Java/Data Type/Date Calculation
Содержание
- 1 Adds a number of days to a date returning a new object.
- 2 Adds a number of hours to a date returning a new object.
- 3 Adds a number of milliseconds to a date returning a new object.
- 4 Adds a number of minutes to a date returning a new object.
- 5 Adds a number of months to a date returning a new object.
- 6 Adds a number of seconds to a date returning a new object.
- 7 Adds a number of weeks to a date returning a new object.
- 8 Adds a number of years to a date returning a new object.
- 9 Calculate Holidays
- 10 Checking date as String formatted by a date format
- 11 Checks if a calendar date is after today and within a number of days in the future
- 12 Checks if a calendar date is today
- 13 Checks if a date is after today and within a number of days in the future
- 14 Checks if the first calendar date is after the second calendar date ignoring time
- 15 Checks if the first calendar date is before the second calendar date ignoring time
- 16 Checks if the first date is after the second date ignoring time
- 17 Checks if the first date is before the second date ignoring time
- 18 Checks if two calendars represent the same day ignoring time
- 19 Checks if two dates are on the same day ignoring time
- 20 Checks the day, month and year are equal
- 21 Checks the hour, minute and second are equal
- 22 Compare two dates
- 23 Get the days difference
- 24 Get the days passed from the specified date up to the date provided in the constructor
- 25 Get the hours difference
- 26 Get the minutes difference
- 27 Get the seconds difference
- 28 Make the date go back of the specified amount of days
- 29 Make the date go forward of the specified amount of minutes
- 30 Returns a Date set just to Noon, to the closest possible millisecond of the day.
- 31 Returns a Date set to the first possible millisecond of the day, just after midnight.
- 32 Returns a Date set to the first possible millisecond of the month, just after midnight.
- 33 Returns a Date set to the last possible millisecond of the day, just before midnight.
- 34 Returns a Date set to the last possible millisecond of the minute.
- 35 Returns a Date set to the last possible millisecond of the month, just before midnight.
- 36 Returns a java.sql.Timestamp equal to the current time
- 37 Returns the maximum of two dates. A null date is treated as being less than any non-null date
- 38 Returns the number of days within the fragment.
- 39 Returns the number of hours within the fragment.
- 40 Returns the number of milliseconds within the fragment.
- 41 Returns the number of minutes within the fragment.
- 42 Returns the number of seconds within the fragment.
- 43 Returns true if endDate is after startDate or if startDate equals endDate.
- 44 Roll the days forward or backward
- 45 Roll the java.sql.Date forward or backward
- 46 Roll the java.util.Date forward or backward
- 47 Roll the java.util.Time forward or backward
- 48 Roll the years forward or backward
- 49 Round this date, leaving the field specified as the most significant field.
- 50 Utilities to working with dates java.util.Date
Adds a number of days to a date returning a new object.
<source lang="java">
import java.util.Calendar; import java.util.Date; /**
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
/**
A suite of utilities surrounding the use of the * {@link java.util.Calendar} and {@link java.util.Date} object.
**
DateUtils contains a lot of common methods considering manipulations * of Dates or Calendars. Some methods require some extra explanation. * The truncate and round methods could be considered the Math.floor(), * Math.ceil() or Math.round versions for dates * This way date-fields will be ignored in bottom-up order. * As a complement to these methods we"ve introduced some fragment-methods. * With these methods the Date-fields will be ignored in top-down order. * Since a date without a year is not a valid date, you have to decide in what * kind of date-field you want your result, for instance milliseconds or days. *
* * * * @author * @author Phil Steitz * @author Robert Scholte * @since 2.0 * @version $Id: DateUtils.java 634096 2008-03-06 00:58:11Z niallp $ */
public class Main {
//-----------------------------------------------------------------------
/**
* Adds a number of days to a date returning a new object.
* The original date object is unchanged.
*
* @param date the date, not null
* @param amount the amount to add, may be negative
* @return the new date object with the amount added
* @throws IllegalArgumentException if the date is null
*/
public static Date addDays(Date date, int amount) {
return add(date, Calendar.DAY_OF_MONTH, amount);
}
//-----------------------------------------------------------------------
/**
* Adds to a date returning a new object.
* The original date object is unchanged.
*
* @param date the date, not null
* @param calendarField the calendar field to add to
* @param amount the amount to add, may be negative
* @return the new date object with the amount added
* @throws IllegalArgumentException if the date is null
*/
private static Date add(Date date, int calendarField, int amount) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.add(calendarField, amount);
return c.getTime();
}
}
</source>
Adds a number of hours to a date returning a new object.
<source lang="java">
import java.util.Calendar; import java.util.Date; /**
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
/**
A suite of utilities surrounding the use of the * {@link java.util.Calendar} and {@link java.util.Date} object.
**
DateUtils contains a lot of common methods considering manipulations * of Dates or Calendars. Some methods require some extra explanation. * The truncate and round methods could be considered the Math.floor(), * Math.ceil() or Math.round versions for dates * This way date-fields will be ignored in bottom-up order. * As a complement to these methods we"ve introduced some fragment-methods. * With these methods the Date-fields will be ignored in top-down order. * Since a date without a year is not a valid date, you have to decide in what * kind of date-field you want your result, for instance milliseconds or days. *
* * * * @author * @author Phil Steitz * @author Robert Scholte * @since 2.0 * @version $Id: DateUtils.java 634096 2008-03-06 00:58:11Z niallp $ */
public class Main {
//-----------------------------------------------------------------------
/**
* Adds a number of hours to a date returning a new object.
* The original date object is unchanged.
*
* @param date the date, not null
* @param amount the amount to add, may be negative
* @return the new date object with the amount added
* @throws IllegalArgumentException if the date is null
*/
public static Date addHours(Date date, int amount) {
return add(date, Calendar.HOUR_OF_DAY, amount);
}
//-----------------------------------------------------------------------
/**
* Adds to a date returning a new object.
* The original date object is unchanged.
*
* @param date the date, not null
* @param calendarField the calendar field to add to
* @param amount the amount to add, may be negative
* @return the new date object with the amount added
* @throws IllegalArgumentException if the date is null
*/
private static Date add(Date date, int calendarField, int amount) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.add(calendarField, amount);
return c.getTime();
}
}
</source>
Adds a number of milliseconds to a date returning a new object.
<source lang="java">
import java.util.Calendar; import java.util.Date; /**
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
/**
A suite of utilities surrounding the use of the * {@link java.util.Calendar} and {@link java.util.Date} object.
**
DateUtils contains a lot of common methods considering manipulations * of Dates or Calendars. Some methods require some extra explanation. * The truncate and round methods could be considered the Math.floor(), * Math.ceil() or Math.round versions for dates * This way date-fields will be ignored in bottom-up order. * As a complement to these methods we"ve introduced some fragment-methods. * With these methods the Date-fields will be ignored in top-down order. * Since a date without a year is not a valid date, you have to decide in what * kind of date-field you want your result, for instance milliseconds or days. *
* * * * @author * @author Phil Steitz * @author Robert Scholte * @since 2.0 * @version $Id: DateUtils.java 634096 2008-03-06 00:58:11Z niallp $ */
public class Main {
//-----------------------------------------------------------------------
/**
* Adds a number of milliseconds to a date returning a new object.
* The original date object is unchanged.
*
* @param date the date, not null
* @param amount the amount to add, may be negative
* @return the new date object with the amount added
* @throws IllegalArgumentException if the date is null
*/
public static Date addMilliseconds(Date date, int amount) {
return add(date, Calendar.MILLISECOND, amount);
}
//-----------------------------------------------------------------------
/**
* Adds to a date returning a new object.
* The original date object is unchanged.
*
* @param date the date, not null
* @param calendarField the calendar field to add to
* @param amount the amount to add, may be negative
* @return the new date object with the amount added
* @throws IllegalArgumentException if the date is null
*/
private static Date add(Date date, int calendarField, int amount) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.add(calendarField, amount);
return c.getTime();
}
}
</source>
Adds a number of minutes to a date returning a new object.
<source lang="java">
import java.util.Calendar; import java.util.Date; /**
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
/**
A suite of utilities surrounding the use of the * {@link java.util.Calendar} and {@link java.util.Date} object.
**
DateUtils contains a lot of common methods considering manipulations * of Dates or Calendars. Some methods require some extra explanation. * The truncate and round methods could be considered the Math.floor(), * Math.ceil() or Math.round versions for dates * This way date-fields will be ignored in bottom-up order. * As a complement to these methods we"ve introduced some fragment-methods. * With these methods the Date-fields will be ignored in top-down order. * Since a date without a year is not a valid date, you have to decide in what * kind of date-field you want your result, for instance milliseconds or days. *
* * * * @author * @author Phil Steitz * @author Robert Scholte * @since 2.0 * @version $Id: DateUtils.java 634096 2008-03-06 00:58:11Z niallp $ */
public class Main {
//-----------------------------------------------------------------------
/**
* Adds a number of minutes to a date returning a new object.
* The original date object is unchanged.
*
* @param date the date, not null
* @param amount the amount to add, may be negative
* @return the new date object with the amount added
* @throws IllegalArgumentException if the date is null
*/
public static Date addMinutes(Date date, int amount) {
return add(date, Calendar.MINUTE, amount);
}
//-----------------------------------------------------------------------
/**
* Adds to a date returning a new object.
* The original date object is unchanged.
*
* @param date the date, not null
* @param calendarField the calendar field to add to
* @param amount the amount to add, may be negative
* @return the new date object with the amount added
* @throws IllegalArgumentException if the date is null
*/
private static Date add(Date date, int calendarField, int amount) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.add(calendarField, amount);
return c.getTime();
}
}
</source>
Adds a number of months to a date returning a new object.
<source lang="java">
import java.math.BigDecimal; import java.math.BigInteger; import java.text.ParseException; import java.text.ParsePosition; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; /**
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
/**
A suite of utilities surrounding the use of the * {@link java.util.Calendar} and {@link java.util.Date} object.
**
DateUtils contains a lot of common methods considering manipulations * of Dates or Calendars. Some methods require some extra explanation. * The truncate and round methods could be considered the Math.floor(), * Math.ceil() or Math.round versions for dates * This way date-fields will be ignored in bottom-up order. * As a complement to these methods we"ve introduced some fragment-methods. * With these methods the Date-fields will be ignored in top-down order. * Since a date without a year is not a valid date, you have to decide in what * kind of date-field you want your result, for instance milliseconds or days. *
* * * * @author * @author Phil Steitz * @author Robert Scholte * @since 2.0 * @version $Id: DateUtils.java 634096 2008-03-06 00:58:11Z niallp $ */
public class Main {
//-----------------------------------------------------------------------
/**
* Adds a number of months to a date returning a new object.
* The original date object is unchanged.
*
* @param date the date, not null
* @param amount the amount to add, may be negative
* @return the new date object with the amount added
* @throws IllegalArgumentException if the date is null
*/
public static Date addMonths(Date date, int amount) {
return add(date, Calendar.MONTH, amount);
}
//-----------------------------------------------------------------------
/**
* Adds to a date returning a new object.
* The original date object is unchanged.
*
* @param date the date, not null
* @param calendarField the calendar field to add to
* @param amount the amount to add, may be negative
* @return the new date object with the amount added
* @throws IllegalArgumentException if the date is null
*/
private static Date add(Date date, int calendarField, int amount) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.add(calendarField, amount);
return c.getTime();
}
}
</source>
Adds a number of seconds to a date returning a new object.
<source lang="java">
import java.util.Calendar; import java.util.Date; /**
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
/**
A suite of utilities surrounding the use of the * {@link java.util.Calendar} and {@link java.util.Date} object.
**
DateUtils contains a lot of common methods considering manipulations * of Dates or Calendars. Some methods require some extra explanation. * The truncate and round methods could be considered the Math.floor(), * Math.ceil() or Math.round versions for dates * This way date-fields will be ignored in bottom-up order. * As a complement to these methods we"ve introduced some fragment-methods. * With these methods the Date-fields will be ignored in top-down order. * Since a date without a year is not a valid date, you have to decide in what * kind of date-field you want your result, for instance milliseconds or days. *
* * * * @author * @author Phil Steitz * @author Robert Scholte * @since 2.0 * @version $Id: DateUtils.java 634096 2008-03-06 00:58:11Z niallp $ */
public class Main {
//-----------------------------------------------------------------------
/**
* Adds a number of seconds to a date returning a new object.
* The original date object is unchanged.
*
* @param date the date, not null
* @param amount the amount to add, may be negative
* @return the new date object with the amount added
* @throws IllegalArgumentException if the date is null
*/
public static Date addSeconds(Date date, int amount) {
return add(date, Calendar.SECOND, amount);
}
//-----------------------------------------------------------------------
/**
* Adds to a date returning a new object.
* The original date object is unchanged.
*
* @param date the date, not null
* @param calendarField the calendar field to add to
* @param amount the amount to add, may be negative
* @return the new date object with the amount added
* @throws IllegalArgumentException if the date is null
*/
private static Date add(Date date, int calendarField, int amount) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.add(calendarField, amount);
return c.getTime();
}
}
</source>
Adds a number of weeks to a date returning a new object.
<source lang="java">
import java.util.Calendar; import java.util.Date; /**
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
/**
A suite of utilities surrounding the use of the * {@link java.util.Calendar} and {@link java.util.Date} object.
**
DateUtils contains a lot of common methods considering manipulations * of Dates or Calendars. Some methods require some extra explanation. * The truncate and round methods could be considered the Math.floor(), * Math.ceil() or Math.round versions for dates * This way date-fields will be ignored in bottom-up order. * As a complement to these methods we"ve introduced some fragment-methods. * With these methods the Date-fields will be ignored in top-down order. * Since a date without a year is not a valid date, you have to decide in what * kind of date-field you want your result, for instance milliseconds or days. *
* * * * @author * @author Phil Steitz * @author Robert Scholte * @since 2.0 * @version $Id: DateUtils.java 634096 2008-03-06 00:58:11Z niallp $ */
public class Main {
//-----------------------------------------------------------------------
/**
* Adds a number of weeks to a date returning a new object.
* The original date object is unchanged.
*
* @param date the date, not null
* @param amount the amount to add, may be negative
* @return the new date object with the amount added
* @throws IllegalArgumentException if the date is null
*/
public static Date addWeeks(Date date, int amount) {
return add(date, Calendar.WEEK_OF_YEAR, amount);
}
//-----------------------------------------------------------------------
/**
* Adds to a date returning a new object.
* The original date object is unchanged.
*
* @param date the date, not null
* @param calendarField the calendar field to add to
* @param amount the amount to add, may be negative
* @return the new date object with the amount added
* @throws IllegalArgumentException if the date is null
*/
private static Date add(Date date, int calendarField, int amount) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.add(calendarField, amount);
return c.getTime();
}
}
</source>
Adds a number of years to a date returning a new object.
<source lang="java">
import java.math.BigDecimal; import java.math.BigInteger; import java.text.ParseException; import java.text.ParsePosition; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; /**
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
/**
A suite of utilities surrounding the use of the * {@link java.util.Calendar} and {@link java.util.Date} object.
**
DateUtils contains a lot of common methods considering manipulations * of Dates or Calendars. Some methods require some extra explanation. * The truncate and round methods could be considered the Math.floor(), * Math.ceil() or Math.round versions for dates * This way date-fields will be ignored in bottom-up order. * As a complement to these methods we"ve introduced some fragment-methods. * With these methods the Date-fields will be ignored in top-down order. * Since a date without a year is not a valid date, you have to decide in what * kind of date-field you want your result, for instance milliseconds or days. *
* * * * @author * @author Phil Steitz * @author Robert Scholte * @since 2.0 * @version $Id: DateUtils.java 634096 2008-03-06 00:58:11Z niallp $ */
public class Main {
//-----------------------------------------------------------------------
/**
* Adds a number of years to a date returning a new object.
* The original date object is unchanged.
*
* @param date the date, not null
* @param amount the amount to add, may be negative
* @return the new date object with the amount added
* @throws IllegalArgumentException if the date is null
*/
public static Date addYears(Date date, int amount) {
return add(date, Calendar.YEAR, amount);
}
//-----------------------------------------------------------------------
/**
* Adds to a date returning a new object.
* The original date object is unchanged.
*
* @param date the date, not null
* @param calendarField the calendar field to add to
* @param amount the amount to add, may be negative
* @return the new date object with the amount added
* @throws IllegalArgumentException if the date is null
*/
private static Date add(Date date, int calendarField, int amount) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.add(calendarField, amount);
return c.getTime();
}
}
</source>
Calculate Holidays
<source lang="java">
//** Copyright Statement *************************************************** //The Salmon Open Framework for Internet Applications (SOFIA) // Copyright (C) 1999 - 2002, Salmon LLC // // This program is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License version 2 // as published by the Free Software Foundation; // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. // // For more information please visit http://www.salmonllc.ru //** End Copyright Statement *************************************************** // // // Author: Gregory N. Mirsky // Updated: John D. Mitchell // Version 1.02 //
import java.util.Calendar;
public class Holidays
{
//********************************* // Miscellaneous other holidays are left as an exercise for the reader. // // public static Date QuebecCivicHoliday (int nYear) // { // // 03 January YYYY // } // // public static Date AshWednesday (int nYear) // { // // 42 days before easter... // } // // public static Date PalmSunday (int nYear) // { // // Sunday before Easter Sunday... // } // // public static Date MaundayThursday (int nYear) // { // // Thursday before Easter... // } // // public static Date RoshHashanah(int nYear) // { // Source: William H. Jefferys, Department of Astronomy, University of // Texas Austin, TX 78712 // // http://quasar.as.utexas.edu // // First, calculate the Golden Number G. This is fundamental to the // calculation of both the date of Easter and the Date of Rosh Hashanah. // It is intimately connected with the Metonic Cycle. For any year Y, the // Golden Number is defined as // // G = Remainder(Y|19) + 1. Don"t forget to add the 1!!! // // The following rules are also due to John Horton Conway, of Princeton // University. In the Gregorian year Y of the Common Era, Rosh Hashanah // normally falls on September N, where // // N + fraction = {[Y/100] - [Y/400] - 2} + // 765433/492480*Remainder(12G|19) + Remainder(Y|4)/4 - (313Y+89081)/98496 // // Here, G is the Golden Number, and * means multiply. However, if certain // conditions are satisfied, Rosh Hashanah is postponed by one or even two // days, as follows: // // ***Postponement rules*** // // 1.If the day calculated above is a Sunday, Wednesday, or Friday, Rosh // Hashanah falls on the next day (Monday, Thursday or Saturday, // respectively). // // 2.If the calculated day is a Monday, and if the fraction is greater // than or equal to 23269/25920, and if Remainder(12G|19) is greater than // 11, Rosh Hashanah falls on the next day, a Tuesday. // // 3.If it is a Tuesday, and if the fraction is greater than or equal to // 1367/2160, and if Remainder(12G|19) is greater than 6, Rosh Hashanah // falls two days later, on Thursday (NOT WEDNESDAY!!). // } // // public static Date Passover(int nYear) // { // Source: William H. Jefferys, Department of Astronomy, University of // Texas Austin, TX 78712 // // http://quasar.as.utexas.edu // // Once you have determined the date of Rosh Hashanah, it is easy to // calculate the date of Passover in the same (Gregorian or Julian) // year. Let M = the number of days from September 6 to Rosh Hashanah. // In the example for 1996, M=September 14-September 6 = 8 days. // // Count M days from March 27. That is the date of Passover. It actually // begins at sundown on the previous evening. In the example for 1996, 8 // days after March 27 is April 4 (there are 31 days in March), so // Passover begins at sundown on April 3. // } // // public static Date DominionDay (int nYear) // { // // 01 July YYYY // } // // public static Date BoxingDay (int nYear) // { // // Day after Christmas, December 26th... // } // //*********************************************
public static java.util.Calendar AbrahamLincolnsBirthday (int nYear){
int nMonth = 1; // February // February 12th java.util.Calendar cal = java.util.Calendar.getInstance(); cal.set(nYear, nMonth, 12); return cal;
} public static java.util.Calendar ChristmasDay (int nYear){
int nMonth = 11; // Decmeber // December 25th java.util.Calendar cal = java.util.Calendar.getInstance(); cal.set(nYear, nMonth, 25); return cal;
}
public static java.util.Calendar ChristmasDayObserved (int nYear)
{
int nX;
int nMonth = 11; // December
java.util.Calendar cal;
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 25);
nX = cal.get(Calendar.DAY_OF_WEEK);
switch(nX)
{
case 0 : {// Sunday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 26);
return cal;
}
case 1 : // Monday
case 2 : // Tuesday
case 3 : // Wednesday
case 4 : // Thrusday
case 5 :{ // Friday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 25);
return cal;
}
default :{
// Saturday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 24);
return cal;
}
}
}
public static java.util.Calendar ColumbusDayObserved (int nYear)
{
// Second Monday in October
int nX;
int nMonth = 9; // October
java.util.Calendar cal;
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 1);
nX = cal.get(Calendar.DAY_OF_WEEK);
switch(nX)
{
case 0 : {// Sunday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 9);
return cal;
}
case 1 : {// Monday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 15);
return cal;
}
case 2 : // Tuesday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 14);
return cal;
}
case 3 : // Wednesday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 13);
return cal;
}
case 4 : // Thrusday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 12);
return cal;
}
case 5 : // Friday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 11);
return cal;
}
default : // Saturday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 10);
return cal;
}
}
}
public static java.util.Calendar EasterMonday (int nYear)
{
int nEasterMonth = 0;
int nEasterDay = 0;
int nMonthMarch = 2; // March
int nMonthApril = 3; // April
java.util.Calendar cEasterSunday = EasterSunday(nYear);
nEasterMonth = cEasterSunday.get(Calendar.MONTH);
nEasterDay = cEasterSunday.get(Calendar.DAY_OF_MONTH);
if (nEasterMonth == nMonthMarch || nEasterDay == 31){
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonthApril, 1);
return cal;
}else{
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.set(nYear, nEasterMonth, ++nEasterDay);
return cal;
}
}
public static java.util.Calendar EasterSunday(int nYear)
{
/* Calculate Easter Sunday
Written by Gregory N. Mirsky
Source: 2nd Edition by Peter Duffett-Smith. It was originally from
Butcher"s Ecclesiastical Calendar, published in 1876. This
algorithm has also been published in the 1922 book General
Astronomy by Spencer Jones; in The Journal of the British
Astronomical Association (Vol.88, page 91, December 1977); and in
Astronomical Algorithms (1991) by Jean Meeus.
This algorithm holds for any year in the Gregorian Calendar, which
(of course) means years including and after 1583.
a=year%19
b=year/100
c=year%100
d=b/4
e=b%4
f=(b+8)/25
g=(b-f+1)/3
h=(19*a+b-d-g+15)%30
i=c/4
k=c%4
l=(32+2*e+2*i-h-k)%7
m=(a+11*h+22*l)/451
Easter Month =(h+l-7*m+114)/31 [3=March, 4=April]
p=(h+l-7*m+114)%31
Easter Date=p+1 (date in Easter Month)
Note: Integer truncation is already factored into the
calculations. Using higher percision variables will cause
inaccurate calculations.
- /
int nA = 0;
int nB = 0;
int nC = 0;
int nD = 0;
int nE = 0;
int nF = 0;
int nG = 0;
int nH = 0;
int nI = 0;
int nK = 0;
int nL = 0;
int nM = 0;
int nP = 0;
int nEasterMonth = 0;
int nEasterDay = 0;
// Calculate Easter
if (nYear < 1900)
{
// if year is in java format put it into standard
// format for the calculation
nYear += 1900;
}
nA = nYear % 19;
nB = nYear / 100;
nC = nYear % 100;
nD = nB / 4;
nE = nB % 4;
nF = (nB + 8) / 25;
nG = (nB - nF + 1) / 3;
nH = (19 * nA + nB - nD - nG + 15) % 30;
nI = nC / 4;
nK = nC % 4;
nL = (32 + 2 * nE + 2 * nI - nH - nK) % 7;
nM= (nA + 11 * nH + 22 * nL) / 451;
// [3=March, 4=April]
nEasterMonth = (nH + nL - 7 * nM + 114) / 31;
--nEasterMonth;
nP = (nH + nL - 7 * nM + 114) % 31;
// Date in Easter Month.
nEasterDay = nP + 1;
// Uncorrect for our earlier correction.
nYear -= 1900;
// Populate the date object...
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.set(nYear, nEasterMonth, nEasterDay);
return cal;
}
public static java.util.Calendar GoodFridayObserved(int nYear)
{
// Get Easter Sunday and subtract two days
int nEasterMonth = 0;
int nEasterDay = 0;
int nGoodFridayMonth = 0;
int nGoodFridayDay = 0;
java.util.Calendar cEasterSunday;
cEasterSunday = EasterSunday(nYear);
nEasterMonth = cEasterSunday.get(Calendar.MONTH);
nEasterDay = cEasterSunday.get(Calendar.DAY_OF_MONTH);
if (nEasterDay <= 3 && nEasterMonth == 3){ // Check if <= April 3rd
switch(nEasterDay){
case 3 :
nGoodFridayMonth = nEasterMonth - 1;
nGoodFridayDay = nEasterDay - 2;
break;
case 2 :
nGoodFridayMonth = nEasterMonth - 1;
nGoodFridayDay = 31;
break;
case 1 :
nGoodFridayMonth = nEasterMonth - 1;
nGoodFridayDay = 31;
break;
default:
nGoodFridayMonth = nEasterMonth;
nGoodFridayDay = nEasterDay - 2;
}
}else{
nGoodFridayMonth = nEasterMonth;
nGoodFridayDay = nEasterDay - 2;
}
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.set(nYear, nGoodFridayMonth, nGoodFridayDay);
return cal;
} public static java.util.Calendar Halloween (int nYear){
int nMonth = 9; // October 31st java.util.Calendar cal = java.util.Calendar.getInstance(); cal.set(nYear, nMonth, 31); return cal;
}
public static java.util.Calendar IndependenceDay (int nYear)
{
int nMonth = 6; // July
// July 4th
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 4);
return cal;
} public static java.util.Calendar IndependenceDayObserved (int nYear){
int nX;
int nMonth = 6; // July
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 4);
nX = cal.get(Calendar.DAY_OF_WEEK);
switch(nX){
case 0 : // Sunday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 5);
return cal;
case 1 : // Monday
case 2 : // Tuesday
case 3 : // Wednesday
case 4 : // Thrusday
case 5 : // Friday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 4);
return cal;
default :
// Saturday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 3);
return cal;
}
} public static java.util.Calendar LaborDayObserved (int nYear){
// The first Monday in September
int nX;
int nMonth = 8; // September
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.set(nYear, 9, 1);
nX = cal.get(Calendar.DAY_OF_WEEK);
switch(nX){
case 0 : // Sunday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 2);
return cal;
case 1 : // Monday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 7);
return cal;
case 2 : // Tuesday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 6);
return cal;
case 3 : // Wednesday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 5);
return cal;
case 4 : // Thrusday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 4);
return cal;
case 5 : // Friday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 3);
return cal;
default : // Saturday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 2);
return cal;
}
} public java.util.Calendar MartinLutherKingObserved (int nYear){
// Third Monday in January
int nX;
int nMonth = 0; // January
java.util.Calendar cal;
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 1);
nX = cal.get(Calendar.DAY_OF_WEEK);
switch(nX) {
case 0 : {// Sunday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 16);
return cal;
}
case 1 : {// Monday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 15);
return cal;
}
case 2 : // Tuesday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 21);
return cal;
}
case 3 : // Wednesday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 20);
return cal;
}
case 4 : // Thrusday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 19);
return cal;
}
case 5 : // Friday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 18);
return cal;
}
default : // Saturday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 17);
return cal;
}
}
} public static java.util.Calendar MemorialDayObserved (int nYear){
// Last Monday in May
int nX;
int nMonth = 4; //May
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 31);
nX = cal.get(Calendar.DAY_OF_WEEK);
switch(nX){
case 0 : // Sunday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 25);
return cal;
case 1 : // Monday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 31);
return cal;
case 2 : // Tuesday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 30);
return cal;
case 3 : // Wednesday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 29);
return cal;
case 4 : // Thrusday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 28);
return cal;
case 5 : // Friday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 27);
return cal;
default : // Saturday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 26);
return cal;
}
} public static java.util.Calendar NewYearsDay (int nYear){
// January 1st int nMonth = 0; // January java.util.Calendar cal = java.util.Calendar.getInstance(); cal.set(nYear, nMonth, 1); return cal;
} public static java.util.Calendar NewYearsDayObserved (int nYear){
int nX;
int nMonth = 0; // January
int nMonthDecember = 11; // December
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 1);
nX = cal.get(Calendar.DAY_OF_WEEK);
if (nYear > 1900)
nYear -= 1900;
switch(nX){
case 0 : // Sunday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 2);
return cal;
case 1 : // Monday
case 2 : // Tuesday
case 3 : // Wednesday
case 4 : // Thrusday
case 5 : // Friday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 1);
return cal;
default :
// Saturday, then observe on friday of previous year
cal = java.util.Calendar.getInstance();
cal.set(--nYear, nMonthDecember, 31);
return cal;
}
} public static java.util.Calendar PresidentsDayObserved (int nYear){
// Third Monday in February
int nX;
int nMonth = 1; // February
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 1);
nX = cal.get(Calendar.DAY_OF_WEEK);
switch(nX){
case 0 : {// Sunday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 16);
return cal;
}
case 1 : {// Monday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 15);
return cal;
}
case 2 : // Tuesday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 21);
return cal;
}
case 3 : // Wednesday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 20);
return cal;
}
case 4 : // Thrusday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 19);
return cal;
}
case 5 : // Friday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 18);
return cal;
}
default : // Saturday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 17);
return cal;
}
}
} public static java.util.Calendar ThanksgivingObserved(int nYear){
int nX;
int nMonth = 10; // November
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 1);
nX = cal.get(Calendar.DAY_OF_WEEK);
switch(nX){
case 0 : {// Sunday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 26);
return cal;
}
case 1 : {// Monday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 25);
return cal;
}
case 2 : // Tuesday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 24);
return cal;
}
case 3 : // Wednesday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 23);
return cal;
}
case 4 : // Thrusday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 22);
return cal;
}
case 5 : // Friday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 28);
return cal;
}
default : // Saturday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 27);
return cal;
}
}
} public static java.util.Calendar USElectionDay (int nYear){
// First Tuesday in November
int nX;
int nMonth = 10; // November
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 1);
nX = cal.get(Calendar.DAY_OF_WEEK);
switch(nX){
case 0 : {// Sunday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 3);
return cal;
}
case 1 : {// Monday
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 2);
return cal;
}
case 2 : // Tuesday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 1);
return cal;
}
case 3 : // Wednesday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 7);
return cal;
}
case 4 : // Thrusday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 6);
return cal;
}
case 5 : // Friday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 5);
return cal;
}
default : // Saturday
{
cal = java.util.Calendar.getInstance();
cal.set(nYear, nMonth, 4);
return cal;
}
}
} public static java.util.Calendar ValentinesDay (int nYear){
int nMonth = 1; // February // February 14th java.util.Calendar cal = java.util.Calendar.getInstance(); cal.set(nYear, nMonth, 14); return cal;
} public static java.util.Calendar VeteransDayObserved (int nYear){
//November 11th int nMonth = 10; // November java.util.Calendar cal = java.util.Calendar.getInstance(); cal.set(nYear, nMonth, 11); return cal;
} public static String getClassInfo()
{
return ("Name: Holidays\r\n" +
"Author: Gregory N. Mirsky\r\n" +
"Updated: John D. Mitchell\r\n" +
"Version 1.02\r\n" +
"Copyright 1997, All rights reserved.");
}
}
</source>
Checking date as String formatted by a date format
<source lang="java">
import java.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; /**
* Utility for checking date as String formatted by a date format. * By default, the date format u * * @see java.text.DateFormat */
public class DateUtils {
public static final SimpleDateFormat DEFAULT_DATE_FORMAT = new SimpleDateFormat("yyyy.MM.dd HH:mm");
private static DateFormat dateFormat = DEFAULT_DATE_FORMAT;
private DateUtils() {
// Instanceless class
}
/**
* Returns the date from the given value parsed by the date format.
*/
public static Date getDate(String yyyyMMdd) throws ParseException {
synchronized (dateFormat) {
return dateFormat.parse(yyyyMMdd);
}
}
/**
* Returns the Date as String formated by the date format.
*/
public static String getStandardDate(Date date) {
synchronized (dateFormat) {
return dateFormat.format(date);
}
}
/**
* Sets the date format.
*/
public static void setDateFormat(DateFormat dateFormat) {
DateUtils.dateFormat = dateFormat;
}
}
</source>
Checks if a calendar date is after today and within a number of days in the future
<source lang="java">
import java.util.Calendar; import java.util.Date; public class DateUtils {
/***
Checks if two dates are on the same day ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either date is null
*/
public static boolean isSameDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isSameDay(cal1, cal2);
}
/**
* Checks if two calendars represent the same day ignoring time.
* @param cal1 the first calendar, not altered, not null
* @param cal2 the second calendar, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either calendar is null
*/
public static boolean isSameDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
return (cal1.get(Calendar.ERA) == cal2.get(Calendar.ERA) &&
cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) &&
cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR));
}
/**
* Checks if a date is today.
* @param date the date, not altered, not null.
* @return true if the date is today.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isToday(Date date) {
return isSameDay(date, Calendar.getInstance().getTime());
}
/**
* Checks if a calendar date is today.
* @param cal the calendar, not altered, not null
* @return true if cal date is today
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isToday(Calendar cal) {
return isSameDay(cal, Calendar.getInstance());
}
/**
* Checks if the first date is before the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is before the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isBeforeDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isBeforeDay(cal1, cal2);
}
/**
* Checks if the first calendar date is before the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is before cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isBeforeDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return true;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return false;
return cal1.get(Calendar.DAY_OF_YEAR) < cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if the first date is after the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is after the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isAfterDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isAfterDay(cal1, cal2);
}
/**
* Checks if the first calendar date is after the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is after cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isAfterDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return false;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return true;
return cal1.get(Calendar.DAY_OF_YEAR) > cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if a date is after today and within a number of days in the future.
* @param date the date to check, not altered, not null.
* @param days the number of days.
* @return true if the date day is after today and within days in the future .
* @throws IllegalArgumentException if the date is null
*/
public static boolean isWithinDaysFuture(Date date, int days) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar cal = Calendar.getInstance();
cal.setTime(date);
return isWithinDaysFuture(cal, days);
}
/**
* Checks if a calendar date is after today and within a number of days in the future.
* @param cal the calendar, not altered, not null
* @param days the number of days.
* @return true if the calendar date day is after today and within days in the future .
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isWithinDaysFuture(Calendar cal, int days) {
if (cal == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar today = Calendar.getInstance();
Calendar future = Calendar.getInstance();
future.add(Calendar.DAY_OF_YEAR, days);
return (isAfterDay(cal, today) && ! isAfterDay(cal, future));
}
/** Returns the given date with the time set to the start of the day. */
public static Date getStart(Date date) {
return clearTime(date);
}
/** Returns the given date with the time values cleared. */
public static Date clearTime(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 0);
c.set(Calendar.MINUTE, 0);
c.set(Calendar.SECOND, 0);
c.set(Calendar.MILLISECOND, 0);
return c.getTime();
}
/** Determines whether or not a date has any time values (hour, minute,
* seconds or millisecondsReturns the given date with the time values cleared. */
/**
* Determines whether or not a date has any time values.
* @param date The date.
* @return true iff the date is not null and any of the date"s hour, minute,
* seconds or millisecond values are greater than zero.
*/
public static boolean hasTime(Date date) {
if (date == null) {
return false;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
if (c.get(Calendar.HOUR_OF_DAY) > 0) {
return true;
}
if (c.get(Calendar.MINUTE) > 0) {
return true;
}
if (c.get(Calendar.SECOND) > 0) {
return true;
}
if (c.get(Calendar.MILLISECOND) > 0) {
return true;
}
return false;
}
/** Returns the given date with time set to the end of the day */
public static Date getEnd(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 23);
c.set(Calendar.MINUTE, 59);
c.set(Calendar.SECOND, 59);
c.set(Calendar.MILLISECOND, 999);
return c.getTime();
}
/**
* Returns the maximum of two dates. A null date is treated as being less
* than any non-null date.
*/
public static Date max(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.after(d2)) ? d1 : d2;
}
/**
* Returns the minimum of two dates. A null date is treated as being greater
* than any non-null date.
*/
public static Date min(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.before(d2)) ? d1 : d2;
}
/** The maximum date possible. */
public static Date MAX_DATE = new Date(Long.MAX_VALUE);
}
</source>
Checks if a calendar date is today
<source lang="java">
import java.util.Calendar; import java.util.Date; public class DateUtils {
/***
Checks if two dates are on the same day ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either date is null
*/
public static boolean isSameDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isSameDay(cal1, cal2);
}
/**
* Checks if two calendars represent the same day ignoring time.
* @param cal1 the first calendar, not altered, not null
* @param cal2 the second calendar, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either calendar is null
*/
public static boolean isSameDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
return (cal1.get(Calendar.ERA) == cal2.get(Calendar.ERA) &&
cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) &&
cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR));
}
/**
* Checks if a date is today.
* @param date the date, not altered, not null.
* @return true if the date is today.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isToday(Date date) {
return isSameDay(date, Calendar.getInstance().getTime());
}
/**
* Checks if a calendar date is today.
* @param cal the calendar, not altered, not null
* @return true if cal date is today
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isToday(Calendar cal) {
return isSameDay(cal, Calendar.getInstance());
}
/**
* Checks if the first date is before the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is before the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isBeforeDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isBeforeDay(cal1, cal2);
}
/**
* Checks if the first calendar date is before the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is before cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isBeforeDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return true;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return false;
return cal1.get(Calendar.DAY_OF_YEAR) < cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if the first date is after the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is after the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isAfterDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isAfterDay(cal1, cal2);
}
/**
* Checks if the first calendar date is after the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is after cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isAfterDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return false;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return true;
return cal1.get(Calendar.DAY_OF_YEAR) > cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if a date is after today and within a number of days in the future.
* @param date the date to check, not altered, not null.
* @param days the number of days.
* @return true if the date day is after today and within days in the future .
* @throws IllegalArgumentException if the date is null
*/
public static boolean isWithinDaysFuture(Date date, int days) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar cal = Calendar.getInstance();
cal.setTime(date);
return isWithinDaysFuture(cal, days);
}
/**
* Checks if a calendar date is after today and within a number of days in the future.
* @param cal the calendar, not altered, not null
* @param days the number of days.
* @return true if the calendar date day is after today and within days in the future .
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isWithinDaysFuture(Calendar cal, int days) {
if (cal == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar today = Calendar.getInstance();
Calendar future = Calendar.getInstance();
future.add(Calendar.DAY_OF_YEAR, days);
return (isAfterDay(cal, today) && ! isAfterDay(cal, future));
}
/** Returns the given date with the time set to the start of the day. */
public static Date getStart(Date date) {
return clearTime(date);
}
/** Returns the given date with the time values cleared. */
public static Date clearTime(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 0);
c.set(Calendar.MINUTE, 0);
c.set(Calendar.SECOND, 0);
c.set(Calendar.MILLISECOND, 0);
return c.getTime();
}
/** Determines whether or not a date has any time values (hour, minute,
* seconds or millisecondsReturns the given date with the time values cleared. */
/**
* Determines whether or not a date has any time values.
* @param date The date.
* @return true iff the date is not null and any of the date"s hour, minute,
* seconds or millisecond values are greater than zero.
*/
public static boolean hasTime(Date date) {
if (date == null) {
return false;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
if (c.get(Calendar.HOUR_OF_DAY) > 0) {
return true;
}
if (c.get(Calendar.MINUTE) > 0) {
return true;
}
if (c.get(Calendar.SECOND) > 0) {
return true;
}
if (c.get(Calendar.MILLISECOND) > 0) {
return true;
}
return false;
}
/** Returns the given date with time set to the end of the day */
public static Date getEnd(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 23);
c.set(Calendar.MINUTE, 59);
c.set(Calendar.SECOND, 59);
c.set(Calendar.MILLISECOND, 999);
return c.getTime();
}
/**
* Returns the maximum of two dates. A null date is treated as being less
* than any non-null date.
*/
public static Date max(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.after(d2)) ? d1 : d2;
}
/**
* Returns the minimum of two dates. A null date is treated as being greater
* than any non-null date.
*/
public static Date min(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.before(d2)) ? d1 : d2;
}
/** The maximum date possible. */
public static Date MAX_DATE = new Date(Long.MAX_VALUE);
}
</source>
Checks if a date is after today and within a number of days in the future
<source lang="java">
import java.util.Calendar; import java.util.Date; public class DateUtils {
/***
Checks if two dates are on the same day ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either date is null
*/
public static boolean isSameDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isSameDay(cal1, cal2);
}
/**
* Checks if two calendars represent the same day ignoring time.
* @param cal1 the first calendar, not altered, not null
* @param cal2 the second calendar, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either calendar is null
*/
public static boolean isSameDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
return (cal1.get(Calendar.ERA) == cal2.get(Calendar.ERA) &&
cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) &&
cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR));
}
/**
* Checks if a date is today.
* @param date the date, not altered, not null.
* @return true if the date is today.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isToday(Date date) {
return isSameDay(date, Calendar.getInstance().getTime());
}
/**
* Checks if a calendar date is today.
* @param cal the calendar, not altered, not null
* @return true if cal date is today
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isToday(Calendar cal) {
return isSameDay(cal, Calendar.getInstance());
}
/**
* Checks if the first date is before the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is before the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isBeforeDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isBeforeDay(cal1, cal2);
}
/**
* Checks if the first calendar date is before the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is before cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isBeforeDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return true;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return false;
return cal1.get(Calendar.DAY_OF_YEAR) < cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if the first date is after the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is after the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isAfterDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isAfterDay(cal1, cal2);
}
/**
* Checks if the first calendar date is after the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is after cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isAfterDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return false;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return true;
return cal1.get(Calendar.DAY_OF_YEAR) > cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if a date is after today and within a number of days in the future.
* @param date the date to check, not altered, not null.
* @param days the number of days.
* @return true if the date day is after today and within days in the future .
* @throws IllegalArgumentException if the date is null
*/
public static boolean isWithinDaysFuture(Date date, int days) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar cal = Calendar.getInstance();
cal.setTime(date);
return isWithinDaysFuture(cal, days);
}
/**
* Checks if a calendar date is after today and within a number of days in the future.
* @param cal the calendar, not altered, not null
* @param days the number of days.
* @return true if the calendar date day is after today and within days in the future .
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isWithinDaysFuture(Calendar cal, int days) {
if (cal == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar today = Calendar.getInstance();
Calendar future = Calendar.getInstance();
future.add(Calendar.DAY_OF_YEAR, days);
return (isAfterDay(cal, today) && ! isAfterDay(cal, future));
}
/** Returns the given date with the time set to the start of the day. */
public static Date getStart(Date date) {
return clearTime(date);
}
/** Returns the given date with the time values cleared. */
public static Date clearTime(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 0);
c.set(Calendar.MINUTE, 0);
c.set(Calendar.SECOND, 0);
c.set(Calendar.MILLISECOND, 0);
return c.getTime();
}
/** Determines whether or not a date has any time values (hour, minute,
* seconds or millisecondsReturns the given date with the time values cleared. */
/**
* Determines whether or not a date has any time values.
* @param date The date.
* @return true iff the date is not null and any of the date"s hour, minute,
* seconds or millisecond values are greater than zero.
*/
public static boolean hasTime(Date date) {
if (date == null) {
return false;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
if (c.get(Calendar.HOUR_OF_DAY) > 0) {
return true;
}
if (c.get(Calendar.MINUTE) > 0) {
return true;
}
if (c.get(Calendar.SECOND) > 0) {
return true;
}
if (c.get(Calendar.MILLISECOND) > 0) {
return true;
}
return false;
}
/** Returns the given date with time set to the end of the day */
public static Date getEnd(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 23);
c.set(Calendar.MINUTE, 59);
c.set(Calendar.SECOND, 59);
c.set(Calendar.MILLISECOND, 999);
return c.getTime();
}
/**
* Returns the maximum of two dates. A null date is treated as being less
* than any non-null date.
*/
public static Date max(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.after(d2)) ? d1 : d2;
}
/**
* Returns the minimum of two dates. A null date is treated as being greater
* than any non-null date.
*/
public static Date min(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.before(d2)) ? d1 : d2;
}
/** The maximum date possible. */
public static Date MAX_DATE = new Date(Long.MAX_VALUE);
}
</source>
Checks if the first calendar date is after the second calendar date ignoring time
<source lang="java">
import java.util.Calendar; import java.util.Date; public class DateUtils {
/***
Checks if two dates are on the same day ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either date is null
*/
public static boolean isSameDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isSameDay(cal1, cal2);
}
/**
* Checks if two calendars represent the same day ignoring time.
* @param cal1 the first calendar, not altered, not null
* @param cal2 the second calendar, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either calendar is null
*/
public static boolean isSameDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
return (cal1.get(Calendar.ERA) == cal2.get(Calendar.ERA) &&
cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) &&
cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR));
}
/**
* Checks if a date is today.
* @param date the date, not altered, not null.
* @return true if the date is today.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isToday(Date date) {
return isSameDay(date, Calendar.getInstance().getTime());
}
/**
* Checks if a calendar date is today.
* @param cal the calendar, not altered, not null
* @return true if cal date is today
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isToday(Calendar cal) {
return isSameDay(cal, Calendar.getInstance());
}
/**
* Checks if the first date is before the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is before the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isBeforeDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isBeforeDay(cal1, cal2);
}
/**
* Checks if the first calendar date is before the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is before cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isBeforeDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return true;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return false;
return cal1.get(Calendar.DAY_OF_YEAR) < cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if the first date is after the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is after the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isAfterDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isAfterDay(cal1, cal2);
}
/**
* Checks if the first calendar date is after the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is after cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isAfterDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return false;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return true;
return cal1.get(Calendar.DAY_OF_YEAR) > cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if a date is after today and within a number of days in the future.
* @param date the date to check, not altered, not null.
* @param days the number of days.
* @return true if the date day is after today and within days in the future .
* @throws IllegalArgumentException if the date is null
*/
public static boolean isWithinDaysFuture(Date date, int days) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar cal = Calendar.getInstance();
cal.setTime(date);
return isWithinDaysFuture(cal, days);
}
/**
* Checks if a calendar date is after today and within a number of days in the future.
* @param cal the calendar, not altered, not null
* @param days the number of days.
* @return true if the calendar date day is after today and within days in the future .
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isWithinDaysFuture(Calendar cal, int days) {
if (cal == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar today = Calendar.getInstance();
Calendar future = Calendar.getInstance();
future.add(Calendar.DAY_OF_YEAR, days);
return (isAfterDay(cal, today) && ! isAfterDay(cal, future));
}
/** Returns the given date with the time set to the start of the day. */
public static Date getStart(Date date) {
return clearTime(date);
}
/** Returns the given date with the time values cleared. */
public static Date clearTime(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 0);
c.set(Calendar.MINUTE, 0);
c.set(Calendar.SECOND, 0);
c.set(Calendar.MILLISECOND, 0);
return c.getTime();
}
/** Determines whether or not a date has any time values (hour, minute,
* seconds or millisecondsReturns the given date with the time values cleared. */
/**
* Determines whether or not a date has any time values.
* @param date The date.
* @return true iff the date is not null and any of the date"s hour, minute,
* seconds or millisecond values are greater than zero.
*/
public static boolean hasTime(Date date) {
if (date == null) {
return false;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
if (c.get(Calendar.HOUR_OF_DAY) > 0) {
return true;
}
if (c.get(Calendar.MINUTE) > 0) {
return true;
}
if (c.get(Calendar.SECOND) > 0) {
return true;
}
if (c.get(Calendar.MILLISECOND) > 0) {
return true;
}
return false;
}
/** Returns the given date with time set to the end of the day */
public static Date getEnd(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 23);
c.set(Calendar.MINUTE, 59);
c.set(Calendar.SECOND, 59);
c.set(Calendar.MILLISECOND, 999);
return c.getTime();
}
/**
* Returns the maximum of two dates. A null date is treated as being less
* than any non-null date.
*/
public static Date max(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.after(d2)) ? d1 : d2;
}
/**
* Returns the minimum of two dates. A null date is treated as being greater
* than any non-null date.
*/
public static Date min(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.before(d2)) ? d1 : d2;
}
/** The maximum date possible. */
public static Date MAX_DATE = new Date(Long.MAX_VALUE);
}
</source>
Checks if the first calendar date is before the second calendar date ignoring time
<source lang="java">
import java.util.Calendar; import java.util.Date; public class DateUtils {
/***
Checks if two dates are on the same day ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either date is null
*/
public static boolean isSameDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isSameDay(cal1, cal2);
}
/**
* Checks if two calendars represent the same day ignoring time.
* @param cal1 the first calendar, not altered, not null
* @param cal2 the second calendar, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either calendar is null
*/
public static boolean isSameDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
return (cal1.get(Calendar.ERA) == cal2.get(Calendar.ERA) &&
cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) &&
cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR));
}
/**
* Checks if a date is today.
* @param date the date, not altered, not null.
* @return true if the date is today.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isToday(Date date) {
return isSameDay(date, Calendar.getInstance().getTime());
}
/**
* Checks if a calendar date is today.
* @param cal the calendar, not altered, not null
* @return true if cal date is today
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isToday(Calendar cal) {
return isSameDay(cal, Calendar.getInstance());
}
/**
* Checks if the first date is before the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is before the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isBeforeDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isBeforeDay(cal1, cal2);
}
/**
* Checks if the first calendar date is before the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is before cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isBeforeDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return true;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return false;
return cal1.get(Calendar.DAY_OF_YEAR) < cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if the first date is after the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is after the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isAfterDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isAfterDay(cal1, cal2);
}
/**
* Checks if the first calendar date is after the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is after cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isAfterDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return false;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return true;
return cal1.get(Calendar.DAY_OF_YEAR) > cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if a date is after today and within a number of days in the future.
* @param date the date to check, not altered, not null.
* @param days the number of days.
* @return true if the date day is after today and within days in the future .
* @throws IllegalArgumentException if the date is null
*/
public static boolean isWithinDaysFuture(Date date, int days) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar cal = Calendar.getInstance();
cal.setTime(date);
return isWithinDaysFuture(cal, days);
}
/**
* Checks if a calendar date is after today and within a number of days in the future.
* @param cal the calendar, not altered, not null
* @param days the number of days.
* @return true if the calendar date day is after today and within days in the future .
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isWithinDaysFuture(Calendar cal, int days) {
if (cal == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar today = Calendar.getInstance();
Calendar future = Calendar.getInstance();
future.add(Calendar.DAY_OF_YEAR, days);
return (isAfterDay(cal, today) && ! isAfterDay(cal, future));
}
/** Returns the given date with the time set to the start of the day. */
public static Date getStart(Date date) {
return clearTime(date);
}
/** Returns the given date with the time values cleared. */
public static Date clearTime(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 0);
c.set(Calendar.MINUTE, 0);
c.set(Calendar.SECOND, 0);
c.set(Calendar.MILLISECOND, 0);
return c.getTime();
}
/** Determines whether or not a date has any time values (hour, minute,
* seconds or millisecondsReturns the given date with the time values cleared. */
/**
* Determines whether or not a date has any time values.
* @param date The date.
* @return true iff the date is not null and any of the date"s hour, minute,
* seconds or millisecond values are greater than zero.
*/
public static boolean hasTime(Date date) {
if (date == null) {
return false;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
if (c.get(Calendar.HOUR_OF_DAY) > 0) {
return true;
}
if (c.get(Calendar.MINUTE) > 0) {
return true;
}
if (c.get(Calendar.SECOND) > 0) {
return true;
}
if (c.get(Calendar.MILLISECOND) > 0) {
return true;
}
return false;
}
/** Returns the given date with time set to the end of the day */
public static Date getEnd(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 23);
c.set(Calendar.MINUTE, 59);
c.set(Calendar.SECOND, 59);
c.set(Calendar.MILLISECOND, 999);
return c.getTime();
}
/**
* Returns the maximum of two dates. A null date is treated as being less
* than any non-null date.
*/
public static Date max(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.after(d2)) ? d1 : d2;
}
/**
* Returns the minimum of two dates. A null date is treated as being greater
* than any non-null date.
*/
public static Date min(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.before(d2)) ? d1 : d2;
}
/** The maximum date possible. */
public static Date MAX_DATE = new Date(Long.MAX_VALUE);
}
</source>
Checks if the first date is after the second date ignoring time
<source lang="java">
import java.util.Calendar; import java.util.Date; public class DateUtils {
/***
Checks if two dates are on the same day ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either date is null
*/
public static boolean isSameDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isSameDay(cal1, cal2);
}
/**
* Checks if two calendars represent the same day ignoring time.
* @param cal1 the first calendar, not altered, not null
* @param cal2 the second calendar, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either calendar is null
*/
public static boolean isSameDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
return (cal1.get(Calendar.ERA) == cal2.get(Calendar.ERA) &&
cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) &&
cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR));
}
/**
* Checks if a date is today.
* @param date the date, not altered, not null.
* @return true if the date is today.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isToday(Date date) {
return isSameDay(date, Calendar.getInstance().getTime());
}
/**
* Checks if a calendar date is today.
* @param cal the calendar, not altered, not null
* @return true if cal date is today
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isToday(Calendar cal) {
return isSameDay(cal, Calendar.getInstance());
}
/**
* Checks if the first date is before the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is before the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isBeforeDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isBeforeDay(cal1, cal2);
}
/**
* Checks if the first calendar date is before the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is before cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isBeforeDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return true;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return false;
return cal1.get(Calendar.DAY_OF_YEAR) < cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if the first date is after the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is after the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isAfterDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isAfterDay(cal1, cal2);
}
/**
* Checks if the first calendar date is after the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is after cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isAfterDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return false;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return true;
return cal1.get(Calendar.DAY_OF_YEAR) > cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if a date is after today and within a number of days in the future.
* @param date the date to check, not altered, not null.
* @param days the number of days.
* @return true if the date day is after today and within days in the future .
* @throws IllegalArgumentException if the date is null
*/
public static boolean isWithinDaysFuture(Date date, int days) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar cal = Calendar.getInstance();
cal.setTime(date);
return isWithinDaysFuture(cal, days);
}
/**
* Checks if a calendar date is after today and within a number of days in the future.
* @param cal the calendar, not altered, not null
* @param days the number of days.
* @return true if the calendar date day is after today and within days in the future .
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isWithinDaysFuture(Calendar cal, int days) {
if (cal == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar today = Calendar.getInstance();
Calendar future = Calendar.getInstance();
future.add(Calendar.DAY_OF_YEAR, days);
return (isAfterDay(cal, today) && ! isAfterDay(cal, future));
}
/** Returns the given date with the time set to the start of the day. */
public static Date getStart(Date date) {
return clearTime(date);
}
/** Returns the given date with the time values cleared. */
public static Date clearTime(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 0);
c.set(Calendar.MINUTE, 0);
c.set(Calendar.SECOND, 0);
c.set(Calendar.MILLISECOND, 0);
return c.getTime();
}
/** Determines whether or not a date has any time values (hour, minute,
* seconds or millisecondsReturns the given date with the time values cleared. */
/**
* Determines whether or not a date has any time values.
* @param date The date.
* @return true iff the date is not null and any of the date"s hour, minute,
* seconds or millisecond values are greater than zero.
*/
public static boolean hasTime(Date date) {
if (date == null) {
return false;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
if (c.get(Calendar.HOUR_OF_DAY) > 0) {
return true;
}
if (c.get(Calendar.MINUTE) > 0) {
return true;
}
if (c.get(Calendar.SECOND) > 0) {
return true;
}
if (c.get(Calendar.MILLISECOND) > 0) {
return true;
}
return false;
}
/** Returns the given date with time set to the end of the day */
public static Date getEnd(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 23);
c.set(Calendar.MINUTE, 59);
c.set(Calendar.SECOND, 59);
c.set(Calendar.MILLISECOND, 999);
return c.getTime();
}
/**
* Returns the maximum of two dates. A null date is treated as being less
* than any non-null date.
*/
public static Date max(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.after(d2)) ? d1 : d2;
}
/**
* Returns the minimum of two dates. A null date is treated as being greater
* than any non-null date.
*/
public static Date min(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.before(d2)) ? d1 : d2;
}
/** The maximum date possible. */
public static Date MAX_DATE = new Date(Long.MAX_VALUE);
}
</source>
Checks if the first date is before the second date ignoring time
<source lang="java">
import java.util.Calendar; import java.util.Date; public class DateUtils {
/***
Checks if two dates are on the same day ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either date is null
*/
public static boolean isSameDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isSameDay(cal1, cal2);
}
/**
* Checks if two calendars represent the same day ignoring time.
* @param cal1 the first calendar, not altered, not null
* @param cal2 the second calendar, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either calendar is null
*/
public static boolean isSameDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
return (cal1.get(Calendar.ERA) == cal2.get(Calendar.ERA) &&
cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) &&
cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR));
}
/**
* Checks if a date is today.
* @param date the date, not altered, not null.
* @return true if the date is today.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isToday(Date date) {
return isSameDay(date, Calendar.getInstance().getTime());
}
/**
* Checks if a calendar date is today.
* @param cal the calendar, not altered, not null
* @return true if cal date is today
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isToday(Calendar cal) {
return isSameDay(cal, Calendar.getInstance());
}
/**
* Checks if the first date is before the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is before the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isBeforeDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isBeforeDay(cal1, cal2);
}
/**
* Checks if the first calendar date is before the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is before cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isBeforeDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return true;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return false;
return cal1.get(Calendar.DAY_OF_YEAR) < cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if the first date is after the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is after the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isAfterDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isAfterDay(cal1, cal2);
}
/**
* Checks if the first calendar date is after the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is after cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isAfterDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return false;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return true;
return cal1.get(Calendar.DAY_OF_YEAR) > cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if a date is after today and within a number of days in the future.
* @param date the date to check, not altered, not null.
* @param days the number of days.
* @return true if the date day is after today and within days in the future .
* @throws IllegalArgumentException if the date is null
*/
public static boolean isWithinDaysFuture(Date date, int days) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar cal = Calendar.getInstance();
cal.setTime(date);
return isWithinDaysFuture(cal, days);
}
/**
* Checks if a calendar date is after today and within a number of days in the future.
* @param cal the calendar, not altered, not null
* @param days the number of days.
* @return true if the calendar date day is after today and within days in the future .
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isWithinDaysFuture(Calendar cal, int days) {
if (cal == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar today = Calendar.getInstance();
Calendar future = Calendar.getInstance();
future.add(Calendar.DAY_OF_YEAR, days);
return (isAfterDay(cal, today) && ! isAfterDay(cal, future));
}
/** Returns the given date with the time set to the start of the day. */
public static Date getStart(Date date) {
return clearTime(date);
}
/** Returns the given date with the time values cleared. */
public static Date clearTime(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 0);
c.set(Calendar.MINUTE, 0);
c.set(Calendar.SECOND, 0);
c.set(Calendar.MILLISECOND, 0);
return c.getTime();
}
/** Determines whether or not a date has any time values (hour, minute,
* seconds or millisecondsReturns the given date with the time values cleared. */
/**
* Determines whether or not a date has any time values.
* @param date The date.
* @return true iff the date is not null and any of the date"s hour, minute,
* seconds or millisecond values are greater than zero.
*/
public static boolean hasTime(Date date) {
if (date == null) {
return false;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
if (c.get(Calendar.HOUR_OF_DAY) > 0) {
return true;
}
if (c.get(Calendar.MINUTE) > 0) {
return true;
}
if (c.get(Calendar.SECOND) > 0) {
return true;
}
if (c.get(Calendar.MILLISECOND) > 0) {
return true;
}
return false;
}
/** Returns the given date with time set to the end of the day */
public static Date getEnd(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 23);
c.set(Calendar.MINUTE, 59);
c.set(Calendar.SECOND, 59);
c.set(Calendar.MILLISECOND, 999);
return c.getTime();
}
/**
* Returns the maximum of two dates. A null date is treated as being less
* than any non-null date.
*/
public static Date max(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.after(d2)) ? d1 : d2;
}
/**
* Returns the minimum of two dates. A null date is treated as being greater
* than any non-null date.
*/
public static Date min(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.before(d2)) ? d1 : d2;
}
/** The maximum date possible. */
public static Date MAX_DATE = new Date(Long.MAX_VALUE);
}
</source>
Checks if two calendars represent the same day ignoring time
<source lang="java">
import java.util.Calendar; import java.util.Date; public class DateUtils {
/***
Checks if two dates are on the same day ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either date is null
*/
public static boolean isSameDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isSameDay(cal1, cal2);
}
/**
* Checks if two calendars represent the same day ignoring time.
* @param cal1 the first calendar, not altered, not null
* @param cal2 the second calendar, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either calendar is null
*/
public static boolean isSameDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
return (cal1.get(Calendar.ERA) == cal2.get(Calendar.ERA) &&
cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) &&
cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR));
}
/**
* Checks if a date is today.
* @param date the date, not altered, not null.
* @return true if the date is today.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isToday(Date date) {
return isSameDay(date, Calendar.getInstance().getTime());
}
/**
* Checks if a calendar date is today.
* @param cal the calendar, not altered, not null
* @return true if cal date is today
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isToday(Calendar cal) {
return isSameDay(cal, Calendar.getInstance());
}
/**
* Checks if the first date is before the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is before the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isBeforeDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isBeforeDay(cal1, cal2);
}
/**
* Checks if the first calendar date is before the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is before cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isBeforeDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return true;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return false;
return cal1.get(Calendar.DAY_OF_YEAR) < cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if the first date is after the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is after the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isAfterDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isAfterDay(cal1, cal2);
}
/**
* Checks if the first calendar date is after the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is after cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isAfterDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return false;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return true;
return cal1.get(Calendar.DAY_OF_YEAR) > cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if a date is after today and within a number of days in the future.
* @param date the date to check, not altered, not null.
* @param days the number of days.
* @return true if the date day is after today and within days in the future .
* @throws IllegalArgumentException if the date is null
*/
public static boolean isWithinDaysFuture(Date date, int days) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar cal = Calendar.getInstance();
cal.setTime(date);
return isWithinDaysFuture(cal, days);
}
/**
* Checks if a calendar date is after today and within a number of days in the future.
* @param cal the calendar, not altered, not null
* @param days the number of days.
* @return true if the calendar date day is after today and within days in the future .
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isWithinDaysFuture(Calendar cal, int days) {
if (cal == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar today = Calendar.getInstance();
Calendar future = Calendar.getInstance();
future.add(Calendar.DAY_OF_YEAR, days);
return (isAfterDay(cal, today) && ! isAfterDay(cal, future));
}
/** Returns the given date with the time set to the start of the day. */
public static Date getStart(Date date) {
return clearTime(date);
}
/** Returns the given date with the time values cleared. */
public static Date clearTime(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 0);
c.set(Calendar.MINUTE, 0);
c.set(Calendar.SECOND, 0);
c.set(Calendar.MILLISECOND, 0);
return c.getTime();
}
/** Determines whether or not a date has any time values (hour, minute,
* seconds or millisecondsReturns the given date with the time values cleared. */
/**
* Determines whether or not a date has any time values.
* @param date The date.
* @return true iff the date is not null and any of the date"s hour, minute,
* seconds or millisecond values are greater than zero.
*/
public static boolean hasTime(Date date) {
if (date == null) {
return false;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
if (c.get(Calendar.HOUR_OF_DAY) > 0) {
return true;
}
if (c.get(Calendar.MINUTE) > 0) {
return true;
}
if (c.get(Calendar.SECOND) > 0) {
return true;
}
if (c.get(Calendar.MILLISECOND) > 0) {
return true;
}
return false;
}
/** Returns the given date with time set to the end of the day */
public static Date getEnd(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 23);
c.set(Calendar.MINUTE, 59);
c.set(Calendar.SECOND, 59);
c.set(Calendar.MILLISECOND, 999);
return c.getTime();
}
/**
* Returns the maximum of two dates. A null date is treated as being less
* than any non-null date.
*/
public static Date max(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.after(d2)) ? d1 : d2;
}
/**
* Returns the minimum of two dates. A null date is treated as being greater
* than any non-null date.
*/
public static Date min(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.before(d2)) ? d1 : d2;
}
/** The maximum date possible. */
public static Date MAX_DATE = new Date(Long.MAX_VALUE);
}
</source>
Checks if two dates are on the same day ignoring time
<source lang="java">
import java.util.Calendar; import java.util.Date; /*
* The contents of this file are subject to the terms of the Common Development * and Distribution License (the License). You may not use this file except in * compliance with the License. * * You can get a copy of the License at http://www.thinkingrock.ru.au/cddl.html * or http://www.thinkingrock.ru.au/cddl.txt. * * When distributing Covered Code, include this CDDL Header Notice in each file * and include the License file at http://www.thinkingrock.ru.au/cddl.txt. * If applicable, add the following below the CDDL Header, with the fields * enclosed by brackets [] replaced by your own identifying information: * "Portions Copyright [year] [name of copyright owner]" * * The Original Software is ThinkingRock. The Initial Developer of the Original * Software is Avente Pty Ltd, Australia. * * Portions Copyright 2006-2007 Avente Pty Ltd. All Rights Reserved. */
public class Util {
/***
Checks if two dates are on the same day ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either date is null
*/
public static boolean isSameDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isSameDay(cal1, cal2);
}
}
</source>
Checks the day, month and year are equal
<source lang="java">
/*
* Copyright Javelin Software, All rights reserved. */
import java.util.*; import java.text.*; /**
* The DateUtil is used as a Utility Class for Dates. * * @author Robin Sharp */
public class DateUtil {
public final static long SECOND_MILLIS = 1000;
public final static long MINUTE_MILLIS = SECOND_MILLIS*60;
public final static long HOUR_MILLIS = MINUTE_MILLIS*60;
public final static long DAY_MILLIS = HOUR_MILLIS*24;
public final static long YEAR_MILLIS = DAY_MILLIS*365;
public static DateFormat OUT_DATE_FORMAT = new SimpleDateFormat("dd/MM/yyyy");
public static DateFormat OUT_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat OUT_DATETIME_FORMAT = new SimpleDateFormat("d/M/yyyy H:mm:ss");
public static DateFormat OUT_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat IN_DATE_FORMAT = new SimpleDateFormat("d/M/yy");
public static DateFormat IN_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat IN_DATETIME_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss");
public static DateFormat IN_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat DATE_TIME_FORMAT= new SimpleDateFormat( "yyyyMMddkkmmss" );
public static Calendar calendar = new GregorianCalendar();
static
{
IN_DATE_FORMAT.setLenient(false);
IN_TIME_FORMAT.setLenient(false);
IN_DATETIME_FORMAT.setLenient(false);
}
/**
* Create a new DateTime. To the last second. This will not create any
* extra-millis-seconds, which may cause bugs when writing to stores such as
* databases that round milli-seconds up and down.
*/
public static java.util.Date newDateTime()
{
return new java.util.Date( (System.currentTimeMillis()/SECOND_MILLIS)*SECOND_MILLIS);
}
/**
* Create a new Date. To the last day.
*/
public static java.sql.Date newDate()
{
return new java.sql.Date( (System.currentTimeMillis()/DAY_MILLIS)*DAY_MILLIS);
}
/**
* Create a new Time, with no date component.
*/
public static java.sql.Time newTime()
{
return new java.sql.Time( System.currentTimeMillis()%DAY_MILLIS);
}
/**
* Create a new Timestamp.
*/
public static java.sql.Timestamp newTimestamp()
{
return new java.sql.Timestamp( System.currentTimeMillis() );
}
/**
* Get the seconds difference
*/
public static int secondsDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/SECOND_MILLIS) - (earlierDate.getTime()/SECOND_MILLIS));
}
/**
* Get the minutes difference
*/
public static int minutesDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/MINUTE_MILLIS) - (earlierDate.getTime()/MINUTE_MILLIS));
}
/**
* Get the hours difference
*/
public static int hoursDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/HOUR_MILLIS) - (earlierDate.getTime()/HOUR_MILLIS));
}
/**
* Get the days difference
*/
public static int daysDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/DAY_MILLIS) - (earlierDate.getTime()/DAY_MILLIS));
}
/**
* Roll the java.util.Time forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Time rollTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Time(gc.getTime().getTime());
}
/**
* Roll the java.util.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.util.Date rollDateTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.util.Date(gc.getTime().getTime());
}
/**
* Roll the java.sql.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Date rollDate( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Date(gc.getTime().getTime());
}
/**
* Roll the years forward or backward.
* @param startDate - The start date
* @param years - Negative to rollbackwards.
*/
public static java.sql.Date rollYears( java.util.Date startDate, int years )
{
return rollDate( startDate, Calendar.YEAR, years );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param months - Negative to rollbackwards.
*/
public static java.sql.Date rollMonths( java.util.Date startDate, int months )
{
return rollDate( startDate, Calendar.MONTH, months );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param days - Negative to rollbackwards.
*/
public static java.sql.Date rollDays( java.util.Date startDate, int days )
{
return rollDate( startDate, Calendar.DATE, days );
}
/**
* Checks the day, month and year are equal.
*/
public static boolean dateEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear();
}
/**
* Checks the hour, minute and second are equal.
*/
public static boolean timeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Checks the second, hour, month, day, month and year are equal.
*/
public static boolean dateTimeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear() &&
d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Convert an Object of type Classs to an Object.
*/
public static Object toObject( Class clazz, Object value ) throws ParseException
{
if( value == null ) return null;
if( clazz == null ) return value;
if( java.sql.Date.class.isAssignableFrom( clazz ) ) return toDate( value );
if( java.sql.Time.class.isAssignableFrom( clazz ) ) return toTime( value );
if( java.sql.Timestamp.class.isAssignableFrom( clazz ) ) return toTimestamp( value );
if( java.util.Date.class.isAssignableFrom( clazz ) ) return toDateTime( value );
return value;
}
/**
* Convert an Object to a DateTime, without an Exception
*/
public static java.util.Date getDateTime( Object value )
{
try
{
return toDateTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a DateTime.
*/
public static java.util.Date toDateTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.util.Date ) return (java.util.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return IN_DATETIME_FORMAT.parse( (String)value );
}
return IN_DATETIME_FORMAT.parse( value.toString() );
}
/**
* Convert an Object to a Date, without an Exception
*/
public static java.sql.Date getDate( Object value )
{
try
{
return toDate( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Date.
*/
public static java.sql.Date toDate( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Date ) return (java.sql.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Date( IN_DATE_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Date( IN_DATE_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Time, without an Exception
*/
public static java.sql.Time getTime( Object value )
{
try
{
return toTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Time.
*/
public static java.sql.Time toTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Time ) return (java.sql.Time)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Time( IN_TIME_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Time( IN_TIME_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Timestamp, without an Exception
*/
public static java.sql.Timestamp getTimestamp( Object value )
{
try
{
return toTimestamp( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Timestamp.
*/
public static java.sql.Timestamp toTimestamp( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Timestamp ) return (java.sql.Timestamp)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Tells you if the date part of a datetime is in a certain time range.
*/
public static boolean isTimeInRange( java.sql.Time start, java.sql.Time end, java.util.Date d )
{
d=new java.sql.Time(d.getHours(),d.getMinutes(),d.getSeconds());
if (start==null || end==null)
{
return false;
}
if (start.before(end)&&(!(d.after(start)&&d.before(end))))
{
return false;
}
if (end.before(start)&&(!(d.after(end)||d.before(start))))
{
return false;
}
return true;
}
public static int getYear( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.YEAR );
}
public static int getMonth( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MONTH );
}
public static int getDate( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.DATE );
}
public static int getHour( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.HOUR );
}
public static int getMinute( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MINUTE );
}
public static int getSeconds( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.SECOND );
}
public static int getMillisecond( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MILLISECOND );
}
/**
* Convert an Object to a String using Dates
*/
public static String toString( Object date )
{
if( date == null ) return null;
if( java.sql.Timestamp.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIMESTAMP_FORMAT.format( date );
}
if( java.sql.Time.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIME_FORMAT.format( date );
}
if( java.sql.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATE_FORMAT.format( date );
}
if( java.util.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATETIME_FORMAT.format( date );
}
throw new IllegalArgumentException( "Unsupported type " + date.getClass() );
}
}
</source>
Checks the hour, minute and second are equal
<source lang="java">
/*
* Copyright Javelin Software, All rights reserved. */
import java.util.*; import java.text.*; /**
* The DateUtil is used as a Utility Class for Dates. * * @author Robin Sharp */
public class DateUtil {
public final static long SECOND_MILLIS = 1000;
public final static long MINUTE_MILLIS = SECOND_MILLIS*60;
public final static long HOUR_MILLIS = MINUTE_MILLIS*60;
public final static long DAY_MILLIS = HOUR_MILLIS*24;
public final static long YEAR_MILLIS = DAY_MILLIS*365;
public static DateFormat OUT_DATE_FORMAT = new SimpleDateFormat("dd/MM/yyyy");
public static DateFormat OUT_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat OUT_DATETIME_FORMAT = new SimpleDateFormat("d/M/yyyy H:mm:ss");
public static DateFormat OUT_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat IN_DATE_FORMAT = new SimpleDateFormat("d/M/yy");
public static DateFormat IN_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat IN_DATETIME_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss");
public static DateFormat IN_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat DATE_TIME_FORMAT= new SimpleDateFormat( "yyyyMMddkkmmss" );
public static Calendar calendar = new GregorianCalendar();
static
{
IN_DATE_FORMAT.setLenient(false);
IN_TIME_FORMAT.setLenient(false);
IN_DATETIME_FORMAT.setLenient(false);
}
/**
* Create a new DateTime. To the last second. This will not create any
* extra-millis-seconds, which may cause bugs when writing to stores such as
* databases that round milli-seconds up and down.
*/
public static java.util.Date newDateTime()
{
return new java.util.Date( (System.currentTimeMillis()/SECOND_MILLIS)*SECOND_MILLIS);
}
/**
* Create a new Date. To the last day.
*/
public static java.sql.Date newDate()
{
return new java.sql.Date( (System.currentTimeMillis()/DAY_MILLIS)*DAY_MILLIS);
}
/**
* Create a new Time, with no date component.
*/
public static java.sql.Time newTime()
{
return new java.sql.Time( System.currentTimeMillis()%DAY_MILLIS);
}
/**
* Create a new Timestamp.
*/
public static java.sql.Timestamp newTimestamp()
{
return new java.sql.Timestamp( System.currentTimeMillis() );
}
/**
* Get the seconds difference
*/
public static int secondsDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/SECOND_MILLIS) - (earlierDate.getTime()/SECOND_MILLIS));
}
/**
* Get the minutes difference
*/
public static int minutesDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/MINUTE_MILLIS) - (earlierDate.getTime()/MINUTE_MILLIS));
}
/**
* Get the hours difference
*/
public static int hoursDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/HOUR_MILLIS) - (earlierDate.getTime()/HOUR_MILLIS));
}
/**
* Get the days difference
*/
public static int daysDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/DAY_MILLIS) - (earlierDate.getTime()/DAY_MILLIS));
}
/**
* Roll the java.util.Time forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Time rollTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Time(gc.getTime().getTime());
}
/**
* Roll the java.util.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.util.Date rollDateTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.util.Date(gc.getTime().getTime());
}
/**
* Roll the java.sql.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Date rollDate( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Date(gc.getTime().getTime());
}
/**
* Roll the years forward or backward.
* @param startDate - The start date
* @param years - Negative to rollbackwards.
*/
public static java.sql.Date rollYears( java.util.Date startDate, int years )
{
return rollDate( startDate, Calendar.YEAR, years );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param months - Negative to rollbackwards.
*/
public static java.sql.Date rollMonths( java.util.Date startDate, int months )
{
return rollDate( startDate, Calendar.MONTH, months );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param days - Negative to rollbackwards.
*/
public static java.sql.Date rollDays( java.util.Date startDate, int days )
{
return rollDate( startDate, Calendar.DATE, days );
}
/**
* Checks the day, month and year are equal.
*/
public static boolean dateEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear();
}
/**
* Checks the hour, minute and second are equal.
*/
public static boolean timeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Checks the second, hour, month, day, month and year are equal.
*/
public static boolean dateTimeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear() &&
d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Convert an Object of type Classs to an Object.
*/
public static Object toObject( Class clazz, Object value ) throws ParseException
{
if( value == null ) return null;
if( clazz == null ) return value;
if( java.sql.Date.class.isAssignableFrom( clazz ) ) return toDate( value );
if( java.sql.Time.class.isAssignableFrom( clazz ) ) return toTime( value );
if( java.sql.Timestamp.class.isAssignableFrom( clazz ) ) return toTimestamp( value );
if( java.util.Date.class.isAssignableFrom( clazz ) ) return toDateTime( value );
return value;
}
/**
* Convert an Object to a DateTime, without an Exception
*/
public static java.util.Date getDateTime( Object value )
{
try
{
return toDateTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a DateTime.
*/
public static java.util.Date toDateTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.util.Date ) return (java.util.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return IN_DATETIME_FORMAT.parse( (String)value );
}
return IN_DATETIME_FORMAT.parse( value.toString() );
}
/**
* Convert an Object to a Date, without an Exception
*/
public static java.sql.Date getDate( Object value )
{
try
{
return toDate( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Date.
*/
public static java.sql.Date toDate( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Date ) return (java.sql.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Date( IN_DATE_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Date( IN_DATE_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Time, without an Exception
*/
public static java.sql.Time getTime( Object value )
{
try
{
return toTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Time.
*/
public static java.sql.Time toTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Time ) return (java.sql.Time)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Time( IN_TIME_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Time( IN_TIME_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Timestamp, without an Exception
*/
public static java.sql.Timestamp getTimestamp( Object value )
{
try
{
return toTimestamp( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Timestamp.
*/
public static java.sql.Timestamp toTimestamp( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Timestamp ) return (java.sql.Timestamp)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Tells you if the date part of a datetime is in a certain time range.
*/
public static boolean isTimeInRange( java.sql.Time start, java.sql.Time end, java.util.Date d )
{
d=new java.sql.Time(d.getHours(),d.getMinutes(),d.getSeconds());
if (start==null || end==null)
{
return false;
}
if (start.before(end)&&(!(d.after(start)&&d.before(end))))
{
return false;
}
if (end.before(start)&&(!(d.after(end)||d.before(start))))
{
return false;
}
return true;
}
public static int getYear( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.YEAR );
}
public static int getMonth( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MONTH );
}
public static int getDate( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.DATE );
}
public static int getHour( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.HOUR );
}
public static int getMinute( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MINUTE );
}
public static int getSeconds( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.SECOND );
}
public static int getMillisecond( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MILLISECOND );
}
/**
* Convert an Object to a String using Dates
*/
public static String toString( Object date )
{
if( date == null ) return null;
if( java.sql.Timestamp.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIMESTAMP_FORMAT.format( date );
}
if( java.sql.Time.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIME_FORMAT.format( date );
}
if( java.sql.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATE_FORMAT.format( date );
}
if( java.util.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATETIME_FORMAT.format( date );
}
throw new IllegalArgumentException( "Unsupported type " + date.getClass() );
}
}
</source>
Compare two dates
<source lang="java">
/**
* Copyright (c) 2003 - 2007 OpenSubsystems s.r.o. Slovak Republic. All rights reserved. * * Project: OpenSubsystems * * $Id: DateUtils.java,v 1.7 2007/01/07 06:14:00 bastafidli Exp $ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
import java.sql.Timestamp; import java.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar;
/**
* Collection of useful utilities to work with dates. * * @version $Id: DateUtils.java,v 1.7 2007/01/07 06:14:00 bastafidli Exp $ * @author Miro Halas * @code.reviewer Miro Halas * @code.reviewed 1.5 2005/09/13 13:23:15 bastafidli */
public final class DateUtils {
// Constants //////////////////////////////////////////////////////////////// /** * One second in milliseconds. */ public static final long ONE_SECOND = 1000L; /** * One minute in milliseconds. */ public static final long ONE_MINUTE = ONE_SECOND * 60L; /** * One hour in milliseconds. */ public static final long ONE_HOUR = ONE_MINUTE * 60L; /** * One day in milliseconds. */ public static final long ONE_DAY = ONE_HOUR * 24L; /** * Separator we used to separate time from the nanosecond portion of the * timestamp when converted to string. */ public static final char NANO_SEPARATOR = ":"; /** * Constant for timing type */ public static final int TIMING_NEVER = 0; /** * Constant for timing type */ public static final int TIMING_MINUTES = 1; /** * Constant for timing type */ public static final int TIMING_HOURS = 2; /** * Constant for timing type */ public static final int TIMING_DAYS = 3; /** * Constant for timing type */ public static final int TIMING_WEEKS = 4; /** * Constant for timing type */ public static final int TIMING_MONTHS = 5; /** * Constant for timing type */ public static final int TIMING_YEARS = 6; /** * Constant for timing type */ public static final int TIMING_NONE = 7; /** * Constant for current date code used in date/time formulas */ public static final String CURRENT_DATE_CODE = "now"; /** * Constant for dynamic date code used in date/time formulas */ public static final char YEAR_CODE = "y"; /** * Constant for dynamic date code used in date/time formulas */ public static final char MONTH_CODE = "M"; /** * Constant for dynamic date code used in date/time formulas */ public static final char WEEK_CODE = "w"; /** * Constant for dynamic date code used in date/time formulas */ public static final char DAY_CODE = "d"; /** * Constant for dynamic date code used in date/time formulas */ public static final char HOUR_CODE = "h"; /** * Constant for dynamic date code used in date/time formulas */ public static final char MINUTE_CODE = "m"; /** * Constant for dynamic date code used in date/time formulas */ public static final char SECOND_CODE = "s"; /** * constant for date type DATE */ public static final int DATE_TYPE_DATE = 1; /** * constant for date type TIME */ public static final int DATE_TYPE_TIME = 2; /** * constant for date type DATETIME */ public static final int DATE_TYPE_DATETIME = 3; // Constants for period start types /////////////////////////////////////////
// TODO: For Miro: Remove this code once all the code which referred to these // constants was fixed // /** // * constant for period type // */ // public static final int PERIOD_START_TYPE_NONE = 0; // // /** // * constant for period type // */ // public static final int PERIOD_START_TYPE_CREATION = 1; // // /** // * constant for period type // */ // public static final int PERIOD_START_TYPE_COMPLETION = 2; // // /** // * constant for period type // */ // public static final int PERIOD_START_TYPE_APPROVAL = 3; // // /** // * constant for period type // */ // public static final int PERIOD_START_TYPE_ACTIVATION = 4; // // /** // * constant for period type // */ // public static final int PERIOD_START_TYPE_INACTIVATION = 5; // // /** // * constant for period type // */ // public static final int PERIOD_START_TYPE_DYNAMIC = 6; // // /** // * constant for period type code // */ // public static final int PERIOD_TYPE_CODE = 99; // // /** // * constant for period type object // */ // public static final Integer PERIOD_TYPE_OBJ = new Integer(PERIOD_TYPE_CODE);
// Cached variables /////////////////////////////////////////////////////////
/**
* static SimpleDateFormat for date format to display on UI and in messages.
*/
public static final SimpleDateFormat DATE_FORMAT
= (SimpleDateFormat) DateFormat.getDateInstance(DateFormat.SHORT);
/**
* static SimpleDateFormat for time format to display on UI and in messages.
*/
public static final SimpleDateFormat TIME_FORMAT
= (SimpleDateFormat) DateFormat.getTimeInstance(DateFormat.MEDIUM);
/**
* static SimpleDateFormat for datetime format to display on UI and in messages.
*/
public static final SimpleDateFormat DATETIME_FORMAT
= (SimpleDateFormat) DateFormat.getDateTimeInstance(DateFormat.SHORT,
DateFormat.MEDIUM);
/**
* static SimpleDateFormat for date format to store date as string so that
* it is stored consistently.
*/
public static final SimpleDateFormat DATE_STORE_FORMAT
= new SimpleDateFormat("MM/dd/yyyy");
/**
* static SimpleDateFormat for time format to store time as string so that
* it is stored consistently.
*/
public static final SimpleDateFormat TIME_STORE_FORMAT
= new SimpleDateFormat("HH:mm:ss");
/**
* static SimpleDateFormat for datetime format to store date and time as
* string so that it is stored consistently.
*/
public static final SimpleDateFormat DATETIME_STORE_FORMAT
= new SimpleDateFormat("MM/dd/yyyy HH:mm:ss");
/**
* static SimpleDateFormat for date format for sql date
*/
public static final SimpleDateFormat DATE_SQL_FORMAT
= new SimpleDateFormat("yyyy-MM-dd 00:00:00");
/**
* static SimpleDateFormat for time format for sql time
*/
public static final SimpleDateFormat TIME_SQL_FORMAT
= new SimpleDateFormat("1970-01-01 HH:mm:ss");
/**
* static SimpleDateFormat for datetime format for sql date and time
*/
public static final SimpleDateFormat DATETIME_SQL_FORMAT
= new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
// Constructors /////////////////////////////////////////////////////////////
/**
* Private constructor since this class cannot be instantiated
*/
private DateUtils(
)
{
// Do nothing
}
// Public methods ///////////////////////////////////////////////////////////
/**
* Check if two dates equals regardless of the time. Two null dates are equal.
* Null and not null dates are not equal.
*
* @param dtFirst - first date to compare, can be null
* @param dtSecond - second date to compare, can be null
* @return boolean - true if two dates equals regardless of what the time is
*/
public static boolean dateEquals(
Date dtFirst,
Date dtSecond
)
{
boolean bReturn = false;
// If they are the same object, they are equals
bReturn = (dtFirst == dtSecond);
if (!bReturn)
{
if (dtFirst == null)
{
// Two null dates are the same
bReturn = (dtSecond == null);
}
else
{
if (dtSecond != null)
{
Calendar compCalendar;
int iEra;
int iYear;
int iMonth;
int iDay;
compCalendar = Calendar.getInstance();
compCalendar.setTime(dtFirst);
iEra = compCalendar.get(Calendar.ERA);
iYear = compCalendar.get(Calendar.YEAR);
iMonth = compCalendar.get(Calendar.MONTH);
iDay = compCalendar.get(Calendar.DATE);
compCalendar.setTime(dtSecond);
bReturn = ((iEra == compCalendar.get(Calendar.ERA))
&& (iYear == compCalendar.get(Calendar.YEAR))
&& (iMonth == compCalendar.get(Calendar.MONTH))
&& (iDay == compCalendar.get(Calendar.DATE)));
}
}
}
return bReturn;
}
/**
* Check if two times equals regardless of the date. Two null times are equal.
* Null and not null times are not equal.
*
* @param dtFirst - first time to compare, can be null
* @param dtSecond - second time to compare, can be null
* @param bIgnoreMilliseconds - if true milliseconds will be ignored in comparison
* @return boolean - true if two time equals regardless of what the date is
*/
public static boolean timeEquals(
Date dtFirst,
Date dtSecond,
boolean bIgnoreMilliseconds
)
{
boolean bReturn = false;
// If they are the same object, they are equals
bReturn = (dtFirst == dtSecond);
if (!bReturn)
{
if (dtFirst == null)
{
// Two null dates are the same
bReturn = (dtSecond == null);
}
else
{
if (dtSecond != null)
{
Calendar compCalendar;
int iHour;
int iMinute;
int iSecond;
int iMili;
compCalendar = Calendar.getInstance();
compCalendar.setTime(dtFirst);
iHour = compCalendar.get(Calendar.HOUR_OF_DAY);
iMinute = compCalendar.get(Calendar.MINUTE);
iSecond = compCalendar.get(Calendar.SECOND);
iMili = compCalendar.get(Calendar.MILLISECOND);
compCalendar.setTime(dtSecond);
bReturn = ((iHour == compCalendar.get(Calendar.HOUR_OF_DAY))
&& (iMinute == compCalendar.get(Calendar.MINUTE))
&& (iSecond == compCalendar.get(Calendar.SECOND))
&& ((bIgnoreMilliseconds)
|| (iMili == compCalendar.get(Calendar.MILLISECOND))));
}
}
}
return bReturn;
}
/**
* Check if two dates and times are equal. Two null dates are equal. Null
* and not null dates are not equal.
*
* @param dtFirst - first date time to compare, can be null
* @param dtSecond - second date time to compare, can be null
* @return boolean - true if two date and times are equal
*/
public static boolean dateAndTimeEquals(
Date dtFirst,
Date dtSecond
)
{
boolean bReturn = false;
// If they are the same object, they are equals
bReturn = (dtFirst == dtSecond);
if (!bReturn)
{
if (dtFirst == null)
{
// Two null dates are the same
bReturn = (dtSecond == null);
}
else
{
if (dtSecond != null)
{
// They are both not null so they have to match to millisecond
// (actually to nanosecond since the getTime takes nanoseconds
// into account)
bReturn = (dtFirst.getTime() == dtSecond.getTime());
}
}
}
return bReturn;
}
/**
* Check if String representing date is function or date. Date is a function
* (formula) if it starts with the current date/time variable which can be
* followed by expression describing period from current date.
*
* @param strValue - string representation of date or date function
* @return boolean - date function flag
*/
public static boolean isFunction(
String strValue
)
{
boolean bReturn = false;
if ((strValue != null) && (strValue.length() > 0)
&& (strValue.trim().startsWith(CURRENT_DATE_CODE)))
{
bReturn = true;
}
return bReturn;
}
/**
* Parse date time value from given string resolving any functions or formulas
* the string can contain. This method can be therefore used if the passed
* string contains string representation date, time or timestamp or a formula
* such as now + 3h - 1m + 4d.
*
* @param strValue - string representation of date or date function
* @param iDateType - date type code, one of the DATE_TYPE_XXX constants
* @param stored - flag if Date should be parsed using format used for
* storage or for display
* @return Timestamp - parsed date or null if date was null
* @throws OSSInvalidDataException - error during parsing
*/
public static Timestamp parseDateTime(
String strValue,
int iDateType,
boolean stored
)
{
Timestamp tsReturn = null;
Calendar workCal = GregorianCalendar.getInstance();
if (strValue != null && strValue.length() > 0)
{
strValue = strValue.trim();
if (strValue.startsWith(CURRENT_DATE_CODE))
{
strValue = strValue.replaceAll("[ ]", "");
// If the user specified "UseCurrent", then substitute the
// current date/time in the value
workCal.setTime(new Date());
// Log.getInstance().debug("Parsing current date " + strValue);
// Parse the date math
int iBeginIndex = CURRENT_DATE_CODE.length();
int iMaxLength = strValue.length();
int iSign = 1;
int iNumberIndex;
int iValue;
char cChar = " ";
while (iBeginIndex < iMaxLength)
{
// This has to be sign
if (strValue.charAt(iBeginIndex) == "+")
{
iSign = 1;
}
else if (strValue.charAt(iBeginIndex) == "-")
{
iSign = -1;
}
else
{
// Incorrect String
throw new RuntimeException(
"Date function is in incorrect format: "
+ strValue + " at " + strValue.substring(iBeginIndex));
}
iBeginIndex++;
// Now we have to have number
iNumberIndex = iBeginIndex;
while (((iBeginIndex == iNumberIndex) || Character.isDigit(cChar))
&& (iBeginIndex < iMaxLength))
{
cChar = strValue.charAt(iBeginIndex++);
}
// We have to go one back because we should stop on modifier (e.g 1m)
iBeginIndex--;
try
{
iValue = Integer.parseInt(strValue.substring(iNumberIndex, iBeginIndex));
}
catch (NumberFormatException nmeExc)
{
// Incorrect String
throw new RuntimeException(
"Date function is in incorrect format: "
+ strValue + " at " + strValue.substring(iNumberIndex));
}
// This has to be modifier: y - year, M - month, w - week,
// d - day, h - hour, m - minute, s - second
cChar = strValue.charAt(iBeginIndex);
switch(cChar)
{
case(YEAR_CODE):
{
if (iDateType == DATE_TYPE_TIME)
{
throw new RuntimeException(
"Date function is in incorrect format: " +
"used YEAR modifier for TIME type");
}
workCal.add(Calendar.YEAR, iSign * iValue);
break;
}
case(MONTH_CODE):
{
if (iDateType == DATE_TYPE_TIME)
{
throw new RuntimeException(
"Date function is in incorrect format: " +
"used MONTH modifier for TIME type");
}
workCal.add(Calendar.MONTH, iSign * iValue);
break;
}
case(WEEK_CODE):
{
if (iDateType == DATE_TYPE_TIME)
{
throw new RuntimeException(
"Date function is in incorrect format: " +
"used WEEK modifier for TIME type");
}
workCal.add(Calendar.WEEK_OF_YEAR, iSign * iValue);
break;
}
case(DAY_CODE):
{
if (iDateType == DATE_TYPE_TIME)
{
throw new RuntimeException(
"Date function is in incorrect format: " +
"used DAY modifier for TIME type");
}
workCal.add(Calendar.DATE, iSign * iValue);
break;
}
case(HOUR_CODE):
{
if (iDateType == DATE_TYPE_DATE)
{
throw new RuntimeException(
"Date function is in incorrect format: " +
"used HOUR modifier for DATE type");
}
workCal.add(Calendar.HOUR, iSign * iValue);
break;
}
case(MINUTE_CODE):
{
if (iDateType == DATE_TYPE_DATE)
{
throw new RuntimeException(
"Date function is in incorrect format: " +
"used MINUTE modifier for DATE type");
}
workCal.add(Calendar.MINUTE, iSign * iValue);
break;
}
case(SECOND_CODE):
{
if (iDateType == DATE_TYPE_DATE)
{
throw new RuntimeException(
"Date function is in incorrect format: " +
"used SECOND modifier for DATE type");
}
workCal.add(Calendar.SECOND, iSign * iValue);
break;
}
default:
{
// Incorrect String
throw new RuntimeException(
"Date function is in incorrect format: "
+ strValue + " at " + strValue.substring(iBeginIndex));
}
}
iBeginIndex++;
}
tsReturn = new Timestamp(workCal.getTimeInMillis());
}
else
{
try
{
if (stored)
{
switch (iDateType)
{
case (DATE_TYPE_DATE) :
{
tsReturn = new Timestamp(DATE_STORE_FORMAT.parse(strValue).getTime());
break;
}
case (DATE_TYPE_TIME) :
{
tsReturn = new Timestamp(TIME_STORE_FORMAT.parse(strValue).getTime());
break;
}
case (DATE_TYPE_DATETIME) :
{
tsReturn = new Timestamp(DATETIME_STORE_FORMAT.parse(strValue).getTime());
break;
}
default:
{
assert false : "Unknown date type " + iDateType;
}
}
}
else
{
switch (iDateType)
{
case (DATE_TYPE_DATE) :
{
tsReturn = new Timestamp(DATE_FORMAT.parse(strValue).getTime());
break;
}
case (DATE_TYPE_TIME) :
{
tsReturn = new Timestamp(TIME_FORMAT.parse(strValue).getTime());
break;
}
case (DATE_TYPE_DATETIME) :
{
tsReturn = new Timestamp(DATETIME_FORMAT.parse(strValue).getTime());
break;
}
default:
{
assert false : "Unknown date type " + iDateType;
}
}
}
}
catch (ParseException peExc)
{
throw new RuntimeException(
"Date is in incorrect format. Problems with parsing.",
peExc);
}
}
}
return tsReturn;
}
/**
* Parse the specified period into string displaying number of days the
* period represents.
*
* @param lPeriod - period in miliseconds
* @return String - period in format "x day(s)" or "" if not valid period
*/
public static String parseDayPeriod(
long lPeriod
)
{
StringBuffer sbReturn = new StringBuffer();
long lDays = 0L;
if (lPeriod > 0)
{
// we will count each started day as counted day
lPeriod = lPeriod + DateUtils.ONE_DAY - 1;
lDays = lPeriod / DateUtils.ONE_DAY;
sbReturn.append(lDays);
if (lDays == 1L)
{
sbReturn.append(" day");
}
else
{
sbReturn.append(" days");
}
}
else
{
sbReturn.append("0 days");
}
return sbReturn.toString();
}
/**
* Parse the specified period into string displaying date and time the
* period represents.
*
* @param lPeriod - preiod in miliseconds
* @return String - period in format "x day(s) y hour(s) z minute(s)"
* or "" if not valid period
*/
public static String parseDayTimePeriod(
long lPeriod
)
{
StringBuffer sbReturn = new StringBuffer();
long lHelp = 0L;
if (lPeriod > 0)
{
lPeriod = lPeriod + DateUtils.ONE_MINUTE - 1;
// we will count each started day as counted day
lHelp = lPeriod / DateUtils.ONE_DAY;
if (lHelp > 0)
{
sbReturn.append(lHelp);
if (lHelp == 1L)
{
sbReturn.append(" d ");
}
else
{
sbReturn.append(" d ");
}
}
lPeriod = lPeriod % DateUtils.ONE_DAY;
lHelp = lPeriod / DateUtils.ONE_HOUR;
if (lHelp > 0 || sbReturn.length() > 0)
{
sbReturn.append(lHelp);
if (lHelp == 1L)
{
sbReturn.append(" h ");
}
else
{
sbReturn.append(" h ");
}
}
lPeriod = lPeriod % DateUtils.ONE_HOUR;
lHelp = lPeriod / DateUtils.ONE_MINUTE;
if (lHelp > 0 || sbReturn.length() > 0)
{
sbReturn.append(lHelp);
if (lHelp == 1L)
{
sbReturn.append(" min");
}
else
{
sbReturn.append(" min");
}
}
}
else
{
sbReturn.append("0 min");
}
return sbReturn.toString();
}
// TODO: For Miro: Remove this code once all the code which referred to these // was fixed. These should be moved to a GUI related class. // /** // * Method for list of timing types. // * // * @return List - list of timing types // */ // public static List getTimingTypes( // ) // { // List lstTimingTypes = new ArrayList(); // // lstTimingTypes.add(new SelectOption(Integer.toString(DateUtils.TIMING_MINUTES), // "Minute(s)")); // lstTimingTypes.add(new SelectOption(Integer.toString(DateUtils.TIMING_HOURS), "Hour(s)")); // lstTimingTypes.add(new SelectOption(Integer.toString(DateUtils.TIMING_DAYS), "Day(s)")); // lstTimingTypes.add(new SelectOption(Integer.toString(DateUtils.TIMING_WEEKS), "Week(s)")); // lstTimingTypes.add(new SelectOption(Integer.toString(DateUtils.TIMING_MONTHS), "Month(s)")); // lstTimingTypes.add(new SelectOption(Integer.toString(DateUtils.TIMING_YEARS), "Year(s)")); // lstTimingTypes.add(new SelectOption(Integer.toString(DateUtils.TIMING_NEVER), "Never")); // // return lstTimingTypes; // } // /** // * Method for list of timing types with None option. // * // * @return List - list of timing types // */ // public static List getTimingTypesWithNone( // ) // { // List lstTimingTypes = new ArrayList(); // // lstTimingTypes.add(new SelectOption(Integer.toString(DateUtils.TIMING_NONE), "None")); // lstTimingTypes.add(new SelectOption(Integer.toString(DateUtils.TIMING_MINUTES), // "Minute(s)")); // lstTimingTypes.add(new SelectOption(Integer.toString(DateUtils.TIMING_HOURS), "Hour(s)")); // lstTimingTypes.add(new SelectOption(Integer.toString(DateUtils.TIMING_DAYS), "Day(s)")); // lstTimingTypes.add(new SelectOption(Integer.toString(DateUtils.TIMING_WEEKS), "Week(s)")); // lstTimingTypes.add(new SelectOption(Integer.toString(DateUtils.TIMING_MONTHS), "Month(s)")); // lstTimingTypes.add(new SelectOption(Integer.toString(DateUtils.TIMING_YEARS), "Year(s)")); // lstTimingTypes.add(new SelectOption(Integer.toString(DateUtils.TIMING_NEVER), "Never")); // // return lstTimingTypes; // } // /** // * Method for getting string name of the timing type. // * // * @param iTimingType - timing type constant // * @return String - string name of timing type // */ // public static String getTimingTypeName( // int iTimingType // ) // { // String outTimingTypeName = "Never"; // switch (iTimingType) // { // case (DateUtils.TIMING_NEVER): // { // outTimingTypeName = "Never"; // break; // } // case (DateUtils.TIMING_MINUTES): // { // outTimingTypeName = "Minute(s)"; // break; // } // case (DateUtils.TIMING_HOURS): // { // outTimingTypeName = "Hour(s)"; // break; // } // case (DateUtils.TIMING_DAYS): // { // outTimingTypeName = "Day(s)"; // break; // } // case (DateUtils.TIMING_WEEKS): // { // outTimingTypeName = "Week(s)"; // break; // } // case (DateUtils.TIMING_MONTHS): // { // outTimingTypeName = "Month(s)"; // break; // } // case (DateUtils.TIMING_YEARS): // { // outTimingTypeName = "Year(s)"; // break; // } // case (DateUtils.TIMING_NONE): // { // outTimingTypeName = "None"; // break; // } // } // // return outTimingTypeName; // }
/**
* Get expiration timestamp from start date, period type and duration. For
* example if the start date is now, period type is hour and duration is 2
* then the result will be timestamp representing now + 2 hours.
*
* @param tsStartDate - start date of period counting
* @param iPeriodType - one of the period type constant TIMING_XXX
* @param iPeriodDuration - period duration, number of time units specified
* by period type
* @return Timestamp - date of period expiration or null if any problem
*/
public static Timestamp getPeriodExpiration(
Timestamp tsStartDate,
int iPeriodType,
int iPeriodDuration
)
{
Timestamp tsReturn = null;
Calendar calHelp;
if (tsStartDate != null && iPeriodDuration > 0
&& iPeriodType > TIMING_NEVER && iPeriodType < TIMING_NONE)
{
calHelp = Calendar.getInstance();
calHelp.setTime(tsStartDate);
switch (iPeriodType)
{
case (TIMING_MINUTES) :
{
calHelp.add(Calendar.MINUTE, iPeriodDuration);
break;
}
case (TIMING_HOURS) :
{
calHelp.add(Calendar.HOUR, iPeriodDuration);
break;
}
case (TIMING_DAYS) :
{
calHelp.add(Calendar.DATE, iPeriodDuration);
break;
}
case (TIMING_WEEKS) :
{
calHelp.add(Calendar.WEEK_OF_YEAR, iPeriodDuration);
break;
}
case (TIMING_MONTHS) :
{
calHelp.add(Calendar.MONTH, iPeriodDuration);
break;
}
case (TIMING_YEARS) :
{
calHelp.add(Calendar.YEAR, iPeriodDuration);
break;
}
default :
{
assert false : "Not supported Timing type " + iPeriodType;
}
}
tsReturn = new Timestamp(calHelp.getTimeInMillis());
}
return tsReturn;
}
/**
* Method to compare time periods
*
* @param iPeriodType1 - first period type, one of the period type constant
* TIMING_XXX
* @param iPeriodDuration1 - first period duration
* @param iPeriodType2 - second period type, one of the period type constant
* TIMING_XXX
* @param iPeriodDuration2 - second period duration
* @return int - 1 - first period is longer
* 0 - periods are same
* -1 - first period is shorter
*/
public static int comparePeriods(
int iPeriodType1,
int iPeriodDuration1,
int iPeriodType2,
int iPeriodDuration2
)
{
int iReturn = 0;
if ((iPeriodType1 != TIMING_NEVER) && (iPeriodType1 != TIMING_NONE)
&& (iPeriodType2 != TIMING_NEVER) && (iPeriodType2 != TIMING_NONE))
{
Timestamp tsTimestamp1 = getPeriodExpiration(
new Timestamp(0), iPeriodType1, iPeriodDuration1);
Timestamp tsTimestamp2 = getPeriodExpiration(
new Timestamp(0), iPeriodType2, iPeriodDuration2);
// TODO: Improve: When would any of these be null?
if ((tsTimestamp1 != null) && (tsTimestamp2 != null))
{
if (tsTimestamp1.after(tsTimestamp2))
{
iReturn = 1;
}
else if (tsTimestamp2.after(tsTimestamp1))
{
iReturn = -1;
}
}
}
else
{
if (iPeriodType1 != iPeriodType2)
{
if (iPeriodType1 == TIMING_NEVER)
{
iReturn = 1;
}
else if (iPeriodType1 == TIMING_NONE)
{
iReturn = -1;
}
else if (iPeriodType2 == TIMING_NEVER)
{
iReturn = -1;
}
else if (iPeriodType2 == TIMING_NONE)
{
iReturn = 1;
}
}
}
return iReturn;
}
/**
* Convert timestamp to string including it"s nanosecond portion so that it
* can be safely stored in variable of web page.
*
* @param tsTimestamp - timestamp to convert
* @return String - text containing time and nanosecond portion of timestamp
*/
public static String getTimestampAsString(
Timestamp tsTimestamp
)
{
StringBuffer sbTimestamp = new StringBuffer();
sbTimestamp.append(tsTimestamp.getTime());
sbTimestamp.append(NANO_SEPARATOR);
sbTimestamp.append(tsTimestamp.getNanos());
return sbTimestamp.toString();
}
/**
* Function returns time string in the form MM:SS.MS from the input specified in miliseconds.
*
* @param lTimeInMiliseconds - time in miliseconds
* @return String - string representation of miliseconds in the form MM:SS.MS
*/
public static String getStringTime(
long lTimeInMiliseconds
)
{
long lTotalMS = lTimeInMiliseconds;
long lMS = lTotalMS % 1000;
long lTotalSecs = lTotalMS / 1000;
long lSecs = lTotalSecs % 60;
long lTotalMins = lTotalSecs / 60;
long lMinutes = lTotalMins % 60;
long lHours = lTotalMins / 60;
StringBuffer sbBuffer = new StringBuffer();
if (lHours > 0)
{
sbBuffer.append(lHours);
sbBuffer.append(":");
sbBuffer.append(lMinutes);
sbBuffer.append(":");
sbBuffer.append(lSecs);
sbBuffer.append(".");
sbBuffer.append(lMS);
}
else if (lMinutes > 0)
{
sbBuffer.append(lMinutes);
sbBuffer.append(":");
sbBuffer.append(lSecs);
sbBuffer.append(".");
sbBuffer.append(lMS);
}
else if (lSecs > 0)
{
sbBuffer.append(lSecs);
sbBuffer.append(".");
sbBuffer.append(lMS);
sbBuffer.append(" seconds");
}
else
{
sbBuffer.append(lMS);
sbBuffer.append(" ms");
}
return sbBuffer.toString();
}
// TODO: For Miro: Remove this code once all the code which referred to these // was fixed. These should be moved to a GUI or business logic related class. // /** // * Method to check if valid period settings // * // * @param iPeriod - period length // * @param iPeriodType - period type // * @param iPeriodStartType - period start type // * @param iAttributeId - attribute ID for dynamic period start type // * @param bPeriodException - period exception flag // * @param strPeriodName - period name used for exception message // * @param bAdvancePeriodType - flag if advanced period type (includes also start type) // * @param bfideException - invalid data exception // */ // public static void validatePeriod( // int iPeriod, // int iPeriodType, // int iPeriodStartType, // int iAttributeId, // boolean bPeriodException, // String strPeriodName, // boolean bAdvancePeriodType, // OSSInvalidDataException messageException // ) // { // if ((iPeriod > 0) // || ((iPeriodType != TIMING_NONE) && (iPeriodType != TIMING_NEVER)) // || (bPeriodException) || (iPeriodStartType != PERIOD_START_TYPE_NONE)) // { // if (iPeriod <= 0) // { // if (messageException == null) // { // messageException = new OSSInvalidDataException(); // } // messageException.getErrorMessages().addMessage( // PERIOD_TYPE_OBJ, // "You have to set valid period length for " + strPeriodName + " type." // ); // } // else if ((iPeriodType == TIMING_NONE) || (iPeriodType == TIMING_NEVER)) // { // if (messageException == null) // { // messageException = new OSSInvalidDataException(); // } // messageException.getErrorMessages().addMessage( // PERIOD_TYPE_OBJ, // "You have to set valid period type for " + strPeriodName + " type." // ); // } // else if ((bAdvancePeriodType) && (iPeriodStartType == PERIOD_START_TYPE_NONE)) // { // if (messageException == null) // { // messageException = new OSSInvalidDataException(); // } // messageException.getErrorMessages().addMessage( // PERIOD_TYPE_OBJ, // "You have to set valid period start type for " + strPeriodName + " type." // ); // } // else if ((bAdvancePeriodType) // && (iPeriodStartType == PERIOD_START_TYPE_DYNAMIC) // && (iAttributeId == DataObject.NEW_ID)) // { // if (messageException == null) // { // messageException = new OSSInvalidDataException(); // } // messageException.getErrorMessages().addMessage( // PERIOD_TYPE_OBJ, // "You have to set valid period dynamic start attribute for " // + strPeriodName + " type." // ); // } // } // } }
</source>
Get the days difference
<source lang="java">
/*
* Copyright Javelin Software, All rights reserved. */
import java.util.*; import java.text.*; /**
* The DateUtil is used as a Utility Class for Dates. * * @author Robin Sharp */
public class DateUtil {
public final static long SECOND_MILLIS = 1000;
public final static long MINUTE_MILLIS = SECOND_MILLIS*60;
public final static long HOUR_MILLIS = MINUTE_MILLIS*60;
public final static long DAY_MILLIS = HOUR_MILLIS*24;
public final static long YEAR_MILLIS = DAY_MILLIS*365;
public static DateFormat OUT_DATE_FORMAT = new SimpleDateFormat("dd/MM/yyyy");
public static DateFormat OUT_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat OUT_DATETIME_FORMAT = new SimpleDateFormat("d/M/yyyy H:mm:ss");
public static DateFormat OUT_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat IN_DATE_FORMAT = new SimpleDateFormat("d/M/yy");
public static DateFormat IN_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat IN_DATETIME_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss");
public static DateFormat IN_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat DATE_TIME_FORMAT= new SimpleDateFormat( "yyyyMMddkkmmss" );
public static Calendar calendar = new GregorianCalendar();
static
{
IN_DATE_FORMAT.setLenient(false);
IN_TIME_FORMAT.setLenient(false);
IN_DATETIME_FORMAT.setLenient(false);
}
/**
* Create a new DateTime. To the last second. This will not create any
* extra-millis-seconds, which may cause bugs when writing to stores such as
* databases that round milli-seconds up and down.
*/
public static java.util.Date newDateTime()
{
return new java.util.Date( (System.currentTimeMillis()/SECOND_MILLIS)*SECOND_MILLIS);
}
/**
* Create a new Date. To the last day.
*/
public static java.sql.Date newDate()
{
return new java.sql.Date( (System.currentTimeMillis()/DAY_MILLIS)*DAY_MILLIS);
}
/**
* Create a new Time, with no date component.
*/
public static java.sql.Time newTime()
{
return new java.sql.Time( System.currentTimeMillis()%DAY_MILLIS);
}
/**
* Create a new Timestamp.
*/
public static java.sql.Timestamp newTimestamp()
{
return new java.sql.Timestamp( System.currentTimeMillis() );
}
/**
* Get the seconds difference
*/
public static int secondsDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/SECOND_MILLIS) - (earlierDate.getTime()/SECOND_MILLIS));
}
/**
* Get the minutes difference
*/
public static int minutesDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/MINUTE_MILLIS) - (earlierDate.getTime()/MINUTE_MILLIS));
}
/**
* Get the hours difference
*/
public static int hoursDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/HOUR_MILLIS) - (earlierDate.getTime()/HOUR_MILLIS));
}
/**
* Get the days difference
*/
public static int daysDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/DAY_MILLIS) - (earlierDate.getTime()/DAY_MILLIS));
}
/**
* Roll the java.util.Time forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Time rollTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Time(gc.getTime().getTime());
}
/**
* Roll the java.util.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.util.Date rollDateTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.util.Date(gc.getTime().getTime());
}
/**
* Roll the java.sql.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Date rollDate( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Date(gc.getTime().getTime());
}
/**
* Roll the years forward or backward.
* @param startDate - The start date
* @param years - Negative to rollbackwards.
*/
public static java.sql.Date rollYears( java.util.Date startDate, int years )
{
return rollDate( startDate, Calendar.YEAR, years );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param months - Negative to rollbackwards.
*/
public static java.sql.Date rollMonths( java.util.Date startDate, int months )
{
return rollDate( startDate, Calendar.MONTH, months );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param days - Negative to rollbackwards.
*/
public static java.sql.Date rollDays( java.util.Date startDate, int days )
{
return rollDate( startDate, Calendar.DATE, days );
}
/**
* Checks the day, month and year are equal.
*/
public static boolean dateEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear();
}
/**
* Checks the hour, minute and second are equal.
*/
public static boolean timeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Checks the second, hour, month, day, month and year are equal.
*/
public static boolean dateTimeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear() &&
d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Convert an Object of type Classs to an Object.
*/
public static Object toObject( Class clazz, Object value ) throws ParseException
{
if( value == null ) return null;
if( clazz == null ) return value;
if( java.sql.Date.class.isAssignableFrom( clazz ) ) return toDate( value );
if( java.sql.Time.class.isAssignableFrom( clazz ) ) return toTime( value );
if( java.sql.Timestamp.class.isAssignableFrom( clazz ) ) return toTimestamp( value );
if( java.util.Date.class.isAssignableFrom( clazz ) ) return toDateTime( value );
return value;
}
/**
* Convert an Object to a DateTime, without an Exception
*/
public static java.util.Date getDateTime( Object value )
{
try
{
return toDateTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a DateTime.
*/
public static java.util.Date toDateTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.util.Date ) return (java.util.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return IN_DATETIME_FORMAT.parse( (String)value );
}
return IN_DATETIME_FORMAT.parse( value.toString() );
}
/**
* Convert an Object to a Date, without an Exception
*/
public static java.sql.Date getDate( Object value )
{
try
{
return toDate( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Date.
*/
public static java.sql.Date toDate( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Date ) return (java.sql.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Date( IN_DATE_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Date( IN_DATE_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Time, without an Exception
*/
public static java.sql.Time getTime( Object value )
{
try
{
return toTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Time.
*/
public static java.sql.Time toTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Time ) return (java.sql.Time)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Time( IN_TIME_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Time( IN_TIME_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Timestamp, without an Exception
*/
public static java.sql.Timestamp getTimestamp( Object value )
{
try
{
return toTimestamp( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Timestamp.
*/
public static java.sql.Timestamp toTimestamp( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Timestamp ) return (java.sql.Timestamp)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Tells you if the date part of a datetime is in a certain time range.
*/
public static boolean isTimeInRange( java.sql.Time start, java.sql.Time end, java.util.Date d )
{
d=new java.sql.Time(d.getHours(),d.getMinutes(),d.getSeconds());
if (start==null || end==null)
{
return false;
}
if (start.before(end)&&(!(d.after(start)&&d.before(end))))
{
return false;
}
if (end.before(start)&&(!(d.after(end)||d.before(start))))
{
return false;
}
return true;
}
public static int getYear( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.YEAR );
}
public static int getMonth( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MONTH );
}
public static int getDate( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.DATE );
}
public static int getHour( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.HOUR );
}
public static int getMinute( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MINUTE );
}
public static int getSeconds( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.SECOND );
}
public static int getMillisecond( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MILLISECOND );
}
/**
* Convert an Object to a String using Dates
*/
public static String toString( Object date )
{
if( date == null ) return null;
if( java.sql.Timestamp.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIMESTAMP_FORMAT.format( date );
}
if( java.sql.Time.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIME_FORMAT.format( date );
}
if( java.sql.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATE_FORMAT.format( date );
}
if( java.util.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATETIME_FORMAT.format( date );
}
throw new IllegalArgumentException( "Unsupported type " + date.getClass() );
}
}
</source>
Get the days passed from the specified date up to the date provided in the constructor
<source lang="java">
/*
* Funambol is a mobile platform developed by Funambol, Inc. * Copyright (C) 2003 - 2007 Funambol, Inc. * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU Affero General Public License version 3 as published by * the Free Software Foundation with the addition of the following permission * added to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED * WORK IN WHICH THE COPYRIGHT IS OWNED BY FUNAMBOL, FUNAMBOL DISCLAIMS THE * WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * You should have received a copy of the GNU Affero General Public License * along with this program; if not, see http://www.gnu.org/licenses or write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301 USA. * * You can contact Funambol, Inc. headquarters at 643 Bair Island Road, Suite * 305, Redwood City, CA 94063, USA, or at email address info@funambol.ru. * * The interactive user interfaces in modified source and object code versions * of this program must display Appropriate Legal Notices, as required under * Section 5 of the GNU Affero General Public License version 3. * * In accordance with Section 7(b) of the GNU Affero General Public License * version 3, these Appropriate Legal Notices must retain the display of the * "Powered by Funambol" logo. If the display of the logo is not reasonably * feasible for technical reasons, the Appropriate Legal Notices must display * the words "Powered by Funambol". */
import java.util.Calendar; import java.util.Date; import java.util.TimeZone;
/**
* Utility class for date manipulation. * This class gives a simple interface for common Date, Calendar and Timezone * operations. * It is possible to apply subsequent transformations to an initial date, and * retrieve the changed Date object at any point. * */
public class DateUtil {
//-------------------------------------------------------------- Attributes
private Calendar cal;
//------------------------------------------------------------ Constructors
/** Inizialize a new instance with the current date */
public DateUtil() {
this(new Date());
}
/** Inizialize a new instance with the given date */
public DateUtil(Date d) {
cal = Calendar.getInstance();
cal.setTime(d);
}
//---------------------------------------------------------- Public methods
/** Set a new time */
public void setTime(Date d) {
cal.setTime(d);
}
/** Get the current time */
public Date getTime() {
return cal.getTime();
}
/** Get the current TimeZone */
public String getTZ() {
return cal.getTimeZone().getID();
}
/**
* Convert the time to the midnight of the currently set date.
* The internal date is changed after this call.
*
* @return a reference to this DateUtil, for concatenation.
*/
public DateUtil toMidnight() {
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND,0);
return this;
}
/**
* Make the date go back of the specified amount of days
* The internal date is changed after this call.
*
* @return a reference to this DateUtil, for concatenation.
*/
public DateUtil removeDays(int days) {
Date d = cal.getTime();
long time = d.getTime();
time -= days * 24 * 3600 * 1000;
d.setTime(time);
cal.setTime(d);
return this;
}
/**
* Make the date go forward of the specified amount of minutes
* The internal date is changed after this call.
*
* @return a reference to this DateUtil, for concatenation.
*/
public DateUtil addMinutes(int minutes) {
Date d = cal.getTime();
long time = d.getTime();
time += minutes * 60 * 1000;
d.setTime(time);
cal.setTime(d);
return this;
}
/**
* Convert the date to GMT. The internal date is changed
*
* @return a reference to this DateUtil, for concatenation.
*/
public DateUtil toGMT() {
return toTZ("GMT");
}
/**
* Convert the date to the given timezone. The internal date is changed.
*
* @param tz The name of the timezone to set
*
* @return a reference to this DateUtil, for concatenation.
*/
public DateUtil toTZ(String tz) {
cal.setTimeZone(TimeZone.getTimeZone(tz));
return this;
}
/**
* Get the days passed from the specified date up to the date provided
* in the constructor
*
* @param date The starting date
*
* @return number of days within date used in constructor and the provided
* date
*/
public int getDaysSince(Date date) {
long millisecs = date.getTime();
Date d = cal.getTime();
long time = d.getTime();
long daysMillisecs = time - millisecs;
int days = (int)((((daysMillisecs / 1000)/60)/60)/24);
return days;
}
/**
* Utility method wrapping Calendar.after method
* Compares the date field parameter with the date provided with the constructor
* answering the question: date from constructor is after the given param date ?
*
* @param date The date to be used for comparison
*
* @return true if date from constructor is after given param date
*/
public boolean isAfter(Date date) {
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date);
return cal.after(cal2);
}
}
</source>
Get the hours difference
<source lang="java">
/*
* Copyright Javelin Software, All rights reserved. */
import java.util.*; import java.text.*; /**
* The DateUtil is used as a Utility Class for Dates. * * @author Robin Sharp */
public class DateUtil {
public final static long SECOND_MILLIS = 1000;
public final static long MINUTE_MILLIS = SECOND_MILLIS*60;
public final static long HOUR_MILLIS = MINUTE_MILLIS*60;
public final static long DAY_MILLIS = HOUR_MILLIS*24;
public final static long YEAR_MILLIS = DAY_MILLIS*365;
public static DateFormat OUT_DATE_FORMAT = new SimpleDateFormat("dd/MM/yyyy");
public static DateFormat OUT_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat OUT_DATETIME_FORMAT = new SimpleDateFormat("d/M/yyyy H:mm:ss");
public static DateFormat OUT_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat IN_DATE_FORMAT = new SimpleDateFormat("d/M/yy");
public static DateFormat IN_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat IN_DATETIME_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss");
public static DateFormat IN_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat DATE_TIME_FORMAT= new SimpleDateFormat( "yyyyMMddkkmmss" );
public static Calendar calendar = new GregorianCalendar();
static
{
IN_DATE_FORMAT.setLenient(false);
IN_TIME_FORMAT.setLenient(false);
IN_DATETIME_FORMAT.setLenient(false);
}
/**
* Create a new DateTime. To the last second. This will not create any
* extra-millis-seconds, which may cause bugs when writing to stores such as
* databases that round milli-seconds up and down.
*/
public static java.util.Date newDateTime()
{
return new java.util.Date( (System.currentTimeMillis()/SECOND_MILLIS)*SECOND_MILLIS);
}
/**
* Create a new Date. To the last day.
*/
public static java.sql.Date newDate()
{
return new java.sql.Date( (System.currentTimeMillis()/DAY_MILLIS)*DAY_MILLIS);
}
/**
* Create a new Time, with no date component.
*/
public static java.sql.Time newTime()
{
return new java.sql.Time( System.currentTimeMillis()%DAY_MILLIS);
}
/**
* Create a new Timestamp.
*/
public static java.sql.Timestamp newTimestamp()
{
return new java.sql.Timestamp( System.currentTimeMillis() );
}
/**
* Get the seconds difference
*/
public static int secondsDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/SECOND_MILLIS) - (earlierDate.getTime()/SECOND_MILLIS));
}
/**
* Get the minutes difference
*/
public static int minutesDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/MINUTE_MILLIS) - (earlierDate.getTime()/MINUTE_MILLIS));
}
/**
* Get the hours difference
*/
public static int hoursDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/HOUR_MILLIS) - (earlierDate.getTime()/HOUR_MILLIS));
}
/**
* Get the days difference
*/
public static int daysDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/DAY_MILLIS) - (earlierDate.getTime()/DAY_MILLIS));
}
/**
* Roll the java.util.Time forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Time rollTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Time(gc.getTime().getTime());
}
/**
* Roll the java.util.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.util.Date rollDateTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.util.Date(gc.getTime().getTime());
}
/**
* Roll the java.sql.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Date rollDate( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Date(gc.getTime().getTime());
}
/**
* Roll the years forward or backward.
* @param startDate - The start date
* @param years - Negative to rollbackwards.
*/
public static java.sql.Date rollYears( java.util.Date startDate, int years )
{
return rollDate( startDate, Calendar.YEAR, years );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param months - Negative to rollbackwards.
*/
public static java.sql.Date rollMonths( java.util.Date startDate, int months )
{
return rollDate( startDate, Calendar.MONTH, months );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param days - Negative to rollbackwards.
*/
public static java.sql.Date rollDays( java.util.Date startDate, int days )
{
return rollDate( startDate, Calendar.DATE, days );
}
/**
* Checks the day, month and year are equal.
*/
public static boolean dateEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear();
}
/**
* Checks the hour, minute and second are equal.
*/
public static boolean timeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Checks the second, hour, month, day, month and year are equal.
*/
public static boolean dateTimeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear() &&
d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Convert an Object of type Classs to an Object.
*/
public static Object toObject( Class clazz, Object value ) throws ParseException
{
if( value == null ) return null;
if( clazz == null ) return value;
if( java.sql.Date.class.isAssignableFrom( clazz ) ) return toDate( value );
if( java.sql.Time.class.isAssignableFrom( clazz ) ) return toTime( value );
if( java.sql.Timestamp.class.isAssignableFrom( clazz ) ) return toTimestamp( value );
if( java.util.Date.class.isAssignableFrom( clazz ) ) return toDateTime( value );
return value;
}
/**
* Convert an Object to a DateTime, without an Exception
*/
public static java.util.Date getDateTime( Object value )
{
try
{
return toDateTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a DateTime.
*/
public static java.util.Date toDateTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.util.Date ) return (java.util.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return IN_DATETIME_FORMAT.parse( (String)value );
}
return IN_DATETIME_FORMAT.parse( value.toString() );
}
/**
* Convert an Object to a Date, without an Exception
*/
public static java.sql.Date getDate( Object value )
{
try
{
return toDate( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Date.
*/
public static java.sql.Date toDate( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Date ) return (java.sql.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Date( IN_DATE_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Date( IN_DATE_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Time, without an Exception
*/
public static java.sql.Time getTime( Object value )
{
try
{
return toTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Time.
*/
public static java.sql.Time toTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Time ) return (java.sql.Time)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Time( IN_TIME_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Time( IN_TIME_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Timestamp, without an Exception
*/
public static java.sql.Timestamp getTimestamp( Object value )
{
try
{
return toTimestamp( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Timestamp.
*/
public static java.sql.Timestamp toTimestamp( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Timestamp ) return (java.sql.Timestamp)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Tells you if the date part of a datetime is in a certain time range.
*/
public static boolean isTimeInRange( java.sql.Time start, java.sql.Time end, java.util.Date d )
{
d=new java.sql.Time(d.getHours(),d.getMinutes(),d.getSeconds());
if (start==null || end==null)
{
return false;
}
if (start.before(end)&&(!(d.after(start)&&d.before(end))))
{
return false;
}
if (end.before(start)&&(!(d.after(end)||d.before(start))))
{
return false;
}
return true;
}
public static int getYear( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.YEAR );
}
public static int getMonth( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MONTH );
}
public static int getDate( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.DATE );
}
public static int getHour( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.HOUR );
}
public static int getMinute( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MINUTE );
}
public static int getSeconds( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.SECOND );
}
public static int getMillisecond( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MILLISECOND );
}
/**
* Convert an Object to a String using Dates
*/
public static String toString( Object date )
{
if( date == null ) return null;
if( java.sql.Timestamp.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIMESTAMP_FORMAT.format( date );
}
if( java.sql.Time.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIME_FORMAT.format( date );
}
if( java.sql.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATE_FORMAT.format( date );
}
if( java.util.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATETIME_FORMAT.format( date );
}
throw new IllegalArgumentException( "Unsupported type " + date.getClass() );
}
}
</source>
Get the minutes difference
<source lang="java">
/*
* Copyright Javelin Software, All rights reserved. */
import java.util.*; import java.text.*; /**
* The DateUtil is used as a Utility Class for Dates. * * @author Robin Sharp */
public class DateUtil {
public final static long SECOND_MILLIS = 1000;
public final static long MINUTE_MILLIS = SECOND_MILLIS*60;
public final static long HOUR_MILLIS = MINUTE_MILLIS*60;
public final static long DAY_MILLIS = HOUR_MILLIS*24;
public final static long YEAR_MILLIS = DAY_MILLIS*365;
public static DateFormat OUT_DATE_FORMAT = new SimpleDateFormat("dd/MM/yyyy");
public static DateFormat OUT_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat OUT_DATETIME_FORMAT = new SimpleDateFormat("d/M/yyyy H:mm:ss");
public static DateFormat OUT_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat IN_DATE_FORMAT = new SimpleDateFormat("d/M/yy");
public static DateFormat IN_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat IN_DATETIME_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss");
public static DateFormat IN_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat DATE_TIME_FORMAT= new SimpleDateFormat( "yyyyMMddkkmmss" );
public static Calendar calendar = new GregorianCalendar();
static
{
IN_DATE_FORMAT.setLenient(false);
IN_TIME_FORMAT.setLenient(false);
IN_DATETIME_FORMAT.setLenient(false);
}
/**
* Create a new DateTime. To the last second. This will not create any
* extra-millis-seconds, which may cause bugs when writing to stores such as
* databases that round milli-seconds up and down.
*/
public static java.util.Date newDateTime()
{
return new java.util.Date( (System.currentTimeMillis()/SECOND_MILLIS)*SECOND_MILLIS);
}
/**
* Create a new Date. To the last day.
*/
public static java.sql.Date newDate()
{
return new java.sql.Date( (System.currentTimeMillis()/DAY_MILLIS)*DAY_MILLIS);
}
/**
* Create a new Time, with no date component.
*/
public static java.sql.Time newTime()
{
return new java.sql.Time( System.currentTimeMillis()%DAY_MILLIS);
}
/**
* Create a new Timestamp.
*/
public static java.sql.Timestamp newTimestamp()
{
return new java.sql.Timestamp( System.currentTimeMillis() );
}
/**
* Get the seconds difference
*/
public static int secondsDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/SECOND_MILLIS) - (earlierDate.getTime()/SECOND_MILLIS));
}
/**
* Get the minutes difference
*/
public static int minutesDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/MINUTE_MILLIS) - (earlierDate.getTime()/MINUTE_MILLIS));
}
/**
* Get the hours difference
*/
public static int hoursDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/HOUR_MILLIS) - (earlierDate.getTime()/HOUR_MILLIS));
}
/**
* Get the days difference
*/
public static int daysDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/DAY_MILLIS) - (earlierDate.getTime()/DAY_MILLIS));
}
/**
* Roll the java.util.Time forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Time rollTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Time(gc.getTime().getTime());
}
/**
* Roll the java.util.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.util.Date rollDateTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.util.Date(gc.getTime().getTime());
}
/**
* Roll the java.sql.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Date rollDate( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Date(gc.getTime().getTime());
}
/**
* Roll the years forward or backward.
* @param startDate - The start date
* @param years - Negative to rollbackwards.
*/
public static java.sql.Date rollYears( java.util.Date startDate, int years )
{
return rollDate( startDate, Calendar.YEAR, years );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param months - Negative to rollbackwards.
*/
public static java.sql.Date rollMonths( java.util.Date startDate, int months )
{
return rollDate( startDate, Calendar.MONTH, months );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param days - Negative to rollbackwards.
*/
public static java.sql.Date rollDays( java.util.Date startDate, int days )
{
return rollDate( startDate, Calendar.DATE, days );
}
/**
* Checks the day, month and year are equal.
*/
public static boolean dateEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear();
}
/**
* Checks the hour, minute and second are equal.
*/
public static boolean timeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Checks the second, hour, month, day, month and year are equal.
*/
public static boolean dateTimeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear() &&
d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Convert an Object of type Classs to an Object.
*/
public static Object toObject( Class clazz, Object value ) throws ParseException
{
if( value == null ) return null;
if( clazz == null ) return value;
if( java.sql.Date.class.isAssignableFrom( clazz ) ) return toDate( value );
if( java.sql.Time.class.isAssignableFrom( clazz ) ) return toTime( value );
if( java.sql.Timestamp.class.isAssignableFrom( clazz ) ) return toTimestamp( value );
if( java.util.Date.class.isAssignableFrom( clazz ) ) return toDateTime( value );
return value;
}
/**
* Convert an Object to a DateTime, without an Exception
*/
public static java.util.Date getDateTime( Object value )
{
try
{
return toDateTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a DateTime.
*/
public static java.util.Date toDateTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.util.Date ) return (java.util.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return IN_DATETIME_FORMAT.parse( (String)value );
}
return IN_DATETIME_FORMAT.parse( value.toString() );
}
/**
* Convert an Object to a Date, without an Exception
*/
public static java.sql.Date getDate( Object value )
{
try
{
return toDate( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Date.
*/
public static java.sql.Date toDate( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Date ) return (java.sql.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Date( IN_DATE_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Date( IN_DATE_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Time, without an Exception
*/
public static java.sql.Time getTime( Object value )
{
try
{
return toTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Time.
*/
public static java.sql.Time toTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Time ) return (java.sql.Time)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Time( IN_TIME_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Time( IN_TIME_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Timestamp, without an Exception
*/
public static java.sql.Timestamp getTimestamp( Object value )
{
try
{
return toTimestamp( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Timestamp.
*/
public static java.sql.Timestamp toTimestamp( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Timestamp ) return (java.sql.Timestamp)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Tells you if the date part of a datetime is in a certain time range.
*/
public static boolean isTimeInRange( java.sql.Time start, java.sql.Time end, java.util.Date d )
{
d=new java.sql.Time(d.getHours(),d.getMinutes(),d.getSeconds());
if (start==null || end==null)
{
return false;
}
if (start.before(end)&&(!(d.after(start)&&d.before(end))))
{
return false;
}
if (end.before(start)&&(!(d.after(end)||d.before(start))))
{
return false;
}
return true;
}
public static int getYear( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.YEAR );
}
public static int getMonth( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MONTH );
}
public static int getDate( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.DATE );
}
public static int getHour( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.HOUR );
}
public static int getMinute( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MINUTE );
}
public static int getSeconds( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.SECOND );
}
public static int getMillisecond( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MILLISECOND );
}
/**
* Convert an Object to a String using Dates
*/
public static String toString( Object date )
{
if( date == null ) return null;
if( java.sql.Timestamp.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIMESTAMP_FORMAT.format( date );
}
if( java.sql.Time.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIME_FORMAT.format( date );
}
if( java.sql.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATE_FORMAT.format( date );
}
if( java.util.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATETIME_FORMAT.format( date );
}
throw new IllegalArgumentException( "Unsupported type " + date.getClass() );
}
}
</source>
Get the seconds difference
<source lang="java">
/*
* Copyright Javelin Software, All rights reserved. */
import java.util.*; import java.text.*; /**
* The DateUtil is used as a Utility Class for Dates. * * @author Robin Sharp */
public class DateUtil {
public final static long SECOND_MILLIS = 1000;
public final static long MINUTE_MILLIS = SECOND_MILLIS*60;
public final static long HOUR_MILLIS = MINUTE_MILLIS*60;
public final static long DAY_MILLIS = HOUR_MILLIS*24;
public final static long YEAR_MILLIS = DAY_MILLIS*365;
public static DateFormat OUT_DATE_FORMAT = new SimpleDateFormat("dd/MM/yyyy");
public static DateFormat OUT_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat OUT_DATETIME_FORMAT = new SimpleDateFormat("d/M/yyyy H:mm:ss");
public static DateFormat OUT_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat IN_DATE_FORMAT = new SimpleDateFormat("d/M/yy");
public static DateFormat IN_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat IN_DATETIME_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss");
public static DateFormat IN_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat DATE_TIME_FORMAT= new SimpleDateFormat( "yyyyMMddkkmmss" );
public static Calendar calendar = new GregorianCalendar();
static
{
IN_DATE_FORMAT.setLenient(false);
IN_TIME_FORMAT.setLenient(false);
IN_DATETIME_FORMAT.setLenient(false);
}
/**
* Create a new DateTime. To the last second. This will not create any
* extra-millis-seconds, which may cause bugs when writing to stores such as
* databases that round milli-seconds up and down.
*/
public static java.util.Date newDateTime()
{
return new java.util.Date( (System.currentTimeMillis()/SECOND_MILLIS)*SECOND_MILLIS);
}
/**
* Create a new Date. To the last day.
*/
public static java.sql.Date newDate()
{
return new java.sql.Date( (System.currentTimeMillis()/DAY_MILLIS)*DAY_MILLIS);
}
/**
* Create a new Time, with no date component.
*/
public static java.sql.Time newTime()
{
return new java.sql.Time( System.currentTimeMillis()%DAY_MILLIS);
}
/**
* Create a new Timestamp.
*/
public static java.sql.Timestamp newTimestamp()
{
return new java.sql.Timestamp( System.currentTimeMillis() );
}
/**
* Get the seconds difference
*/
public static int secondsDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/SECOND_MILLIS) - (earlierDate.getTime()/SECOND_MILLIS));
}
/**
* Get the minutes difference
*/
public static int minutesDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/MINUTE_MILLIS) - (earlierDate.getTime()/MINUTE_MILLIS));
}
/**
* Get the hours difference
*/
public static int hoursDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/HOUR_MILLIS) - (earlierDate.getTime()/HOUR_MILLIS));
}
/**
* Get the days difference
*/
public static int daysDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/DAY_MILLIS) - (earlierDate.getTime()/DAY_MILLIS));
}
/**
* Roll the java.util.Time forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Time rollTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Time(gc.getTime().getTime());
}
/**
* Roll the java.util.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.util.Date rollDateTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.util.Date(gc.getTime().getTime());
}
/**
* Roll the java.sql.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Date rollDate( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Date(gc.getTime().getTime());
}
/**
* Roll the years forward or backward.
* @param startDate - The start date
* @param years - Negative to rollbackwards.
*/
public static java.sql.Date rollYears( java.util.Date startDate, int years )
{
return rollDate( startDate, Calendar.YEAR, years );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param months - Negative to rollbackwards.
*/
public static java.sql.Date rollMonths( java.util.Date startDate, int months )
{
return rollDate( startDate, Calendar.MONTH, months );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param days - Negative to rollbackwards.
*/
public static java.sql.Date rollDays( java.util.Date startDate, int days )
{
return rollDate( startDate, Calendar.DATE, days );
}
/**
* Checks the day, month and year are equal.
*/
public static boolean dateEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear();
}
/**
* Checks the hour, minute and second are equal.
*/
public static boolean timeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Checks the second, hour, month, day, month and year are equal.
*/
public static boolean dateTimeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear() &&
d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Convert an Object of type Classs to an Object.
*/
public static Object toObject( Class clazz, Object value ) throws ParseException
{
if( value == null ) return null;
if( clazz == null ) return value;
if( java.sql.Date.class.isAssignableFrom( clazz ) ) return toDate( value );
if( java.sql.Time.class.isAssignableFrom( clazz ) ) return toTime( value );
if( java.sql.Timestamp.class.isAssignableFrom( clazz ) ) return toTimestamp( value );
if( java.util.Date.class.isAssignableFrom( clazz ) ) return toDateTime( value );
return value;
}
/**
* Convert an Object to a DateTime, without an Exception
*/
public static java.util.Date getDateTime( Object value )
{
try
{
return toDateTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a DateTime.
*/
public static java.util.Date toDateTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.util.Date ) return (java.util.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return IN_DATETIME_FORMAT.parse( (String)value );
}
return IN_DATETIME_FORMAT.parse( value.toString() );
}
/**
* Convert an Object to a Date, without an Exception
*/
public static java.sql.Date getDate( Object value )
{
try
{
return toDate( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Date.
*/
public static java.sql.Date toDate( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Date ) return (java.sql.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Date( IN_DATE_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Date( IN_DATE_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Time, without an Exception
*/
public static java.sql.Time getTime( Object value )
{
try
{
return toTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Time.
*/
public static java.sql.Time toTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Time ) return (java.sql.Time)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Time( IN_TIME_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Time( IN_TIME_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Timestamp, without an Exception
*/
public static java.sql.Timestamp getTimestamp( Object value )
{
try
{
return toTimestamp( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Timestamp.
*/
public static java.sql.Timestamp toTimestamp( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Timestamp ) return (java.sql.Timestamp)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Tells you if the date part of a datetime is in a certain time range.
*/
public static boolean isTimeInRange( java.sql.Time start, java.sql.Time end, java.util.Date d )
{
d=new java.sql.Time(d.getHours(),d.getMinutes(),d.getSeconds());
if (start==null || end==null)
{
return false;
}
if (start.before(end)&&(!(d.after(start)&&d.before(end))))
{
return false;
}
if (end.before(start)&&(!(d.after(end)||d.before(start))))
{
return false;
}
return true;
}
public static int getYear( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.YEAR );
}
public static int getMonth( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MONTH );
}
public static int getDate( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.DATE );
}
public static int getHour( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.HOUR );
}
public static int getMinute( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MINUTE );
}
public static int getSeconds( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.SECOND );
}
public static int getMillisecond( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MILLISECOND );
}
/**
* Convert an Object to a String using Dates
*/
public static String toString( Object date )
{
if( date == null ) return null;
if( java.sql.Timestamp.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIMESTAMP_FORMAT.format( date );
}
if( java.sql.Time.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIME_FORMAT.format( date );
}
if( java.sql.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATE_FORMAT.format( date );
}
if( java.util.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATETIME_FORMAT.format( date );
}
throw new IllegalArgumentException( "Unsupported type " + date.getClass() );
}
}
</source>
Make the date go back of the specified amount of days
<source lang="java">
/*
* Funambol is a mobile platform developed by Funambol, Inc. * Copyright (C) 2003 - 2007 Funambol, Inc. * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU Affero General Public License version 3 as published by * the Free Software Foundation with the addition of the following permission * added to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED * WORK IN WHICH THE COPYRIGHT IS OWNED BY FUNAMBOL, FUNAMBOL DISCLAIMS THE * WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * You should have received a copy of the GNU Affero General Public License * along with this program; if not, see http://www.gnu.org/licenses or write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301 USA. * * You can contact Funambol, Inc. headquarters at 643 Bair Island Road, Suite * 305, Redwood City, CA 94063, USA, or at email address info@funambol.ru. * * The interactive user interfaces in modified source and object code versions * of this program must display Appropriate Legal Notices, as required under * Section 5 of the GNU Affero General Public License version 3. * * In accordance with Section 7(b) of the GNU Affero General Public License * version 3, these Appropriate Legal Notices must retain the display of the * "Powered by Funambol" logo. If the display of the logo is not reasonably * feasible for technical reasons, the Appropriate Legal Notices must display * the words "Powered by Funambol". */
import java.util.Calendar; import java.util.Date; import java.util.TimeZone;
/**
* Utility class for date manipulation. * This class gives a simple interface for common Date, Calendar and Timezone * operations. * It is possible to apply subsequent transformations to an initial date, and * retrieve the changed Date object at any point. * */
public class DateUtil {
//-------------------------------------------------------------- Attributes
private Calendar cal;
//------------------------------------------------------------ Constructors
/** Inizialize a new instance with the current date */
public DateUtil() {
this(new Date());
}
/** Inizialize a new instance with the given date */
public DateUtil(Date d) {
cal = Calendar.getInstance();
cal.setTime(d);
}
//---------------------------------------------------------- Public methods
/** Set a new time */
public void setTime(Date d) {
cal.setTime(d);
}
/** Get the current time */
public Date getTime() {
return cal.getTime();
}
/** Get the current TimeZone */
public String getTZ() {
return cal.getTimeZone().getID();
}
/**
* Convert the time to the midnight of the currently set date.
* The internal date is changed after this call.
*
* @return a reference to this DateUtil, for concatenation.
*/
public DateUtil toMidnight() {
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND,0);
return this;
}
/**
* Make the date go back of the specified amount of days
* The internal date is changed after this call.
*
* @return a reference to this DateUtil, for concatenation.
*/
public DateUtil removeDays(int days) {
Date d = cal.getTime();
long time = d.getTime();
time -= days * 24 * 3600 * 1000;
d.setTime(time);
cal.setTime(d);
return this;
}
/**
* Make the date go forward of the specified amount of minutes
* The internal date is changed after this call.
*
* @return a reference to this DateUtil, for concatenation.
*/
public DateUtil addMinutes(int minutes) {
Date d = cal.getTime();
long time = d.getTime();
time += minutes * 60 * 1000;
d.setTime(time);
cal.setTime(d);
return this;
}
/**
* Convert the date to GMT. The internal date is changed
*
* @return a reference to this DateUtil, for concatenation.
*/
public DateUtil toGMT() {
return toTZ("GMT");
}
/**
* Convert the date to the given timezone. The internal date is changed.
*
* @param tz The name of the timezone to set
*
* @return a reference to this DateUtil, for concatenation.
*/
public DateUtil toTZ(String tz) {
cal.setTimeZone(TimeZone.getTimeZone(tz));
return this;
}
/**
* Get the days passed from the specified date up to the date provided
* in the constructor
*
* @param date The starting date
*
* @return number of days within date used in constructor and the provided
* date
*/
public int getDaysSince(Date date) {
long millisecs = date.getTime();
Date d = cal.getTime();
long time = d.getTime();
long daysMillisecs = time - millisecs;
int days = (int)((((daysMillisecs / 1000)/60)/60)/24);
return days;
}
/**
* Utility method wrapping Calendar.after method
* Compares the date field parameter with the date provided with the constructor
* answering the question: date from constructor is after the given param date ?
*
* @param date The date to be used for comparison
*
* @return true if date from constructor is after given param date
*/
public boolean isAfter(Date date) {
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date);
return cal.after(cal2);
}
}
</source>
Make the date go forward of the specified amount of minutes
<source lang="java">
/*
* Funambol is a mobile platform developed by Funambol, Inc. * Copyright (C) 2003 - 2007 Funambol, Inc. * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU Affero General Public License version 3 as published by * the Free Software Foundation with the addition of the following permission * added to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED * WORK IN WHICH THE COPYRIGHT IS OWNED BY FUNAMBOL, FUNAMBOL DISCLAIMS THE * WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * You should have received a copy of the GNU Affero General Public License * along with this program; if not, see http://www.gnu.org/licenses or write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301 USA. * * You can contact Funambol, Inc. headquarters at 643 Bair Island Road, Suite * 305, Redwood City, CA 94063, USA, or at email address info@funambol.ru. * * The interactive user interfaces in modified source and object code versions * of this program must display Appropriate Legal Notices, as required under * Section 5 of the GNU Affero General Public License version 3. * * In accordance with Section 7(b) of the GNU Affero General Public License * version 3, these Appropriate Legal Notices must retain the display of the * "Powered by Funambol" logo. If the display of the logo is not reasonably * feasible for technical reasons, the Appropriate Legal Notices must display * the words "Powered by Funambol". */
import java.util.Calendar; import java.util.Date; import java.util.TimeZone;
/**
* Utility class for date manipulation. * This class gives a simple interface for common Date, Calendar and Timezone * operations. * It is possible to apply subsequent transformations to an initial date, and * retrieve the changed Date object at any point. * */
public class DateUtil {
//-------------------------------------------------------------- Attributes
private Calendar cal;
//------------------------------------------------------------ Constructors
/** Inizialize a new instance with the current date */
public DateUtil() {
this(new Date());
}
/** Inizialize a new instance with the given date */
public DateUtil(Date d) {
cal = Calendar.getInstance();
cal.setTime(d);
}
//---------------------------------------------------------- Public methods
/** Set a new time */
public void setTime(Date d) {
cal.setTime(d);
}
/** Get the current time */
public Date getTime() {
return cal.getTime();
}
/** Get the current TimeZone */
public String getTZ() {
return cal.getTimeZone().getID();
}
/**
* Convert the time to the midnight of the currently set date.
* The internal date is changed after this call.
*
* @return a reference to this DateUtil, for concatenation.
*/
public DateUtil toMidnight() {
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND,0);
return this;
}
/**
* Make the date go back of the specified amount of days
* The internal date is changed after this call.
*
* @return a reference to this DateUtil, for concatenation.
*/
public DateUtil removeDays(int days) {
Date d = cal.getTime();
long time = d.getTime();
time -= days * 24 * 3600 * 1000;
d.setTime(time);
cal.setTime(d);
return this;
}
/**
* Make the date go forward of the specified amount of minutes
* The internal date is changed after this call.
*
* @return a reference to this DateUtil, for concatenation.
*/
public DateUtil addMinutes(int minutes) {
Date d = cal.getTime();
long time = d.getTime();
time += minutes * 60 * 1000;
d.setTime(time);
cal.setTime(d);
return this;
}
/**
* Convert the date to GMT. The internal date is changed
*
* @return a reference to this DateUtil, for concatenation.
*/
public DateUtil toGMT() {
return toTZ("GMT");
}
/**
* Convert the date to the given timezone. The internal date is changed.
*
* @param tz The name of the timezone to set
*
* @return a reference to this DateUtil, for concatenation.
*/
public DateUtil toTZ(String tz) {
cal.setTimeZone(TimeZone.getTimeZone(tz));
return this;
}
/**
* Get the days passed from the specified date up to the date provided
* in the constructor
*
* @param date The starting date
*
* @return number of days within date used in constructor and the provided
* date
*/
public int getDaysSince(Date date) {
long millisecs = date.getTime();
Date d = cal.getTime();
long time = d.getTime();
long daysMillisecs = time - millisecs;
int days = (int)((((daysMillisecs / 1000)/60)/60)/24);
return days;
}
/**
* Utility method wrapping Calendar.after method
* Compares the date field parameter with the date provided with the constructor
* answering the question: date from constructor is after the given param date ?
*
* @param date The date to be used for comparison
*
* @return true if date from constructor is after given param date
*/
public boolean isAfter(Date date) {
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date);
return cal.after(cal2);
}
}
</source>
Returns a Date set just to Noon, to the closest possible millisecond of the day.
<source lang="java">
/*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. The ASF licenses this file to You * under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. For additional information regarding * copyright in this work, please see the NOTICE file in the top level * directory of this distribution. */
import java.util.Calendar; import java.util.Date; public class Utils {
/**
* Returns a Date set just to Noon, to the closest possible millisecond
* of the day. If a null day is passed in, a new Date is created.
* nnoon (00m 12h 00s)
*/
public static Date getNoonOfDay(Date day, Calendar cal) {
if (day == null) day = new Date();
cal.setTime(day);
cal.set(Calendar.HOUR_OF_DAY, 12);
cal.set(Calendar.MINUTE, cal.getMinimum(Calendar.MINUTE));
cal.set(Calendar.SECOND, cal.getMinimum(Calendar.SECOND));
cal.set(Calendar.MILLISECOND, cal.getMinimum(Calendar.MILLISECOND));
return cal.getTime();
}
}
</source>
Returns a Date set to the first possible millisecond of the day, just after midnight.
<source lang="java">
/*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. The ASF licenses this file to You * under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. For additional information regarding * copyright in this work, please see the NOTICE file in the top level * directory of this distribution. */
import java.util.Calendar; import java.util.Date; public class Utils {
/**
* Returns a Date set to the first possible millisecond of the day, just
* after midnight. If a null day is passed in, a new Date is created.
* midnight (00m 00h 00s)
*/
public static Date getStartOfDay(Date day) {
return getStartOfDay(day, Calendar.getInstance());
}
/**
* Returns a Date set to the first possible millisecond of the day, just
* after midnight. If a null day is passed in, a new Date is created.
* midnight (00m 00h 00s)
*/
public static Date getStartOfDay(Date day, Calendar cal) {
if (day == null) day = new Date();
cal.setTime(day);
cal.set(Calendar.HOUR_OF_DAY, cal.getMinimum(Calendar.HOUR_OF_DAY));
cal.set(Calendar.MINUTE, cal.getMinimum(Calendar.MINUTE));
cal.set(Calendar.SECOND, cal.getMinimum(Calendar.SECOND));
cal.set(Calendar.MILLISECOND, cal.getMinimum(Calendar.MILLISECOND));
return cal.getTime();
}
}
</source>
Returns a Date set to the first possible millisecond of the month, just after midnight.
<source lang="java">
/*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. The ASF licenses this file to You * under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. For additional information regarding * copyright in this work, please see the NOTICE file in the top level * directory of this distribution. */
import java.util.Calendar; import java.util.Date; public class Utils {
/**
* Returns a Date set to the first possible millisecond of the month, just
* after midnight. If a null day is passed in, a new Date is created.
* midnight (00m 00h 00s)
*/
public static Date getStartOfMonth(Date day) {
return getStartOfMonth(day, Calendar.getInstance());
}
public static Date getStartOfMonth(Date day, Calendar cal) {
if (day == null) day = new Date();
cal.setTime(day);
// set time to start of day
cal.set(Calendar.HOUR_OF_DAY, cal.getMinimum(Calendar.HOUR_OF_DAY));
cal.set(Calendar.MINUTE, cal.getMinimum(Calendar.MINUTE));
cal.set(Calendar.SECOND, cal.getMinimum(Calendar.SECOND));
cal.set(Calendar.MILLISECOND, cal.getMinimum(Calendar.MILLISECOND));
// set time to first day of month
cal.set(Calendar.DAY_OF_MONTH, 1);
return cal.getTime();
}
}
</source>
Returns a Date set to the last possible millisecond of the day, just before midnight.
<source lang="java">
/*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. The ASF licenses this file to You * under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. For additional information regarding * copyright in this work, please see the NOTICE file in the top level * directory of this distribution. */
import java.util.Calendar; import java.util.Date; public class Utils {
/**
* Returns a Date set to the last possible millisecond of the day, just
* before midnight. If a null day is passed in, a new Date is created.
* midnight (00m 00h 00s)
*/
public static Date getEndOfDay(Date day) {
return getEndOfDay(day,Calendar.getInstance());
}
public static Date getEndOfDay(Date day,Calendar cal) {
if (day == null) day = new Date();
cal.setTime(day);
cal.set(Calendar.HOUR_OF_DAY, cal.getMaximum(Calendar.HOUR_OF_DAY));
cal.set(Calendar.MINUTE, cal.getMaximum(Calendar.MINUTE));
cal.set(Calendar.SECOND, cal.getMaximum(Calendar.SECOND));
cal.set(Calendar.MILLISECOND, cal.getMaximum(Calendar.MILLISECOND));
return cal.getTime();
}
}
</source>
Returns a Date set to the last possible millisecond of the minute.
<source lang="java">
/*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. The ASF licenses this file to You * under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. For additional information regarding * copyright in this work, please see the NOTICE file in the top level * directory of this distribution. */
import java.util.Calendar; import java.util.Date; public class Utils {
/**
* Returns a Date set to the last possible millisecond of the minute.
* If a null day is passed in, a new Date is created.
*/
public static Date getEndOfMinute(Date day) {
return getEndOfMinute(day, Calendar.getInstance());
}
public static Date getEndOfMinute(Date day, Calendar cal) {
if (day == null || cal == null) {
return day;
}
cal.setTime(day);
cal.set(Calendar.SECOND, cal.getMaximum(Calendar.SECOND));
cal.set(Calendar.MILLISECOND, cal.getMaximum(Calendar.MILLISECOND));
return cal.getTime();
}
}
</source>
Returns a Date set to the last possible millisecond of the month, just before midnight.
<source lang="java">
/*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. The ASF licenses this file to You * under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. For additional information regarding * copyright in this work, please see the NOTICE file in the top level * directory of this distribution. */
import java.util.Calendar; import java.util.Date; public class Utils {
/**
* Returns a Date set to the last possible millisecond of the month, just
* before midnight. If a null day is passed in, a new Date is created.
* midnight (00m 00h 00s)
*/
public static Date getEndOfMonth(Date day) {
return getEndOfMonth(day, Calendar.getInstance());
}
public static Date getEndOfMonth(Date day,Calendar cal) {
if (day == null) day = new Date();
cal.setTime(day);
// set time to end of day
cal.set(Calendar.HOUR_OF_DAY, cal.getMaximum(Calendar.HOUR_OF_DAY));
cal.set(Calendar.MINUTE, cal.getMaximum(Calendar.MINUTE));
cal.set(Calendar.SECOND, cal.getMaximum(Calendar.SECOND));
cal.set(Calendar.MILLISECOND, cal.getMaximum(Calendar.MILLISECOND));
// set time to first day of month
cal.set(Calendar.DAY_OF_MONTH, 1);
// add one month
cal.add(Calendar.MONTH, 1);
// back up one day
cal.add(Calendar.DAY_OF_MONTH, -1);
return cal.getTime();
}
}
</source>
Returns a java.sql.Timestamp equal to the current time
<source lang="java">
public class Utils {
/**
* Returns a java.sql.Timestamp equal to the current time
**/
public static java.sql.Timestamp now() {
return new java.sql.Timestamp(new java.util.Date().getTime());
}
}
</source>
Returns the maximum of two dates. A null date is treated as being less than any non-null date
<source lang="java">
import java.util.Calendar; import java.util.Date; public class DateUtils {
/***
Checks if two dates are on the same day ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either date is null
*/
public static boolean isSameDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isSameDay(cal1, cal2);
}
/**
* Checks if two calendars represent the same day ignoring time.
* @param cal1 the first calendar, not altered, not null
* @param cal2 the second calendar, not altered, not null
* @return true if they represent the same day
* @throws IllegalArgumentException if either calendar is null
*/
public static boolean isSameDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
return (cal1.get(Calendar.ERA) == cal2.get(Calendar.ERA) &&
cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) &&
cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR));
}
/**
* Checks if a date is today.
* @param date the date, not altered, not null.
* @return true if the date is today.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isToday(Date date) {
return isSameDay(date, Calendar.getInstance().getTime());
}
/**
* Checks if a calendar date is today.
* @param cal the calendar, not altered, not null
* @return true if cal date is today
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isToday(Calendar cal) {
return isSameDay(cal, Calendar.getInstance());
}
/**
* Checks if the first date is before the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is before the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isBeforeDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isBeforeDay(cal1, cal2);
}
/**
* Checks if the first calendar date is before the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is before cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isBeforeDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return true;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return false;
return cal1.get(Calendar.DAY_OF_YEAR) < cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if the first date is after the second date ignoring time.
* @param date1 the first date, not altered, not null
* @param date2 the second date, not altered, not null
* @return true if the first date day is after the second date day.
* @throws IllegalArgumentException if the date is null
*/
public static boolean isAfterDay(Date date1, Date date2) {
if (date1 == null || date2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
return isAfterDay(cal1, cal2);
}
/**
* Checks if the first calendar date is after the second calendar date ignoring time.
* @param cal1 the first calendar, not altered, not null.
* @param cal2 the second calendar, not altered, not null.
* @return true if cal1 date is after cal2 date ignoring time.
* @throws IllegalArgumentException if either of the calendars are null
*/
public static boolean isAfterDay(Calendar cal1, Calendar cal2) {
if (cal1 == null || cal2 == null) {
throw new IllegalArgumentException("The dates must not be null");
}
if (cal1.get(Calendar.ERA) < cal2.get(Calendar.ERA)) return false;
if (cal1.get(Calendar.ERA) > cal2.get(Calendar.ERA)) return true;
if (cal1.get(Calendar.YEAR) < cal2.get(Calendar.YEAR)) return false;
if (cal1.get(Calendar.YEAR) > cal2.get(Calendar.YEAR)) return true;
return cal1.get(Calendar.DAY_OF_YEAR) > cal2.get(Calendar.DAY_OF_YEAR);
}
/**
* Checks if a date is after today and within a number of days in the future.
* @param date the date to check, not altered, not null.
* @param days the number of days.
* @return true if the date day is after today and within days in the future .
* @throws IllegalArgumentException if the date is null
*/
public static boolean isWithinDaysFuture(Date date, int days) {
if (date == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar cal = Calendar.getInstance();
cal.setTime(date);
return isWithinDaysFuture(cal, days);
}
/**
* Checks if a calendar date is after today and within a number of days in the future.
* @param cal the calendar, not altered, not null
* @param days the number of days.
* @return true if the calendar date day is after today and within days in the future .
* @throws IllegalArgumentException if the calendar is null
*/
public static boolean isWithinDaysFuture(Calendar cal, int days) {
if (cal == null) {
throw new IllegalArgumentException("The date must not be null");
}
Calendar today = Calendar.getInstance();
Calendar future = Calendar.getInstance();
future.add(Calendar.DAY_OF_YEAR, days);
return (isAfterDay(cal, today) && ! isAfterDay(cal, future));
}
/** Returns the given date with the time set to the start of the day. */
public static Date getStart(Date date) {
return clearTime(date);
}
/** Returns the given date with the time values cleared. */
public static Date clearTime(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 0);
c.set(Calendar.MINUTE, 0);
c.set(Calendar.SECOND, 0);
c.set(Calendar.MILLISECOND, 0);
return c.getTime();
}
/** Determines whether or not a date has any time values (hour, minute,
* seconds or millisecondsReturns the given date with the time values cleared. */
/**
* Determines whether or not a date has any time values.
* @param date The date.
* @return true iff the date is not null and any of the date"s hour, minute,
* seconds or millisecond values are greater than zero.
*/
public static boolean hasTime(Date date) {
if (date == null) {
return false;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
if (c.get(Calendar.HOUR_OF_DAY) > 0) {
return true;
}
if (c.get(Calendar.MINUTE) > 0) {
return true;
}
if (c.get(Calendar.SECOND) > 0) {
return true;
}
if (c.get(Calendar.MILLISECOND) > 0) {
return true;
}
return false;
}
/** Returns the given date with time set to the end of the day */
public static Date getEnd(Date date) {
if (date == null) {
return null;
}
Calendar c = Calendar.getInstance();
c.setTime(date);
c.set(Calendar.HOUR_OF_DAY, 23);
c.set(Calendar.MINUTE, 59);
c.set(Calendar.SECOND, 59);
c.set(Calendar.MILLISECOND, 999);
return c.getTime();
}
/**
* Returns the maximum of two dates. A null date is treated as being less
* than any non-null date.
*/
public static Date max(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.after(d2)) ? d1 : d2;
}
/**
* Returns the minimum of two dates. A null date is treated as being greater
* than any non-null date.
*/
public static Date min(Date d1, Date d2) {
if (d1 == null && d2 == null) return null;
if (d1 == null) return d2;
if (d2 == null) return d1;
return (d1.before(d2)) ? d1 : d2;
}
/** The maximum date possible. */
public static Date MAX_DATE = new Date(Long.MAX_VALUE);
}
</source>
Returns the number of days within the fragment.
<source lang="java">
import java.util.Calendar; import java.util.Date; import java.util.Iterator; import java.util.TimeZone;
/**
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
/**
A suite of utilities surrounding the use of the * {@link java.util.Calendar} and {@link java.util.Date} object.
**
DateUtils contains a lot of common methods considering manipulations * of Dates or Calendars. Some methods require some extra explanation. * The truncate and round methods could be considered the Math.floor(), * Math.ceil() or Math.round versions for dates * This way date-fields will be ignored in bottom-up order. * As a complement to these methods we"ve introduced some fragment-methods. * With these methods the Date-fields will be ignored in top-down order. * Since a date without a year is not a valid date, you have to decide in what * kind of date-field you want your result, for instance milliseconds or days. *
* * * * @author * @author Phil Steitz * @author Robert Scholte * @since 2.0 * @version $Id: DateUtils.java 634096 2008-03-06 00:58:11Z niallp $ */
public class Main {
/**
* The UTC time zone (often referred to as GMT).
*/
public static final TimeZone UTC_TIME_ZONE = TimeZone.getTimeZone("GMT");
/**
* Number of milliseconds in a standard second.
* @since 2.1
*/
public static final long MILLIS_PER_SECOND = 1000;
/**
* Number of milliseconds in a standard minute.
* @since 2.1
*/
public static final long MILLIS_PER_MINUTE = 60 * MILLIS_PER_SECOND;
/**
* Number of milliseconds in a standard hour.
* @since 2.1
*/
public static final long MILLIS_PER_HOUR = 60 * MILLIS_PER_MINUTE;
/**
* Number of milliseconds in a standard day.
* @since 2.1
*/
public static final long MILLIS_PER_DAY = 24 * MILLIS_PER_HOUR;
/**
* This is half a month, so this represents whether a date is in the top
* or bottom half of the month.
*/
public final static int SEMI_MONTH = 1001;
private static final int[][] fields = {
{Calendar.MILLISECOND},
{Calendar.SECOND},
{Calendar.MINUTE},
{Calendar.HOUR_OF_DAY, Calendar.HOUR},
{Calendar.DATE, Calendar.DAY_OF_MONTH, Calendar.AM_PM
/* Calendar.DAY_OF_YEAR, Calendar.DAY_OF_WEEK, Calendar.DAY_OF_WEEK_IN_MONTH */
},
{Calendar.MONTH, DateUtils.SEMI_MONTH},
{Calendar.YEAR},
{Calendar.ERA}};
/**
* A week range, starting on Sunday.
*/
public final static int RANGE_WEEK_SUNDAY = 1;
/**
* A week range, starting on Monday.
*/
public final static int RANGE_WEEK_MONDAY = 2;
/**
* A week range, starting on the day focused.
*/
public final static int RANGE_WEEK_RELATIVE = 3;
/**
* A week range, centered around the day focused.
*/
public final static int RANGE_WEEK_CENTER = 4;
/**
* A month range, the week starting on Sunday.
*/
public final static int RANGE_MONTH_SUNDAY = 5;
/**
* A month range, the week starting on Monday.
*/
public final static int RANGE_MONTH_MONDAY = 6;
/**
* Returns the number of days within the * fragment. All datefields greater than the fragment will be ignored.
**
Asking the days of any date will only return the number of days * of the current month (resulting in a number between 1 and 31). This * method will retrieve the number of days for any fragment. * For example, if you want to calculate the number of days past this year, * your fragment is Calendar.YEAR. The result will be all days of the * past month(s).
**
Valid fragments are: Calendar.YEAR, Calendar.MONTH, both * Calendar.DAY_OF_YEAR and Calendar.DATE, Calendar.HOUR_OF_DAY, * Calendar.MINUTE, Calendar.SECOND and Calendar.MILLISECOND * A fragment less than or equal to a DAY field will return 0.
**
*
-
*
- January 28, 2008 with Calendar.MONTH as fragment will return 28 * (equivalent to calendar.get(Calendar.DAY_OF_MONTH)) *
- February 28, 2008 with Calendar.MONTH as fragment will return 28 * (equivalent to calendar.get(Calendar.DAY_OF_MONTH)) *
- January 28, 2008 with Calendar.YEAR as fragment will return 28 * (equivalent to calendar.get(Calendar.DAY_OF_YEAR)) *
- February 28, 2008 with Calendar.YEAR as fragment will return 59 * (equivalent to calendar.get(Calendar.DAY_OF_YEAR)) *
- January 28, 2008 with Calendar.MILLISECOND as fragment will return 0 * (a millisecond cannot be split in days) *
* * @param calendar the calendar to work with, not null * @param fragment the Calendar field part of calendar to calculate * @return number of days within the fragment of date * @throws IllegalArgumentException if the date isnullor * fragment is not supported * @since 2.4 */ public static long getFragmentInDays(Calendar calendar, int fragment) { return getFragment(calendar, fragment, Calendar.DAY_OF_YEAR); } /** * Date-version for fragment-calculation in any unit * * @param date the date to work with, not null * @param fragment the Calendar field part of date to calculate * @param unit Calendar field defining the unit * @return number of units within the fragment of the date * @throws IllegalArgumentException if the date isnullor * fragment is not supported * @since 2.4 */ private static long getFragment(Date date, int fragment, int unit) { if(date == null) { throw new IllegalArgumentException("The date must not be null"); } Calendar calendar = Calendar.getInstance(); calendar.setTime(date); return getFragment(calendar, fragment, unit); } /** * Calendar-version for fragment-calculation in any unit * * @param calendar the calendar to work with, not null * @param fragment the Calendar field part of calendar to calculate * @param unit Calendar field defining the unit * @return number of units within the fragment of the calendar * @throws IllegalArgumentException if the date isnullor * fragment is not supported * @since 2.4 */ private static long getFragment(Calendar calendar, int fragment, int unit) { if(calendar == null) { throw new IllegalArgumentException("The date must not be null"); } long millisPerUnit = getMillisPerUnit(unit); long result = 0; // Fragments bigger than a day require a breakdown to days switch (fragment) { case Calendar.YEAR: result += (calendar.get(Calendar.DAY_OF_YEAR) * MILLIS_PER_DAY) / millisPerUnit; break; case Calendar.MONTH: result += (calendar.get(Calendar.DAY_OF_MONTH) * MILLIS_PER_DAY) / millisPerUnit; break; } switch (fragment) { // Number of days already calculated for these cases case Calendar.YEAR: case Calendar.MONTH: // The rest of the valid cases case Calendar.DAY_OF_YEAR: case Calendar.DATE: result += (calendar.get(Calendar.HOUR_OF_DAY) * MILLIS_PER_HOUR) / millisPerUnit; case Calendar.HOUR_OF_DAY: result += (calendar.get(Calendar.MINUTE) * MILLIS_PER_MINUTE) / millisPerUnit; case Calendar.MINUTE: result += (calendar.get(Calendar.SECOND) * MILLIS_PER_SECOND) / millisPerUnit; case Calendar.SECOND: result += (calendar.get(Calendar.MILLISECOND) * 1) / millisPerUnit; break; case Calendar.MILLISECOND: break;//never useful default: throw new IllegalArgumentException("The fragment " + fragment + " is not supported"); } return result; } /** * Returns the number of millis of a datefield, if this is a constant value * * @param unit A Calendar field which is a valid unit for a fragment * @return number of millis * @throws IllegalArgumentException if date can"t be represented in millisenconds * @since 2.4 */ private static long getMillisPerUnit(int unit) { long result = Long.MAX_VALUE; switch (unit) { case Calendar.DAY_OF_YEAR: case Calendar.DATE: result = MILLIS_PER_DAY; break; case Calendar.HOUR_OF_DAY: result = MILLIS_PER_HOUR; break; case Calendar.MINUTE: result = MILLIS_PER_MINUTE; break; case Calendar.SECOND: result = MILLIS_PER_SECOND; break; case Calendar.MILLISECOND: result = 1; break; default: throw new IllegalArgumentException("The unit " + unit + " cannot be represented is milleseconds"); } return result; }
}
</source>
Returns the number of hours within the fragment.
<source lang="java">
import java.util.Calendar; import java.util.Date; import java.util.Iterator; import java.util.TimeZone;
/**
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
/**
A suite of utilities surrounding the use of the * {@link java.util.Calendar} and {@link java.util.Date} object.
**
DateUtils contains a lot of common methods considering manipulations * of Dates or Calendars. Some methods require some extra explanation. * The truncate and round methods could be considered the Math.floor(), * Math.ceil() or Math.round versions for dates * This way date-fields will be ignored in bottom-up order. * As a complement to these methods we"ve introduced some fragment-methods. * With these methods the Date-fields will be ignored in top-down order. * Since a date without a year is not a valid date, you have to decide in what * kind of date-field you want your result, for instance milliseconds or days. *
* * * * @author * @author Phil Steitz * @author Robert Scholte * @since 2.0 * @version $Id: DateUtils.java 634096 2008-03-06 00:58:11Z niallp $ */
public class Main {
/**
* The UTC time zone (often referred to as GMT).
*/
public static final TimeZone UTC_TIME_ZONE = TimeZone.getTimeZone("GMT");
/**
* Number of milliseconds in a standard second.
* @since 2.1
*/
public static final long MILLIS_PER_SECOND = 1000;
/**
* Number of milliseconds in a standard minute.
* @since 2.1
*/
public static final long MILLIS_PER_MINUTE = 60 * MILLIS_PER_SECOND;
/**
* Number of milliseconds in a standard hour.
* @since 2.1
*/
public static final long MILLIS_PER_HOUR = 60 * MILLIS_PER_MINUTE;
/**
* Number of milliseconds in a standard day.
* @since 2.1
*/
public static final long MILLIS_PER_DAY = 24 * MILLIS_PER_HOUR;
/**
* This is half a month, so this represents whether a date is in the top
* or bottom half of the month.
*/
public final static int SEMI_MONTH = 1001;
private static final int[][] fields = {
{Calendar.MILLISECOND},
{Calendar.SECOND},
{Calendar.MINUTE},
{Calendar.HOUR_OF_DAY, Calendar.HOUR},
{Calendar.DATE, Calendar.DAY_OF_MONTH, Calendar.AM_PM
/* Calendar.DAY_OF_YEAR, Calendar.DAY_OF_WEEK, Calendar.DAY_OF_WEEK_IN_MONTH */
},
{Calendar.MONTH, DateUtils.SEMI_MONTH},
{Calendar.YEAR},
{Calendar.ERA}};
/**
* A week range, starting on Sunday.
*/
public final static int RANGE_WEEK_SUNDAY = 1;
/**
* A week range, starting on Monday.
*/
public final static int RANGE_WEEK_MONDAY = 2;
/**
* A week range, starting on the day focused.
*/
public final static int RANGE_WEEK_RELATIVE = 3;
/**
* A week range, centered around the day focused.
*/
public final static int RANGE_WEEK_CENTER = 4;
/**
* A month range, the week starting on Sunday.
*/
public final static int RANGE_MONTH_SUNDAY = 5;
/**
* A month range, the week starting on Monday.
*/
public final static int RANGE_MONTH_MONDAY = 6;
/**
* Returns the number of hours within the * fragment. All datefields greater than the fragment will be ignored.
**
Asking the hours of any date will only return the number of hours * of the current day (resulting in a number between 0 and 23). This * method will retrieve the number of hours for any fragment. * For example, if you want to calculate the number of hours past this month, * your fragment is Calendar.MONTH. The result will be all hours of the * past day(s).
**
Valid fragments are: Calendar.YEAR, Calendar.MONTH, both * Calendar.DAY_OF_YEAR and Calendar.DATE, Calendar.HOUR_OF_DAY, * Calendar.MINUTE, Calendar.SECOND and Calendar.MILLISECOND * A fragment less than or equal to a HOUR field will return 0.
**
*
-
*
- January 1, 2008 7:15:10.538 with Calendar.DAY_OF_YEAR as fragment will return 7 * (equivalent to deprecated date.getHours()) *
- January 6, 2008 7:15:10.538 with Calendar.DAY_OF_YEAR as fragment will return 7 * (equivalent to deprecated date.getHours()) *
- January 1, 2008 7:15:10.538 with Calendar.MONTH as fragment will return 7 *
- January 6, 2008 7:15:10.538 with Calendar.MONTH as fragment will return 127 (5*24 + 7) *
- January 16, 2008 7:15:10.538 with Calendar.MILLISECOND as fragment will return 0 * (a millisecond cannot be split in hours) *
* * @param date the date to work with, not null * @param fragment the Calendar field part of date to calculate * @return number of hours within the fragment of date * @throws IllegalArgumentException if the date isnullor * fragment is not supported * @since 2.4 */ public static long getFragmentInHours(Date date, int fragment) { return getFragment(date, fragment, Calendar.HOUR_OF_DAY); } /** * Date-version for fragment-calculation in any unit * * @param date the date to work with, not null * @param fragment the Calendar field part of date to calculate * @param unit Calendar field defining the unit * @return number of units within the fragment of the date * @throws IllegalArgumentException if the date isnullor * fragment is not supported * @since 2.4 */ private static long getFragment(Date date, int fragment, int unit) { if(date == null) { throw new IllegalArgumentException("The date must not be null"); } Calendar calendar = Calendar.getInstance(); calendar.setTime(date); return getFragment(calendar, fragment, unit); } /** * Calendar-version for fragment-calculation in any unit * * @param calendar the calendar to work with, not null * @param fragment the Calendar field part of calendar to calculate * @param unit Calendar field defining the unit * @return number of units within the fragment of the calendar * @throws IllegalArgumentException if the date isnullor * fragment is not supported * @since 2.4 */ private static long getFragment(Calendar calendar, int fragment, int unit) { if(calendar == null) { throw new IllegalArgumentException("The date must not be null"); } long millisPerUnit = getMillisPerUnit(unit); long result = 0; // Fragments bigger than a day require a breakdown to days switch (fragment) { case Calendar.YEAR: result += (calendar.get(Calendar.DAY_OF_YEAR) * MILLIS_PER_DAY) / millisPerUnit; break; case Calendar.MONTH: result += (calendar.get(Calendar.DAY_OF_MONTH) * MILLIS_PER_DAY) / millisPerUnit; break; } switch (fragment) { // Number of days already calculated for these cases case Calendar.YEAR: case Calendar.MONTH: // The rest of the valid cases case Calendar.DAY_OF_YEAR: case Calendar.DATE: result += (calendar.get(Calendar.HOUR_OF_DAY) * MILLIS_PER_HOUR) / millisPerUnit; case Calendar.HOUR_OF_DAY: result += (calendar.get(Calendar.MINUTE) * MILLIS_PER_MINUTE) / millisPerUnit; case Calendar.MINUTE: result += (calendar.get(Calendar.SECOND) * MILLIS_PER_SECOND) / millisPerUnit; case Calendar.SECOND: result += (calendar.get(Calendar.MILLISECOND) * 1) / millisPerUnit; break; case Calendar.MILLISECOND: break;//never useful default: throw new IllegalArgumentException("The fragment " + fragment + " is not supported"); } return result; } /** * Returns the number of millis of a datefield, if this is a constant value * * @param unit A Calendar field which is a valid unit for a fragment * @return number of millis * @throws IllegalArgumentException if date can"t be represented in millisenconds * @since 2.4 */ private static long getMillisPerUnit(int unit) { long result = Long.MAX_VALUE; switch (unit) { case Calendar.DAY_OF_YEAR: case Calendar.DATE: result = MILLIS_PER_DAY; break; case Calendar.HOUR_OF_DAY: result = MILLIS_PER_HOUR; break; case Calendar.MINUTE: result = MILLIS_PER_MINUTE; break; case Calendar.SECOND: result = MILLIS_PER_SECOND; break; case Calendar.MILLISECOND: result = 1; break; default: throw new IllegalArgumentException("The unit " + unit + " cannot be represented is milleseconds"); } return result; }
}
</source>
Returns the number of milliseconds within the fragment.
<source lang="java">
import java.util.Calendar; import java.util.Date; import java.util.Iterator; import java.util.TimeZone;
/**
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
/**
A suite of utilities surrounding the use of the * {@link java.util.Calendar} and {@link java.util.Date} object.
**
DateUtils contains a lot of common methods considering manipulations * of Dates or Calendars. Some methods require some extra explanation. * The truncate and round methods could be considered the Math.floor(), * Math.ceil() or Math.round versions for dates * This way date-fields will be ignored in bottom-up order. * As a complement to these methods we"ve introduced some fragment-methods. * With these methods the Date-fields will be ignored in top-down order. * Since a date without a year is not a valid date, you have to decide in what * kind of date-field you want your result, for instance milliseconds or days. *
* * * * @author * @author Phil Steitz * @author Robert Scholte * @since 2.0 * @version $Id: DateUtils.java 634096 2008-03-06 00:58:11Z niallp $ */
public class Main {
/**
* The UTC time zone (often referred to as GMT).
*/
public static final TimeZone UTC_TIME_ZONE = TimeZone.getTimeZone("GMT");
/**
* Number of milliseconds in a standard second.
* @since 2.1
*/
public static final long MILLIS_PER_SECOND = 1000;
/**
* Number of milliseconds in a standard minute.
* @since 2.1
*/
public static final long MILLIS_PER_MINUTE = 60 * MILLIS_PER_SECOND;
/**
* Number of milliseconds in a standard hour.
* @since 2.1
*/
public static final long MILLIS_PER_HOUR = 60 * MILLIS_PER_MINUTE;
/**
* Number of milliseconds in a standard day.
* @since 2.1
*/
public static final long MILLIS_PER_DAY = 24 * MILLIS_PER_HOUR;
/**
* This is half a month, so this represents whether a date is in the top
* or bottom half of the month.
*/
public final static int SEMI_MONTH = 1001;
private static final int[][] fields = {
{Calendar.MILLISECOND},
{Calendar.SECOND},
{Calendar.MINUTE},
{Calendar.HOUR_OF_DAY, Calendar.HOUR},
{Calendar.DATE, Calendar.DAY_OF_MONTH, Calendar.AM_PM
/* Calendar.DAY_OF_YEAR, Calendar.DAY_OF_WEEK, Calendar.DAY_OF_WEEK_IN_MONTH */
},
{Calendar.MONTH, DateUtils.SEMI_MONTH},
{Calendar.YEAR},
{Calendar.ERA}};
/**
* A week range, starting on Sunday.
*/
public final static int RANGE_WEEK_SUNDAY = 1;
/**
* A week range, starting on Monday.
*/
public final static int RANGE_WEEK_MONDAY = 2;
/**
* A week range, starting on the day focused.
*/
public final static int RANGE_WEEK_RELATIVE = 3;
/**
* A week range, centered around the day focused.
*/
public final static int RANGE_WEEK_CENTER = 4;
/**
* A month range, the week starting on Sunday.
*/
public final static int RANGE_MONTH_SUNDAY = 5;
/**
* A month range, the week starting on Monday.
*/
public final static int RANGE_MONTH_MONDAY = 6;
/***
Returns the number of milliseconds within the * fragment. All datefields greater than the fragment will be ignored.
**
Asking the milliseconds of any date will only return the number of milliseconds * of the current second (resulting in a number between 0 and 999). This * method will retrieve the number of milliseconds for any fragment. * For example, if you want to calculate the number of seconds past today, * your fragment is Calendar.DATE or Calendar.DAY_OF_YEAR. The result will * be all seconds of the past hour(s), minutes(s) and second(s).
**
Valid fragments are: Calendar.YEAR, Calendar.MONTH, both * Calendar.DAY_OF_YEAR and Calendar.DATE, Calendar.HOUR_OF_DAY, * Calendar.MINUTE, Calendar.SECOND and Calendar.MILLISECOND * A fragment less than or equal to a MILLISECOND field will return 0.
**
*
-
*
- January 1, 2008 7:15:10.538 with Calendar.SECOND as fragment will return 538 * (equivalent to calendar.get(Calendar.MILLISECOND)) *
- January 6, 2008 7:15:10.538 with Calendar.SECOND as fragment will return 538 * (equivalent to calendar.get(Calendar.MILLISECOND)) *
- January 6, 2008 7:15:10.538 with Calendar.MINUTE as fragment will return 10538 * (10*1000 + 538) *
- January 16, 2008 7:15:10.538 with Calendar.MILLISECOND as fragment will return 0 * (a millisecond cannot be split in milliseconds) *
*
* @param calendar the calendar to work with, not null
* @param fragment the Calendar field part of calendar to calculate
* @return number of milliseconds within the fragment of date
* @throws IllegalArgumentException if the date is null or
* fragment is not supported
* @since 2.4
*/
public static long getFragmentInMilliseconds(Calendar calendar, int fragment) {
return getFragment(calendar, fragment, Calendar.MILLISECOND);
}
/** * Date-version for fragment-calculation in any unit * * @param date the date to work with, not null * @param fragment the Calendar field part of date to calculate * @param unit Calendar field defining the unit * @return number of units within the fragment of the date * @throws IllegalArgumentException if the date isnullor * fragment is not supported * @since 2.4 */ private static long getFragment(Date date, int fragment, int unit) { if(date == null) { throw new IllegalArgumentException("The date must not be null"); } Calendar calendar = Calendar.getInstance(); calendar.setTime(date); return getFragment(calendar, fragment, unit); } /** * Calendar-version for fragment-calculation in any unit * * @param calendar the calendar to work with, not null * @param fragment the Calendar field part of calendar to calculate * @param unit Calendar field defining the unit * @return number of units within the fragment of the calendar * @throws IllegalArgumentException if the date isnullor * fragment is not supported * @since 2.4 */ private static long getFragment(Calendar calendar, int fragment, int unit) { if(calendar == null) { throw new IllegalArgumentException("The date must not be null"); } long millisPerUnit = getMillisPerUnit(unit); long result = 0; // Fragments bigger than a day require a breakdown to days switch (fragment) { case Calendar.YEAR: result += (calendar.get(Calendar.DAY_OF_YEAR) * MILLIS_PER_DAY) / millisPerUnit; break; case Calendar.MONTH: result += (calendar.get(Calendar.DAY_OF_MONTH) * MILLIS_PER_DAY) / millisPerUnit; break; } switch (fragment) { // Number of days already calculated for these cases case Calendar.YEAR: case Calendar.MONTH: // The rest of the valid cases case Calendar.DAY_OF_YEAR: case Calendar.DATE: result += (calendar.get(Calendar.HOUR_OF_DAY) * MILLIS_PER_HOUR) / millisPerUnit; case Calendar.HOUR_OF_DAY: result += (calendar.get(Calendar.MINUTE) * MILLIS_PER_MINUTE) / millisPerUnit; case Calendar.MINUTE: result += (calendar.get(Calendar.SECOND) * MILLIS_PER_SECOND) / millisPerUnit; case Calendar.SECOND: result += (calendar.get(Calendar.MILLISECOND) * 1) / millisPerUnit; break; case Calendar.MILLISECOND: break;//never useful default: throw new IllegalArgumentException("The fragment " + fragment + " is not supported"); } return result; } /** * Returns the number of millis of a datefield, if this is a constant value * * @param unit A Calendar field which is a valid unit for a fragment * @return number of millis * @throws IllegalArgumentException if date can"t be represented in millisenconds * @since 2.4 */ private static long getMillisPerUnit(int unit) { long result = Long.MAX_VALUE; switch (unit) { case Calendar.DAY_OF_YEAR: case Calendar.DATE: result = MILLIS_PER_DAY; break; case Calendar.HOUR_OF_DAY: result = MILLIS_PER_HOUR; break; case Calendar.MINUTE: result = MILLIS_PER_MINUTE; break; case Calendar.SECOND: result = MILLIS_PER_SECOND; break; case Calendar.MILLISECOND: result = 1; break; default: throw new IllegalArgumentException("The unit " + unit + " cannot be represented is milleseconds"); } return result; }
}
</source>
Returns the number of minutes within the fragment.
<source lang="java">
import java.util.Calendar; import java.util.Date; import java.util.Iterator; import java.util.TimeZone;
/**
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
/**
A suite of utilities surrounding the use of the * {@link java.util.Calendar} and {@link java.util.Date} object.
**
DateUtils contains a lot of common methods considering manipulations * of Dates or Calendars. Some methods require some extra explanation. * The truncate and round methods could be considered the Math.floor(), * Math.ceil() or Math.round versions for dates * This way date-fields will be ignored in bottom-up order. * As a complement to these methods we"ve introduced some fragment-methods. * With these methods the Date-fields will be ignored in top-down order. * Since a date without a year is not a valid date, you have to decide in what * kind of date-field you want your result, for instance milliseconds or days. *
* * * * @author * @author Phil Steitz * @author Robert Scholte * @since 2.0 * @version $Id: DateUtils.java 634096 2008-03-06 00:58:11Z niallp $ */
public class Main {
/**
* The UTC time zone (often referred to as GMT).
*/
public static final TimeZone UTC_TIME_ZONE = TimeZone.getTimeZone("GMT");
/**
* Number of milliseconds in a standard second.
* @since 2.1
*/
public static final long MILLIS_PER_SECOND = 1000;
/**
* Number of milliseconds in a standard minute.
* @since 2.1
*/
public static final long MILLIS_PER_MINUTE = 60 * MILLIS_PER_SECOND;
/**
* Number of milliseconds in a standard hour.
* @since 2.1
*/
public static final long MILLIS_PER_HOUR = 60 * MILLIS_PER_MINUTE;
/**
* Number of milliseconds in a standard day.
* @since 2.1
*/
public static final long MILLIS_PER_DAY = 24 * MILLIS_PER_HOUR;
/**
* This is half a month, so this represents whether a date is in the top
* or bottom half of the month.
*/
public final static int SEMI_MONTH = 1001;
private static final int[][] fields = {
{Calendar.MILLISECOND},
{Calendar.SECOND},
{Calendar.MINUTE},
{Calendar.HOUR_OF_DAY, Calendar.HOUR},
{Calendar.DATE, Calendar.DAY_OF_MONTH, Calendar.AM_PM
/* Calendar.DAY_OF_YEAR, Calendar.DAY_OF_WEEK, Calendar.DAY_OF_WEEK_IN_MONTH */
},
{Calendar.MONTH, DateUtils.SEMI_MONTH},
{Calendar.YEAR},
{Calendar.ERA}};
/**
* A week range, starting on Sunday.
*/
public final static int RANGE_WEEK_SUNDAY = 1;
/**
* A week range, starting on Monday.
*/
public final static int RANGE_WEEK_MONDAY = 2;
/**
* A week range, starting on the day focused.
*/
public final static int RANGE_WEEK_RELATIVE = 3;
/**
* A week range, centered around the day focused.
*/
public final static int RANGE_WEEK_CENTER = 4;
/**
* A month range, the week starting on Sunday.
*/
public final static int RANGE_MONTH_SUNDAY = 5;
/**
* A month range, the week starting on Monday.
*/
public final static int RANGE_MONTH_MONDAY = 6;
/**
* Returns the number of minutes within the * fragment. All datefields greater than the fragment will be ignored.
**
Asking the minutes of any date will only return the number of minutes * of the current hour (resulting in a number between 0 and 59). This * method will retrieve the number of minutes for any fragment. * For example, if you want to calculate the number of minutes past this month, * your fragment is Calendar.MONTH. The result will be all minutes of the * past day(s) and hour(s).
**
Valid fragments are: Calendar.YEAR, Calendar.MONTH, both * Calendar.DAY_OF_YEAR and Calendar.DATE, Calendar.HOUR_OF_DAY, * Calendar.MINUTE, Calendar.SECOND and Calendar.MILLISECOND * A fragment less than or equal to a MINUTE field will return 0.
**
*
-
*
- January 1, 2008 7:15:10.538 with Calendar.HOUR_OF_DAY as fragment will return 15 * (equivalent to deprecated date.getMinutes()) *
- January 6, 2008 7:15:10.538 with Calendar.HOUR_OF_DAY as fragment will return 15 * (equivalent to deprecated date.getMinutes()) *
- January 1, 2008 7:15:10.538 with Calendar.MONTH as fragment will return 15 *
- January 6, 2008 7:15:10.538 with Calendar.MONTH as fragment will return 435 (7*60 + 15) *
- January 16, 2008 7:15:10.538 with Calendar.MILLISECOND as fragment will return 0 * (a millisecond cannot be split in minutes) *
* * @param date the date to work with, not null * @param fragment the Calendar field part of date to calculate * @return number of minutes within the fragment of date * @throws IllegalArgumentException if the date isnullor * fragment is not supported * @since 2.4 */ public static long getFragmentInMinutes(Date date, int fragment) { return getFragment(date, fragment, Calendar.MINUTE); } /** * Date-version for fragment-calculation in any unit * * @param date the date to work with, not null * @param fragment the Calendar field part of date to calculate * @param unit Calendar field defining the unit * @return number of units within the fragment of the date * @throws IllegalArgumentException if the date isnullor * fragment is not supported * @since 2.4 */ private static long getFragment(Date date, int fragment, int unit) { if(date == null) { throw new IllegalArgumentException("The date must not be null"); } Calendar calendar = Calendar.getInstance(); calendar.setTime(date); return getFragment(calendar, fragment, unit); } /** * Calendar-version for fragment-calculation in any unit * * @param calendar the calendar to work with, not null * @param fragment the Calendar field part of calendar to calculate * @param unit Calendar field defining the unit * @return number of units within the fragment of the calendar * @throws IllegalArgumentException if the date isnullor * fragment is not supported * @since 2.4 */ private static long getFragment(Calendar calendar, int fragment, int unit) { if(calendar == null) { throw new IllegalArgumentException("The date must not be null"); } long millisPerUnit = getMillisPerUnit(unit); long result = 0; // Fragments bigger than a day require a breakdown to days switch (fragment) { case Calendar.YEAR: result += (calendar.get(Calendar.DAY_OF_YEAR) * MILLIS_PER_DAY) / millisPerUnit; break; case Calendar.MONTH: result += (calendar.get(Calendar.DAY_OF_MONTH) * MILLIS_PER_DAY) / millisPerUnit; break; } switch (fragment) { // Number of days already calculated for these cases case Calendar.YEAR: case Calendar.MONTH: // The rest of the valid cases case Calendar.DAY_OF_YEAR: case Calendar.DATE: result += (calendar.get(Calendar.HOUR_OF_DAY) * MILLIS_PER_HOUR) / millisPerUnit; case Calendar.HOUR_OF_DAY: result += (calendar.get(Calendar.MINUTE) * MILLIS_PER_MINUTE) / millisPerUnit; case Calendar.MINUTE: result += (calendar.get(Calendar.SECOND) * MILLIS_PER_SECOND) / millisPerUnit; case Calendar.SECOND: result += (calendar.get(Calendar.MILLISECOND) * 1) / millisPerUnit; break; case Calendar.MILLISECOND: break;//never useful default: throw new IllegalArgumentException("The fragment " + fragment + " is not supported"); } return result; } /** * Returns the number of millis of a datefield, if this is a constant value * * @param unit A Calendar field which is a valid unit for a fragment * @return number of millis * @throws IllegalArgumentException if date can"t be represented in millisenconds * @since 2.4 */ private static long getMillisPerUnit(int unit) { long result = Long.MAX_VALUE; switch (unit) { case Calendar.DAY_OF_YEAR: case Calendar.DATE: result = MILLIS_PER_DAY; break; case Calendar.HOUR_OF_DAY: result = MILLIS_PER_HOUR; break; case Calendar.MINUTE: result = MILLIS_PER_MINUTE; break; case Calendar.SECOND: result = MILLIS_PER_SECOND; break; case Calendar.MILLISECOND: result = 1; break; default: throw new IllegalArgumentException("The unit " + unit + " cannot be represented is milleseconds"); } return result; }
}
</source>
Returns the number of seconds within the fragment.
<source lang="java">
import java.util.Calendar; import java.util.Date; import java.util.Iterator; import java.util.TimeZone;
/**
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
/**
A suite of utilities surrounding the use of the * {@link java.util.Calendar} and {@link java.util.Date} object.
**
DateUtils contains a lot of common methods considering manipulations * of Dates or Calendars. Some methods require some extra explanation. * The truncate and round methods could be considered the Math.floor(), * Math.ceil() or Math.round versions for dates * This way date-fields will be ignored in bottom-up order. * As a complement to these methods we"ve introduced some fragment-methods. * With these methods the Date-fields will be ignored in top-down order. * Since a date without a year is not a valid date, you have to decide in what * kind of date-field you want your result, for instance milliseconds or days. *
* * * * @author * @author Phil Steitz * @author Robert Scholte * @since 2.0 * @version $Id: DateUtils.java 634096 2008-03-06 00:58:11Z niallp $ */
public class Main {
/**
* The UTC time zone (often referred to as GMT).
*/
public static final TimeZone UTC_TIME_ZONE = TimeZone.getTimeZone("GMT");
/**
* Number of milliseconds in a standard second.
* @since 2.1
*/
public static final long MILLIS_PER_SECOND = 1000;
/**
* Number of milliseconds in a standard minute.
* @since 2.1
*/
public static final long MILLIS_PER_MINUTE = 60 * MILLIS_PER_SECOND;
/**
* Number of milliseconds in a standard hour.
* @since 2.1
*/
public static final long MILLIS_PER_HOUR = 60 * MILLIS_PER_MINUTE;
/**
* Number of milliseconds in a standard day.
* @since 2.1
*/
public static final long MILLIS_PER_DAY = 24 * MILLIS_PER_HOUR;
/**
* This is half a month, so this represents whether a date is in the top
* or bottom half of the month.
*/
public final static int SEMI_MONTH = 1001;
private static final int[][] fields = {
{Calendar.MILLISECOND},
{Calendar.SECOND},
{Calendar.MINUTE},
{Calendar.HOUR_OF_DAY, Calendar.HOUR},
{Calendar.DATE, Calendar.DAY_OF_MONTH, Calendar.AM_PM
/* Calendar.DAY_OF_YEAR, Calendar.DAY_OF_WEEK, Calendar.DAY_OF_WEEK_IN_MONTH */
},
{Calendar.MONTH, DateUtils.SEMI_MONTH},
{Calendar.YEAR},
{Calendar.ERA}};
/**
* A week range, starting on Sunday.
*/
public final static int RANGE_WEEK_SUNDAY = 1;
/**
* A week range, starting on Monday.
*/
public final static int RANGE_WEEK_MONDAY = 2;
/**
* A week range, starting on the day focused.
*/
public final static int RANGE_WEEK_RELATIVE = 3;
/**
* A week range, centered around the day focused.
*/
public final static int RANGE_WEEK_CENTER = 4;
/**
* A month range, the week starting on Sunday.
*/
public final static int RANGE_MONTH_SUNDAY = 5;
/**
* A month range, the week starting on Monday.
*/
public final static int RANGE_MONTH_MONDAY = 6;
/**
* Returns the number of seconds within the * fragment. All datefields greater than the fragment will be ignored.
**
Asking the seconds of any date will only return the number of seconds * of the current minute (resulting in a number between 0 and 59). This * method will retrieve the number of seconds for any fragment. * For example, if you want to calculate the number of seconds past today, * your fragment is Calendar.DATE or Calendar.DAY_OF_YEAR. The result will * be all seconds of the past hour(s) and minutes(s).
**
Valid fragments are: Calendar.YEAR, Calendar.MONTH, both * Calendar.DAY_OF_YEAR and Calendar.DATE, Calendar.HOUR_OF_DAY, * Calendar.MINUTE, Calendar.SECOND and Calendar.MILLISECOND * A fragment less than or equal to a SECOND field will return 0.
**
*
-
*
- January 1, 2008 7:15:10.538 with Calendar.MINUTE as fragment will return 10 * (equivalent to deprecated date.getSeconds()) *
- January 6, 2008 7:15:10.538 with Calendar.MINUTE as fragment will return 10 * (equivalent to deprecated date.getSeconds()) *
- January 6, 2008 7:15:10.538 with Calendar.DAY_OF_YEAR as fragment will return 26110 * (7*3600 + 15*60 + 10) *
- January 16, 2008 7:15:10.538 with Calendar.MILLISECOND as fragment will return 0 * (a millisecond cannot be split in seconds) *
* * @param date the date to work with, not null * @param fragment the Calendar field part of date to calculate * @return number of seconds within the fragment of date * @throws IllegalArgumentException if the date isnullor * fragment is not supported * @since 2.4 */ public static long getFragmentInSeconds(Date date, int fragment) { return getFragment(date, fragment, Calendar.SECOND); } /** * Date-version for fragment-calculation in any unit * * @param date the date to work with, not null * @param fragment the Calendar field part of date to calculate * @param unit Calendar field defining the unit * @return number of units within the fragment of the date * @throws IllegalArgumentException if the date isnullor * fragment is not supported * @since 2.4 */ private static long getFragment(Date date, int fragment, int unit) { if(date == null) { throw new IllegalArgumentException("The date must not be null"); } Calendar calendar = Calendar.getInstance(); calendar.setTime(date); return getFragment(calendar, fragment, unit); } /** * Calendar-version for fragment-calculation in any unit * * @param calendar the calendar to work with, not null * @param fragment the Calendar field part of calendar to calculate * @param unit Calendar field defining the unit * @return number of units within the fragment of the calendar * @throws IllegalArgumentException if the date isnullor * fragment is not supported * @since 2.4 */ private static long getFragment(Calendar calendar, int fragment, int unit) { if(calendar == null) { throw new IllegalArgumentException("The date must not be null"); } long millisPerUnit = getMillisPerUnit(unit); long result = 0; // Fragments bigger than a day require a breakdown to days switch (fragment) { case Calendar.YEAR: result += (calendar.get(Calendar.DAY_OF_YEAR) * MILLIS_PER_DAY) / millisPerUnit; break; case Calendar.MONTH: result += (calendar.get(Calendar.DAY_OF_MONTH) * MILLIS_PER_DAY) / millisPerUnit; break; } switch (fragment) { // Number of days already calculated for these cases case Calendar.YEAR: case Calendar.MONTH: // The rest of the valid cases case Calendar.DAY_OF_YEAR: case Calendar.DATE: result += (calendar.get(Calendar.HOUR_OF_DAY) * MILLIS_PER_HOUR) / millisPerUnit; case Calendar.HOUR_OF_DAY: result += (calendar.get(Calendar.MINUTE) * MILLIS_PER_MINUTE) / millisPerUnit; case Calendar.MINUTE: result += (calendar.get(Calendar.SECOND) * MILLIS_PER_SECOND) / millisPerUnit; case Calendar.SECOND: result += (calendar.get(Calendar.MILLISECOND) * 1) / millisPerUnit; break; case Calendar.MILLISECOND: break;//never useful default: throw new IllegalArgumentException("The fragment " + fragment + " is not supported"); } return result; } /** * Returns the number of millis of a datefield, if this is a constant value * * @param unit A Calendar field which is a valid unit for a fragment * @return number of millis * @throws IllegalArgumentException if date can"t be represented in millisenconds * @since 2.4 */ private static long getMillisPerUnit(int unit) { long result = Long.MAX_VALUE; switch (unit) { case Calendar.DAY_OF_YEAR: case Calendar.DATE: result = MILLIS_PER_DAY; break; case Calendar.HOUR_OF_DAY: result = MILLIS_PER_HOUR; break; case Calendar.MINUTE: result = MILLIS_PER_MINUTE; break; case Calendar.SECOND: result = MILLIS_PER_SECOND; break; case Calendar.MILLISECOND: result = 1; break; default: throw new IllegalArgumentException("The unit " + unit + " cannot be represented is milleseconds"); } return result; }
}
</source>
Returns true if endDate is after startDate or if startDate equals endDate.
<source lang="java">
/*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. The ASF licenses this file to You * under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. For additional information regarding * copyright in this work, please see the NOTICE file in the top level * directory of this distribution. */
import java.util.Date; public class Utils {
/**
* Returns true if endDate is after startDate or if startDate equals endDate.
* Returns false if either value is null. If equalOK, returns true if the
* dates are equal.
**/
public static boolean isValidDateRange(Date startDate, Date endDate, boolean equalOK) {
// false if either value is null
if (startDate == null || endDate == null) { return false; }
if (equalOK) {
// true if they are equal
if (startDate.equals(endDate)) { return true; }
}
// true if endDate after startDate
if (endDate.after(startDate)) { return true; }
return false;
}
}
</source>
Roll the days forward or backward
<source lang="java">
/*
* Copyright Javelin Software, All rights reserved. */
import java.util.*; import java.text.*; /**
* The DateUtil is used as a Utility Class for Dates. * * @author Robin Sharp */
public class DateUtil {
public final static long SECOND_MILLIS = 1000;
public final static long MINUTE_MILLIS = SECOND_MILLIS*60;
public final static long HOUR_MILLIS = MINUTE_MILLIS*60;
public final static long DAY_MILLIS = HOUR_MILLIS*24;
public final static long YEAR_MILLIS = DAY_MILLIS*365;
public static DateFormat OUT_DATE_FORMAT = new SimpleDateFormat("dd/MM/yyyy");
public static DateFormat OUT_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat OUT_DATETIME_FORMAT = new SimpleDateFormat("d/M/yyyy H:mm:ss");
public static DateFormat OUT_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat IN_DATE_FORMAT = new SimpleDateFormat("d/M/yy");
public static DateFormat IN_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat IN_DATETIME_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss");
public static DateFormat IN_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat DATE_TIME_FORMAT= new SimpleDateFormat( "yyyyMMddkkmmss" );
public static Calendar calendar = new GregorianCalendar();
static
{
IN_DATE_FORMAT.setLenient(false);
IN_TIME_FORMAT.setLenient(false);
IN_DATETIME_FORMAT.setLenient(false);
}
/**
* Create a new DateTime. To the last second. This will not create any
* extra-millis-seconds, which may cause bugs when writing to stores such as
* databases that round milli-seconds up and down.
*/
public static java.util.Date newDateTime()
{
return new java.util.Date( (System.currentTimeMillis()/SECOND_MILLIS)*SECOND_MILLIS);
}
/**
* Create a new Date. To the last day.
*/
public static java.sql.Date newDate()
{
return new java.sql.Date( (System.currentTimeMillis()/DAY_MILLIS)*DAY_MILLIS);
}
/**
* Create a new Time, with no date component.
*/
public static java.sql.Time newTime()
{
return new java.sql.Time( System.currentTimeMillis()%DAY_MILLIS);
}
/**
* Create a new Timestamp.
*/
public static java.sql.Timestamp newTimestamp()
{
return new java.sql.Timestamp( System.currentTimeMillis() );
}
/**
* Get the seconds difference
*/
public static int secondsDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/SECOND_MILLIS) - (earlierDate.getTime()/SECOND_MILLIS));
}
/**
* Get the minutes difference
*/
public static int minutesDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/MINUTE_MILLIS) - (earlierDate.getTime()/MINUTE_MILLIS));
}
/**
* Get the hours difference
*/
public static int hoursDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/HOUR_MILLIS) - (earlierDate.getTime()/HOUR_MILLIS));
}
/**
* Get the days difference
*/
public static int daysDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/DAY_MILLIS) - (earlierDate.getTime()/DAY_MILLIS));
}
/**
* Roll the java.util.Time forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Time rollTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Time(gc.getTime().getTime());
}
/**
* Roll the java.util.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.util.Date rollDateTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.util.Date(gc.getTime().getTime());
}
/**
* Roll the java.sql.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Date rollDate( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Date(gc.getTime().getTime());
}
/**
* Roll the years forward or backward.
* @param startDate - The start date
* @param years - Negative to rollbackwards.
*/
public static java.sql.Date rollYears( java.util.Date startDate, int years )
{
return rollDate( startDate, Calendar.YEAR, years );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param months - Negative to rollbackwards.
*/
public static java.sql.Date rollMonths( java.util.Date startDate, int months )
{
return rollDate( startDate, Calendar.MONTH, months );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param days - Negative to rollbackwards.
*/
public static java.sql.Date rollDays( java.util.Date startDate, int days )
{
return rollDate( startDate, Calendar.DATE, days );
}
/**
* Checks the day, month and year are equal.
*/
public static boolean dateEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear();
}
/**
* Checks the hour, minute and second are equal.
*/
public static boolean timeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Checks the second, hour, month, day, month and year are equal.
*/
public static boolean dateTimeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear() &&
d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Convert an Object of type Classs to an Object.
*/
public static Object toObject( Class clazz, Object value ) throws ParseException
{
if( value == null ) return null;
if( clazz == null ) return value;
if( java.sql.Date.class.isAssignableFrom( clazz ) ) return toDate( value );
if( java.sql.Time.class.isAssignableFrom( clazz ) ) return toTime( value );
if( java.sql.Timestamp.class.isAssignableFrom( clazz ) ) return toTimestamp( value );
if( java.util.Date.class.isAssignableFrom( clazz ) ) return toDateTime( value );
return value;
}
/**
* Convert an Object to a DateTime, without an Exception
*/
public static java.util.Date getDateTime( Object value )
{
try
{
return toDateTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a DateTime.
*/
public static java.util.Date toDateTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.util.Date ) return (java.util.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return IN_DATETIME_FORMAT.parse( (String)value );
}
return IN_DATETIME_FORMAT.parse( value.toString() );
}
/**
* Convert an Object to a Date, without an Exception
*/
public static java.sql.Date getDate( Object value )
{
try
{
return toDate( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Date.
*/
public static java.sql.Date toDate( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Date ) return (java.sql.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Date( IN_DATE_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Date( IN_DATE_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Time, without an Exception
*/
public static java.sql.Time getTime( Object value )
{
try
{
return toTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Time.
*/
public static java.sql.Time toTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Time ) return (java.sql.Time)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Time( IN_TIME_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Time( IN_TIME_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Timestamp, without an Exception
*/
public static java.sql.Timestamp getTimestamp( Object value )
{
try
{
return toTimestamp( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Timestamp.
*/
public static java.sql.Timestamp toTimestamp( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Timestamp ) return (java.sql.Timestamp)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Tells you if the date part of a datetime is in a certain time range.
*/
public static boolean isTimeInRange( java.sql.Time start, java.sql.Time end, java.util.Date d )
{
d=new java.sql.Time(d.getHours(),d.getMinutes(),d.getSeconds());
if (start==null || end==null)
{
return false;
}
if (start.before(end)&&(!(d.after(start)&&d.before(end))))
{
return false;
}
if (end.before(start)&&(!(d.after(end)||d.before(start))))
{
return false;
}
return true;
}
public static int getYear( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.YEAR );
}
public static int getMonth( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MONTH );
}
public static int getDate( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.DATE );
}
public static int getHour( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.HOUR );
}
public static int getMinute( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MINUTE );
}
public static int getSeconds( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.SECOND );
}
public static int getMillisecond( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MILLISECOND );
}
/**
* Convert an Object to a String using Dates
*/
public static String toString( Object date )
{
if( date == null ) return null;
if( java.sql.Timestamp.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIMESTAMP_FORMAT.format( date );
}
if( java.sql.Time.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIME_FORMAT.format( date );
}
if( java.sql.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATE_FORMAT.format( date );
}
if( java.util.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATETIME_FORMAT.format( date );
}
throw new IllegalArgumentException( "Unsupported type " + date.getClass() );
}
}
</source>
Roll the java.sql.Date forward or backward
<source lang="java">
/*
* Copyright Javelin Software, All rights reserved. */
import java.util.*; import java.text.*; /**
* The DateUtil is used as a Utility Class for Dates. * * @author Robin Sharp */
public class DateUtil {
public final static long SECOND_MILLIS = 1000;
public final static long MINUTE_MILLIS = SECOND_MILLIS*60;
public final static long HOUR_MILLIS = MINUTE_MILLIS*60;
public final static long DAY_MILLIS = HOUR_MILLIS*24;
public final static long YEAR_MILLIS = DAY_MILLIS*365;
public static DateFormat OUT_DATE_FORMAT = new SimpleDateFormat("dd/MM/yyyy");
public static DateFormat OUT_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat OUT_DATETIME_FORMAT = new SimpleDateFormat("d/M/yyyy H:mm:ss");
public static DateFormat OUT_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat IN_DATE_FORMAT = new SimpleDateFormat("d/M/yy");
public static DateFormat IN_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat IN_DATETIME_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss");
public static DateFormat IN_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat DATE_TIME_FORMAT= new SimpleDateFormat( "yyyyMMddkkmmss" );
public static Calendar calendar = new GregorianCalendar();
static
{
IN_DATE_FORMAT.setLenient(false);
IN_TIME_FORMAT.setLenient(false);
IN_DATETIME_FORMAT.setLenient(false);
}
/**
* Create a new DateTime. To the last second. This will not create any
* extra-millis-seconds, which may cause bugs when writing to stores such as
* databases that round milli-seconds up and down.
*/
public static java.util.Date newDateTime()
{
return new java.util.Date( (System.currentTimeMillis()/SECOND_MILLIS)*SECOND_MILLIS);
}
/**
* Create a new Date. To the last day.
*/
public static java.sql.Date newDate()
{
return new java.sql.Date( (System.currentTimeMillis()/DAY_MILLIS)*DAY_MILLIS);
}
/**
* Create a new Time, with no date component.
*/
public static java.sql.Time newTime()
{
return new java.sql.Time( System.currentTimeMillis()%DAY_MILLIS);
}
/**
* Create a new Timestamp.
*/
public static java.sql.Timestamp newTimestamp()
{
return new java.sql.Timestamp( System.currentTimeMillis() );
}
/**
* Get the seconds difference
*/
public static int secondsDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/SECOND_MILLIS) - (earlierDate.getTime()/SECOND_MILLIS));
}
/**
* Get the minutes difference
*/
public static int minutesDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/MINUTE_MILLIS) - (earlierDate.getTime()/MINUTE_MILLIS));
}
/**
* Get the hours difference
*/
public static int hoursDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/HOUR_MILLIS) - (earlierDate.getTime()/HOUR_MILLIS));
}
/**
* Get the days difference
*/
public static int daysDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/DAY_MILLIS) - (earlierDate.getTime()/DAY_MILLIS));
}
/**
* Roll the java.util.Time forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Time rollTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Time(gc.getTime().getTime());
}
/**
* Roll the java.util.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.util.Date rollDateTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.util.Date(gc.getTime().getTime());
}
/**
* Roll the java.sql.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Date rollDate( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Date(gc.getTime().getTime());
}
/**
* Roll the years forward or backward.
* @param startDate - The start date
* @param years - Negative to rollbackwards.
*/
public static java.sql.Date rollYears( java.util.Date startDate, int years )
{
return rollDate( startDate, Calendar.YEAR, years );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param months - Negative to rollbackwards.
*/
public static java.sql.Date rollMonths( java.util.Date startDate, int months )
{
return rollDate( startDate, Calendar.MONTH, months );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param days - Negative to rollbackwards.
*/
public static java.sql.Date rollDays( java.util.Date startDate, int days )
{
return rollDate( startDate, Calendar.DATE, days );
}
/**
* Checks the day, month and year are equal.
*/
public static boolean dateEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear();
}
/**
* Checks the hour, minute and second are equal.
*/
public static boolean timeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Checks the second, hour, month, day, month and year are equal.
*/
public static boolean dateTimeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear() &&
d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Convert an Object of type Classs to an Object.
*/
public static Object toObject( Class clazz, Object value ) throws ParseException
{
if( value == null ) return null;
if( clazz == null ) return value;
if( java.sql.Date.class.isAssignableFrom( clazz ) ) return toDate( value );
if( java.sql.Time.class.isAssignableFrom( clazz ) ) return toTime( value );
if( java.sql.Timestamp.class.isAssignableFrom( clazz ) ) return toTimestamp( value );
if( java.util.Date.class.isAssignableFrom( clazz ) ) return toDateTime( value );
return value;
}
/**
* Convert an Object to a DateTime, without an Exception
*/
public static java.util.Date getDateTime( Object value )
{
try
{
return toDateTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a DateTime.
*/
public static java.util.Date toDateTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.util.Date ) return (java.util.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return IN_DATETIME_FORMAT.parse( (String)value );
}
return IN_DATETIME_FORMAT.parse( value.toString() );
}
/**
* Convert an Object to a Date, without an Exception
*/
public static java.sql.Date getDate( Object value )
{
try
{
return toDate( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Date.
*/
public static java.sql.Date toDate( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Date ) return (java.sql.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Date( IN_DATE_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Date( IN_DATE_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Time, without an Exception
*/
public static java.sql.Time getTime( Object value )
{
try
{
return toTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Time.
*/
public static java.sql.Time toTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Time ) return (java.sql.Time)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Time( IN_TIME_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Time( IN_TIME_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Timestamp, without an Exception
*/
public static java.sql.Timestamp getTimestamp( Object value )
{
try
{
return toTimestamp( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Timestamp.
*/
public static java.sql.Timestamp toTimestamp( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Timestamp ) return (java.sql.Timestamp)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Tells you if the date part of a datetime is in a certain time range.
*/
public static boolean isTimeInRange( java.sql.Time start, java.sql.Time end, java.util.Date d )
{
d=new java.sql.Time(d.getHours(),d.getMinutes(),d.getSeconds());
if (start==null || end==null)
{
return false;
}
if (start.before(end)&&(!(d.after(start)&&d.before(end))))
{
return false;
}
if (end.before(start)&&(!(d.after(end)||d.before(start))))
{
return false;
}
return true;
}
public static int getYear( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.YEAR );
}
public static int getMonth( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MONTH );
}
public static int getDate( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.DATE );
}
public static int getHour( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.HOUR );
}
public static int getMinute( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MINUTE );
}
public static int getSeconds( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.SECOND );
}
public static int getMillisecond( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MILLISECOND );
}
/**
* Convert an Object to a String using Dates
*/
public static String toString( Object date )
{
if( date == null ) return null;
if( java.sql.Timestamp.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIMESTAMP_FORMAT.format( date );
}
if( java.sql.Time.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIME_FORMAT.format( date );
}
if( java.sql.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATE_FORMAT.format( date );
}
if( java.util.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATETIME_FORMAT.format( date );
}
throw new IllegalArgumentException( "Unsupported type " + date.getClass() );
}
}
</source>
Roll the java.util.Date forward or backward
<source lang="java">
/*
* Copyright Javelin Software, All rights reserved. */
import java.util.*; import java.text.*; /**
* The DateUtil is used as a Utility Class for Dates. * * @author Robin Sharp */
public class DateUtil {
public final static long SECOND_MILLIS = 1000;
public final static long MINUTE_MILLIS = SECOND_MILLIS*60;
public final static long HOUR_MILLIS = MINUTE_MILLIS*60;
public final static long DAY_MILLIS = HOUR_MILLIS*24;
public final static long YEAR_MILLIS = DAY_MILLIS*365;
public static DateFormat OUT_DATE_FORMAT = new SimpleDateFormat("dd/MM/yyyy");
public static DateFormat OUT_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat OUT_DATETIME_FORMAT = new SimpleDateFormat("d/M/yyyy H:mm:ss");
public static DateFormat OUT_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat IN_DATE_FORMAT = new SimpleDateFormat("d/M/yy");
public static DateFormat IN_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat IN_DATETIME_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss");
public static DateFormat IN_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat DATE_TIME_FORMAT= new SimpleDateFormat( "yyyyMMddkkmmss" );
public static Calendar calendar = new GregorianCalendar();
static
{
IN_DATE_FORMAT.setLenient(false);
IN_TIME_FORMAT.setLenient(false);
IN_DATETIME_FORMAT.setLenient(false);
}
/**
* Create a new DateTime. To the last second. This will not create any
* extra-millis-seconds, which may cause bugs when writing to stores such as
* databases that round milli-seconds up and down.
*/
public static java.util.Date newDateTime()
{
return new java.util.Date( (System.currentTimeMillis()/SECOND_MILLIS)*SECOND_MILLIS);
}
/**
* Create a new Date. To the last day.
*/
public static java.sql.Date newDate()
{
return new java.sql.Date( (System.currentTimeMillis()/DAY_MILLIS)*DAY_MILLIS);
}
/**
* Create a new Time, with no date component.
*/
public static java.sql.Time newTime()
{
return new java.sql.Time( System.currentTimeMillis()%DAY_MILLIS);
}
/**
* Create a new Timestamp.
*/
public static java.sql.Timestamp newTimestamp()
{
return new java.sql.Timestamp( System.currentTimeMillis() );
}
/**
* Get the seconds difference
*/
public static int secondsDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/SECOND_MILLIS) - (earlierDate.getTime()/SECOND_MILLIS));
}
/**
* Get the minutes difference
*/
public static int minutesDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/MINUTE_MILLIS) - (earlierDate.getTime()/MINUTE_MILLIS));
}
/**
* Get the hours difference
*/
public static int hoursDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/HOUR_MILLIS) - (earlierDate.getTime()/HOUR_MILLIS));
}
/**
* Get the days difference
*/
public static int daysDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/DAY_MILLIS) - (earlierDate.getTime()/DAY_MILLIS));
}
/**
* Roll the java.util.Time forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Time rollTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Time(gc.getTime().getTime());
}
/**
* Roll the java.util.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.util.Date rollDateTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.util.Date(gc.getTime().getTime());
}
/**
* Roll the java.sql.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Date rollDate( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Date(gc.getTime().getTime());
}
/**
* Roll the years forward or backward.
* @param startDate - The start date
* @param years - Negative to rollbackwards.
*/
public static java.sql.Date rollYears( java.util.Date startDate, int years )
{
return rollDate( startDate, Calendar.YEAR, years );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param months - Negative to rollbackwards.
*/
public static java.sql.Date rollMonths( java.util.Date startDate, int months )
{
return rollDate( startDate, Calendar.MONTH, months );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param days - Negative to rollbackwards.
*/
public static java.sql.Date rollDays( java.util.Date startDate, int days )
{
return rollDate( startDate, Calendar.DATE, days );
}
/**
* Checks the day, month and year are equal.
*/
public static boolean dateEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear();
}
/**
* Checks the hour, minute and second are equal.
*/
public static boolean timeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Checks the second, hour, month, day, month and year are equal.
*/
public static boolean dateTimeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear() &&
d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Convert an Object of type Classs to an Object.
*/
public static Object toObject( Class clazz, Object value ) throws ParseException
{
if( value == null ) return null;
if( clazz == null ) return value;
if( java.sql.Date.class.isAssignableFrom( clazz ) ) return toDate( value );
if( java.sql.Time.class.isAssignableFrom( clazz ) ) return toTime( value );
if( java.sql.Timestamp.class.isAssignableFrom( clazz ) ) return toTimestamp( value );
if( java.util.Date.class.isAssignableFrom( clazz ) ) return toDateTime( value );
return value;
}
/**
* Convert an Object to a DateTime, without an Exception
*/
public static java.util.Date getDateTime( Object value )
{
try
{
return toDateTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a DateTime.
*/
public static java.util.Date toDateTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.util.Date ) return (java.util.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return IN_DATETIME_FORMAT.parse( (String)value );
}
return IN_DATETIME_FORMAT.parse( value.toString() );
}
/**
* Convert an Object to a Date, without an Exception
*/
public static java.sql.Date getDate( Object value )
{
try
{
return toDate( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Date.
*/
public static java.sql.Date toDate( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Date ) return (java.sql.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Date( IN_DATE_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Date( IN_DATE_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Time, without an Exception
*/
public static java.sql.Time getTime( Object value )
{
try
{
return toTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Time.
*/
public static java.sql.Time toTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Time ) return (java.sql.Time)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Time( IN_TIME_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Time( IN_TIME_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Timestamp, without an Exception
*/
public static java.sql.Timestamp getTimestamp( Object value )
{
try
{
return toTimestamp( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Timestamp.
*/
public static java.sql.Timestamp toTimestamp( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Timestamp ) return (java.sql.Timestamp)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Tells you if the date part of a datetime is in a certain time range.
*/
public static boolean isTimeInRange( java.sql.Time start, java.sql.Time end, java.util.Date d )
{
d=new java.sql.Time(d.getHours(),d.getMinutes(),d.getSeconds());
if (start==null || end==null)
{
return false;
}
if (start.before(end)&&(!(d.after(start)&&d.before(end))))
{
return false;
}
if (end.before(start)&&(!(d.after(end)||d.before(start))))
{
return false;
}
return true;
}
public static int getYear( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.YEAR );
}
public static int getMonth( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MONTH );
}
public static int getDate( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.DATE );
}
public static int getHour( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.HOUR );
}
public static int getMinute( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MINUTE );
}
public static int getSeconds( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.SECOND );
}
public static int getMillisecond( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MILLISECOND );
}
/**
* Convert an Object to a String using Dates
*/
public static String toString( Object date )
{
if( date == null ) return null;
if( java.sql.Timestamp.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIMESTAMP_FORMAT.format( date );
}
if( java.sql.Time.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIME_FORMAT.format( date );
}
if( java.sql.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATE_FORMAT.format( date );
}
if( java.util.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATETIME_FORMAT.format( date );
}
throw new IllegalArgumentException( "Unsupported type " + date.getClass() );
}
}
</source>
Roll the java.util.Time forward or backward
<source lang="java">
/*
* Copyright Javelin Software, All rights reserved. */
import java.util.*; import java.text.*; /**
* The DateUtil is used as a Utility Class for Dates. * * @author Robin Sharp */
public class DateUtil {
public final static long SECOND_MILLIS = 1000;
public final static long MINUTE_MILLIS = SECOND_MILLIS*60;
public final static long HOUR_MILLIS = MINUTE_MILLIS*60;
public final static long DAY_MILLIS = HOUR_MILLIS*24;
public final static long YEAR_MILLIS = DAY_MILLIS*365;
public static DateFormat OUT_DATE_FORMAT = new SimpleDateFormat("dd/MM/yyyy");
public static DateFormat OUT_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat OUT_DATETIME_FORMAT = new SimpleDateFormat("d/M/yyyy H:mm:ss");
public static DateFormat OUT_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat IN_DATE_FORMAT = new SimpleDateFormat("d/M/yy");
public static DateFormat IN_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat IN_DATETIME_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss");
public static DateFormat IN_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat DATE_TIME_FORMAT= new SimpleDateFormat( "yyyyMMddkkmmss" );
public static Calendar calendar = new GregorianCalendar();
static
{
IN_DATE_FORMAT.setLenient(false);
IN_TIME_FORMAT.setLenient(false);
IN_DATETIME_FORMAT.setLenient(false);
}
/**
* Create a new DateTime. To the last second. This will not create any
* extra-millis-seconds, which may cause bugs when writing to stores such as
* databases that round milli-seconds up and down.
*/
public static java.util.Date newDateTime()
{
return new java.util.Date( (System.currentTimeMillis()/SECOND_MILLIS)*SECOND_MILLIS);
}
/**
* Create a new Date. To the last day.
*/
public static java.sql.Date newDate()
{
return new java.sql.Date( (System.currentTimeMillis()/DAY_MILLIS)*DAY_MILLIS);
}
/**
* Create a new Time, with no date component.
*/
public static java.sql.Time newTime()
{
return new java.sql.Time( System.currentTimeMillis()%DAY_MILLIS);
}
/**
* Create a new Timestamp.
*/
public static java.sql.Timestamp newTimestamp()
{
return new java.sql.Timestamp( System.currentTimeMillis() );
}
/**
* Get the seconds difference
*/
public static int secondsDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/SECOND_MILLIS) - (earlierDate.getTime()/SECOND_MILLIS));
}
/**
* Get the minutes difference
*/
public static int minutesDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/MINUTE_MILLIS) - (earlierDate.getTime()/MINUTE_MILLIS));
}
/**
* Get the hours difference
*/
public static int hoursDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/HOUR_MILLIS) - (earlierDate.getTime()/HOUR_MILLIS));
}
/**
* Get the days difference
*/
public static int daysDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/DAY_MILLIS) - (earlierDate.getTime()/DAY_MILLIS));
}
/**
* Roll the java.util.Time forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Time rollTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Time(gc.getTime().getTime());
}
/**
* Roll the java.util.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.util.Date rollDateTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.util.Date(gc.getTime().getTime());
}
/**
* Roll the java.sql.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Date rollDate( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Date(gc.getTime().getTime());
}
/**
* Roll the years forward or backward.
* @param startDate - The start date
* @param years - Negative to rollbackwards.
*/
public static java.sql.Date rollYears( java.util.Date startDate, int years )
{
return rollDate( startDate, Calendar.YEAR, years );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param months - Negative to rollbackwards.
*/
public static java.sql.Date rollMonths( java.util.Date startDate, int months )
{
return rollDate( startDate, Calendar.MONTH, months );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param days - Negative to rollbackwards.
*/
public static java.sql.Date rollDays( java.util.Date startDate, int days )
{
return rollDate( startDate, Calendar.DATE, days );
}
/**
* Checks the day, month and year are equal.
*/
public static boolean dateEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear();
}
/**
* Checks the hour, minute and second are equal.
*/
public static boolean timeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Checks the second, hour, month, day, month and year are equal.
*/
public static boolean dateTimeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear() &&
d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Convert an Object of type Classs to an Object.
*/
public static Object toObject( Class clazz, Object value ) throws ParseException
{
if( value == null ) return null;
if( clazz == null ) return value;
if( java.sql.Date.class.isAssignableFrom( clazz ) ) return toDate( value );
if( java.sql.Time.class.isAssignableFrom( clazz ) ) return toTime( value );
if( java.sql.Timestamp.class.isAssignableFrom( clazz ) ) return toTimestamp( value );
if( java.util.Date.class.isAssignableFrom( clazz ) ) return toDateTime( value );
return value;
}
/**
* Convert an Object to a DateTime, without an Exception
*/
public static java.util.Date getDateTime( Object value )
{
try
{
return toDateTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a DateTime.
*/
public static java.util.Date toDateTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.util.Date ) return (java.util.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return IN_DATETIME_FORMAT.parse( (String)value );
}
return IN_DATETIME_FORMAT.parse( value.toString() );
}
/**
* Convert an Object to a Date, without an Exception
*/
public static java.sql.Date getDate( Object value )
{
try
{
return toDate( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Date.
*/
public static java.sql.Date toDate( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Date ) return (java.sql.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Date( IN_DATE_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Date( IN_DATE_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Time, without an Exception
*/
public static java.sql.Time getTime( Object value )
{
try
{
return toTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Time.
*/
public static java.sql.Time toTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Time ) return (java.sql.Time)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Time( IN_TIME_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Time( IN_TIME_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Timestamp, without an Exception
*/
public static java.sql.Timestamp getTimestamp( Object value )
{
try
{
return toTimestamp( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Timestamp.
*/
public static java.sql.Timestamp toTimestamp( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Timestamp ) return (java.sql.Timestamp)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Tells you if the date part of a datetime is in a certain time range.
*/
public static boolean isTimeInRange( java.sql.Time start, java.sql.Time end, java.util.Date d )
{
d=new java.sql.Time(d.getHours(),d.getMinutes(),d.getSeconds());
if (start==null || end==null)
{
return false;
}
if (start.before(end)&&(!(d.after(start)&&d.before(end))))
{
return false;
}
if (end.before(start)&&(!(d.after(end)||d.before(start))))
{
return false;
}
return true;
}
public static int getYear( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.YEAR );
}
public static int getMonth( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MONTH );
}
public static int getDate( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.DATE );
}
public static int getHour( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.HOUR );
}
public static int getMinute( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MINUTE );
}
public static int getSeconds( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.SECOND );
}
public static int getMillisecond( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MILLISECOND );
}
/**
* Convert an Object to a String using Dates
*/
public static String toString( Object date )
{
if( date == null ) return null;
if( java.sql.Timestamp.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIMESTAMP_FORMAT.format( date );
}
if( java.sql.Time.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIME_FORMAT.format( date );
}
if( java.sql.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATE_FORMAT.format( date );
}
if( java.util.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATETIME_FORMAT.format( date );
}
throw new IllegalArgumentException( "Unsupported type " + date.getClass() );
}
}
</source>
Roll the years forward or backward
<source lang="java">
/*
* Copyright Javelin Software, All rights reserved. */
import java.util.*; import java.text.*; /**
* The DateUtil is used as a Utility Class for Dates. * * @author Robin Sharp */
public class DateUtil {
public final static long SECOND_MILLIS = 1000;
public final static long MINUTE_MILLIS = SECOND_MILLIS*60;
public final static long HOUR_MILLIS = MINUTE_MILLIS*60;
public final static long DAY_MILLIS = HOUR_MILLIS*24;
public final static long YEAR_MILLIS = DAY_MILLIS*365;
public static DateFormat OUT_DATE_FORMAT = new SimpleDateFormat("dd/MM/yyyy");
public static DateFormat OUT_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat OUT_DATETIME_FORMAT = new SimpleDateFormat("d/M/yyyy H:mm:ss");
public static DateFormat OUT_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat IN_DATE_FORMAT = new SimpleDateFormat("d/M/yy");
public static DateFormat IN_TIME_FORMAT = new SimpleDateFormat("H:mm:ss");
public static DateFormat IN_DATETIME_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss");
public static DateFormat IN_TIMESTAMP_FORMAT = new SimpleDateFormat("d/M/yy H:mm:ss.SSS");
public static DateFormat DATE_TIME_FORMAT= new SimpleDateFormat( "yyyyMMddkkmmss" );
public static Calendar calendar = new GregorianCalendar();
static
{
IN_DATE_FORMAT.setLenient(false);
IN_TIME_FORMAT.setLenient(false);
IN_DATETIME_FORMAT.setLenient(false);
}
/**
* Create a new DateTime. To the last second. This will not create any
* extra-millis-seconds, which may cause bugs when writing to stores such as
* databases that round milli-seconds up and down.
*/
public static java.util.Date newDateTime()
{
return new java.util.Date( (System.currentTimeMillis()/SECOND_MILLIS)*SECOND_MILLIS);
}
/**
* Create a new Date. To the last day.
*/
public static java.sql.Date newDate()
{
return new java.sql.Date( (System.currentTimeMillis()/DAY_MILLIS)*DAY_MILLIS);
}
/**
* Create a new Time, with no date component.
*/
public static java.sql.Time newTime()
{
return new java.sql.Time( System.currentTimeMillis()%DAY_MILLIS);
}
/**
* Create a new Timestamp.
*/
public static java.sql.Timestamp newTimestamp()
{
return new java.sql.Timestamp( System.currentTimeMillis() );
}
/**
* Get the seconds difference
*/
public static int secondsDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/SECOND_MILLIS) - (earlierDate.getTime()/SECOND_MILLIS));
}
/**
* Get the minutes difference
*/
public static int minutesDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/MINUTE_MILLIS) - (earlierDate.getTime()/MINUTE_MILLIS));
}
/**
* Get the hours difference
*/
public static int hoursDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/HOUR_MILLIS) - (earlierDate.getTime()/HOUR_MILLIS));
}
/**
* Get the days difference
*/
public static int daysDiff( Date earlierDate, Date laterDate )
{
if( earlierDate == null || laterDate == null ) return 0;
return (int)((laterDate.getTime()/DAY_MILLIS) - (earlierDate.getTime()/DAY_MILLIS));
}
/**
* Roll the java.util.Time forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Time rollTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Time(gc.getTime().getTime());
}
/**
* Roll the java.util.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.util.Date rollDateTime( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.util.Date(gc.getTime().getTime());
}
/**
* Roll the java.sql.Date forward or backward.
* @param startDate - The start date
* @period Calendar.YEAR etc
* @param amount - Negative to rollbackwards.
*/
public static java.sql.Date rollDate( java.util.Date startDate, int period, int amount )
{
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(startDate);
gc.add(period, amount);
return new java.sql.Date(gc.getTime().getTime());
}
/**
* Roll the years forward or backward.
* @param startDate - The start date
* @param years - Negative to rollbackwards.
*/
public static java.sql.Date rollYears( java.util.Date startDate, int years )
{
return rollDate( startDate, Calendar.YEAR, years );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param months - Negative to rollbackwards.
*/
public static java.sql.Date rollMonths( java.util.Date startDate, int months )
{
return rollDate( startDate, Calendar.MONTH, months );
}
/**
* Roll the days forward or backward.
* @param startDate - The start date
* @param days - Negative to rollbackwards.
*/
public static java.sql.Date rollDays( java.util.Date startDate, int days )
{
return rollDate( startDate, Calendar.DATE, days );
}
/**
* Checks the day, month and year are equal.
*/
public static boolean dateEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear();
}
/**
* Checks the hour, minute and second are equal.
*/
public static boolean timeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Checks the second, hour, month, day, month and year are equal.
*/
public static boolean dateTimeEquals( java.util.Date d1, java.util.Date d2 )
{
if( d1 == null || d2 == null ) return false;
return d1.getDate() == d2.getDate() &&
d1.getMonth() == d2.getMonth() &&
d1.getYear() == d2.getYear() &&
d1.getHours() == d2.getHours() &&
d1.getMinutes() == d2.getMinutes() &&
d1.getSeconds() == d2.getSeconds();
}
/**
* Convert an Object of type Classs to an Object.
*/
public static Object toObject( Class clazz, Object value ) throws ParseException
{
if( value == null ) return null;
if( clazz == null ) return value;
if( java.sql.Date.class.isAssignableFrom( clazz ) ) return toDate( value );
if( java.sql.Time.class.isAssignableFrom( clazz ) ) return toTime( value );
if( java.sql.Timestamp.class.isAssignableFrom( clazz ) ) return toTimestamp( value );
if( java.util.Date.class.isAssignableFrom( clazz ) ) return toDateTime( value );
return value;
}
/**
* Convert an Object to a DateTime, without an Exception
*/
public static java.util.Date getDateTime( Object value )
{
try
{
return toDateTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a DateTime.
*/
public static java.util.Date toDateTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.util.Date ) return (java.util.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return IN_DATETIME_FORMAT.parse( (String)value );
}
return IN_DATETIME_FORMAT.parse( value.toString() );
}
/**
* Convert an Object to a Date, without an Exception
*/
public static java.sql.Date getDate( Object value )
{
try
{
return toDate( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Date.
*/
public static java.sql.Date toDate( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Date ) return (java.sql.Date)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Date( IN_DATE_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Date( IN_DATE_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Time, without an Exception
*/
public static java.sql.Time getTime( Object value )
{
try
{
return toTime( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Time.
*/
public static java.sql.Time toTime( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Time ) return (java.sql.Time)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Time( IN_TIME_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Time( IN_TIME_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Convert an Object to a Timestamp, without an Exception
*/
public static java.sql.Timestamp getTimestamp( Object value )
{
try
{
return toTimestamp( value );
}
catch( ParseException pe )
{
pe.printStackTrace();
return null;
}
}
/**
* Convert an Object to a Timestamp.
*/
public static java.sql.Timestamp toTimestamp( Object value ) throws ParseException
{
if( value == null ) return null;
if( value instanceof java.sql.Timestamp ) return (java.sql.Timestamp)value;
if( value instanceof String )
{
if( "".equals( (String)value ) ) return null;
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( (String)value ).getTime() );
}
return new java.sql.Timestamp( IN_TIMESTAMP_FORMAT.parse( value.toString() ).getTime() );
}
/**
* Tells you if the date part of a datetime is in a certain time range.
*/
public static boolean isTimeInRange( java.sql.Time start, java.sql.Time end, java.util.Date d )
{
d=new java.sql.Time(d.getHours(),d.getMinutes(),d.getSeconds());
if (start==null || end==null)
{
return false;
}
if (start.before(end)&&(!(d.after(start)&&d.before(end))))
{
return false;
}
if (end.before(start)&&(!(d.after(end)||d.before(start))))
{
return false;
}
return true;
}
public static int getYear( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.YEAR );
}
public static int getMonth( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MONTH );
}
public static int getDate( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.DATE );
}
public static int getHour( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.HOUR );
}
public static int getMinute( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MINUTE );
}
public static int getSeconds( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.SECOND );
}
public static int getMillisecond( Date date )
{
calendar.setTime( date );
return calendar.get( Calendar.MILLISECOND );
}
/**
* Convert an Object to a String using Dates
*/
public static String toString( Object date )
{
if( date == null ) return null;
if( java.sql.Timestamp.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIMESTAMP_FORMAT.format( date );
}
if( java.sql.Time.class.isAssignableFrom( date.getClass() ) )
{
return OUT_TIME_FORMAT.format( date );
}
if( java.sql.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATE_FORMAT.format( date );
}
if( java.util.Date.class.isAssignableFrom( date.getClass() ) )
{
return OUT_DATETIME_FORMAT.format( date );
}
throw new IllegalArgumentException( "Unsupported type " + date.getClass() );
}
}
</source>
Round this date, leaving the field specified as the most significant field.
<source lang="java">
import java.util.Calendar; import java.util.Date; /**
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
/**
A suite of utilities surrounding the use of the * {@link java.util.Calendar} and {@link java.util.Date} object.
**
DateUtils contains a lot of common methods considering manipulations * of Dates or Calendars. Some methods require some extra explanation. * The truncate and round methods could be considered the Math.floor(), * Math.ceil() or Math.round versions for dates * This way date-fields will be ignored in bottom-up order. * As a complement to these methods we"ve introduced some fragment-methods. * With these methods the Date-fields will be ignored in top-down order. * Since a date without a year is not a valid date, you have to decide in what * kind of date-field you want your result, for instance milliseconds or days. *
* * * * @author * @author Phil Steitz * @author Robert Scholte * @since 2.0 * @version $Id: DateUtils.java 634096 2008-03-06 00:58:11Z niallp $ */
public class Main {
private static final int[][] fields = {
{Calendar.MILLISECOND},
{Calendar.SECOND},
{Calendar.MINUTE},
{Calendar.HOUR_OF_DAY, Calendar.HOUR},
{Calendar.DATE, Calendar.DAY_OF_MONTH, Calendar.AM_PM
/* Calendar.DAY_OF_YEAR, Calendar.DAY_OF_WEEK, Calendar.DAY_OF_WEEK_IN_MONTH */
},
{Calendar.MONTH, DateUtils.SEMI_MONTH},
{Calendar.YEAR},
{Calendar.ERA}};
/**
* Round this date, leaving the field specified as the most * significant field.
**
For example, if you had the datetime of 28 Mar 2002 * 13:45:01.231, if this was passed with HOUR, it would return * 28 Mar 2002 14:00:00.000. If this was passed with MONTH, it * would return 1 April 2002 0:00:00.000.
**
For a date in a timezone that handles the change to daylight * saving time, rounding to Calendar.HOUR_OF_DAY will behave as follows. * Suppose daylight saving time begins at 02:00 on March 30. Rounding a * date that crosses this time would produce the following values: *
-
*
- March 30, 2003 01:10 rounds to March 30, 2003 01:00 *
- March 30, 2003 01:40 rounds to March 30, 2003 03:00 *
- March 30, 2003 02:10 rounds to March 30, 2003 03:00 *
- March 30, 2003 02:40 rounds to March 30, 2003 04:00 *
* * @param date the date to work with * @param field the field from*Calendar* orSEMI_MONTH* @return the rounded date (a different object) * @throws IllegalArgumentException if the date isnull* @throws ArithmeticException if the year is over 280 million */ public static Calendar round(Calendar date, int field) { if (date == null) { throw new IllegalArgumentException("The date must not be null"); } Calendar rounded = (Calendar) date.clone(); modify(rounded, field, true); return rounded; } //----------------------------------------------------------------------- /**
Internal calculation method.
*
* @param val the calendar
* @param field the field constant
* @param round true to round, false to truncate
* @throws ArithmeticException if the year is over 280 million
*/
private static void modify(Calendar val, int field, boolean round) {
if (val.get(Calendar.YEAR) > 280000000) {
throw new ArithmeticException("Calendar value too large for accurate calculations");
}
if (field == Calendar.MILLISECOND) {
return;
}
// ----------------- Fix for LANG-59 ---------------------- START ---------------
// see http://issues.apache.org/jira/browse/LANG-59
//
// Manually truncate milliseconds, seconds and minutes, rather than using
// Calendar methods.
Date date = val.getTime();
long time = date.getTime();
boolean done = false;
// truncate milliseconds
int millisecs = val.get(Calendar.MILLISECOND);
if (!round || millisecs < 500) {
time = time - millisecs;
}
if (field == Calendar.SECOND) {
done = true;
}
// truncate seconds
int seconds = val.get(Calendar.SECOND);
if (!done && (!round || seconds < 30)) {
time = time - (seconds * 1000L);
}
if (field == Calendar.MINUTE) {
done = true;
}
// truncate minutes
int minutes = val.get(Calendar.MINUTE);
if (!done && (!round || minutes < 30)) {
time = time - (minutes * 60000L);
}
// reset time
if (date.getTime() != time) {
date.setTime(time);
val.setTime(date);
}
// ----------------- Fix for LANG-59 ----------------------- END ----------------
boolean roundUp = false;
for (int i = 0; i < fields.length; i++) {
for (int j = 0; j < fields[i].length; j++) {
if (fields[i][j] == field) {
//This is our field... we stop looping
if (round && roundUp) {
if (field == DateUtils.SEMI_MONTH) {
//This is a special case that"s hard to generalize
//If the date is 1, we round up to 16, otherwise
// we subtract 15 days and add 1 month
if (val.get(Calendar.DATE) == 1) {
val.add(Calendar.DATE, 15);
} else {
val.add(Calendar.DATE, -15);
val.add(Calendar.MONTH, 1);
}
} else {
//We need at add one to this field since the
// last number causes us to round up
val.add(fields[i][0], 1);
}
}
return;
}
}
//We have various fields that are not easy roundings
int offset = 0;
boolean offsetSet = false;
//These are special types of fields that require different rounding rules
switch (field) {
case DateUtils.SEMI_MONTH:
if (fields[i][0] == Calendar.DATE) {
//If we"re going to drop the DATE field"s value,
// we want to do this our own way.
//We need to subtrace 1 since the date has a minimum of 1
offset = val.get(Calendar.DATE) - 1;
//If we"re above 15 days adjustment, that means we"re in the
// bottom half of the month and should stay accordingly.
if (offset >= 15) {
offset -= 15;
}
//Record whether we"re in the top or bottom half of that range
roundUp = offset > 7;
offsetSet = true;
}
break;
case Calendar.AM_PM:
if (fields[i][0] == Calendar.HOUR_OF_DAY) {
//If we"re going to drop the HOUR field"s value,
// we want to do this our own way.
offset = val.get(Calendar.HOUR_OF_DAY);
if (offset >= 12) {
offset -= 12;
}
roundUp = offset > 6;
offsetSet = true;
}
break;
}
if (!offsetSet) {
int min = val.getActualMinimum(fields[i][0]);
int max = val.getActualMaximum(fields[i][0]);
//Calculate the offset from the minimum allowed value
offset = val.get(fields[i][0]) - min;
//Set roundUp if this is more than half way between the minimum and maximum
roundUp = offset > ((max - min) / 2);
}
//We need to remove this field
if (offset != 0) {
val.set(fields[i][0], val.get(fields[i][0]) - offset);
}
}
throw new IllegalArgumentException("The field " + field + " is not supported");
}
}
</source>
Utilities to working with dates java.util.Date
<source lang="java">
import java.text.DateFormat; import java.util.Calendar; import java.util.Date; import java.util.Locale;
/**
* * @author Javier Paniza * @author Peter Smith */ public class Dates { /** * With hour to 0. * If day, month and year are 0 return null. */ public static Date create(int day, int month, int year) { return create(day, month, year, 0, 0, 0); } /** * If day, month and year are 0 return null. */ public static Date create(int day, int month, int year, int hourofday, int minute, int second) { if (day == 0 && month == 0 && year == 0) return null; Calendar cal = Calendar.getInstance(); cal.set(year, month - 1, day, hourofday, minute, second); cal.set(Calendar.MILLISECOND, 0); return cal.getTime(); } /** * Current date without time. */ public static Date createCurrent() { return removeTime(new java.util.Date()); } /** * Returns the day of date. <p> * * If date is null return 0. */ public static int getDay(Date date) { if (date == null) return 0; Calendar cal = Calendar.getInstance(); cal.setTime(date); return cal.get(Calendar.DAY_OF_MONTH); } /** * Returns the year (4 digits) of date. <o> * * If date is null returns 0. */ public static int getYear(Date date) { if (date == null) return 0; Calendar cal = Calendar.getInstance(); cal.setTime(date); return cal.get(Calendar.YEAR); } /** * Returns the month (1 to 12) of date. <p> * * If date is null returns 0. */ public static int getMonth(Date date) { if (date == null) return 0; Calendar cal = Calendar.getInstance(); cal.setTime(date); return cal.get(Calendar.MONTH) + 1; } /** * Put the day to the date. <p> * * If date is null it has no effect (but no exception is thrown) */ public static void setDay(Date date, int day) { if (date == null) return; Calendar cal = Calendar.getInstance(); cal.setTime(date); cal.set(Calendar.DAY_OF_MONTH, day); } /** * Put the month (1 to 12) to the date. <p> * * If date is null it has no effect (but no exception is thrown) */ public static void setMonth(Date date, int month) { if (date == null) return; Calendar cal = Calendar.getInstance(); cal.setTime(date); cal.set(Calendar.MONTH, month - 1); } /** * Put the year to the date. <p> * * If date is null it has no effect (but no exception is thrown) */ public static void setYear(Date date, int year) { if (date == null) return; Calendar cal = Calendar.getInstance(); cal.setTime(date); cal.set(Calendar.YEAR, year); } /** * Puts hours, minutes, seconds and milliseconds to zero. <p> * * @return The same date sent as argument (a new date is not created). If null * if sent a null is returned. */ public static Date removeTime(Date date) { if (date == null) return null; Calendar cal = Calendar.getInstance(); cal.setTime(date); cal.set(Calendar.HOUR_OF_DAY, 0); cal.set(Calendar.MINUTE, 0); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MILLISECOND, 0); date.setTime(cal.getTime().getTime()); return date; } /** * Returns a clone but without hours, minutes, seconds and milliseconds. <p> * * @return If null if sent a null is returned. */ public static Date cloneWithoutTime(Date date) { if (date == null) return null; Date result = (Date) date.clone(); removeTime(result); return result; } /** * Returns a clone but with 23:59:59:999 for hours, minutes, seconds and milliseconds. <p> * * @return The same date sent as argument (a new date is not created). If null * if sent a null is returned. */ public static Date cloneWith2359(Date date) { if (date == null) return null; Date result = (Date) date.clone(); Calendar cal = Calendar.getInstance(); cal.setTime(result); cal.set(Calendar.HOUR_OF_DAY, 23); cal.set(Calendar.MINUTE, 59); cal.set(Calendar.SECOND, 59); cal.set(Calendar.MILLISECOND, 999); result.setTime(cal.getTime().getTime()); return result; } /** * Creates a java.sql.Date from a java.util.Date. <p> * * @param date If null returns null */ public static java.sql.Date toSQL(java.util.Date date) { if (date == null) return null; return new java.sql.Date(date.getTime()); } /** * Creates a date with day, month and year of original, * but with current time. <p> * * @param date It is not changed * @return If arguments is null then is null */ public static java.util.Date withTime(java.util.Date date) { if (date == null) return null; Calendar cal = Calendar.getInstance(); cal.setTime(date); int year = cal.get(Calendar.YEAR); int month = cal.get(Calendar.MONTH); int day = cal.get(Calendar.DAY_OF_MONTH); cal.setTime(new java.util.Date()); cal.set(Calendar.YEAR, year); cal.set(Calendar.MONTH, month); cal.set(Calendar.DAY_OF_MONTH, day); return cal.getTime(); } /** * Compares if 2 dates are equals at day, month and year * level, ignoring time in comparing. * * @param f1 Can be null * @param f2 Can be null */ public static boolean isDifferentDay(java.util.Date f1, java.util.Date f2) { if (f1 == null && f2 == null) return false; if (f1 == null || f2 == null) return true; Calendar cal = Calendar.getInstance(); cal.setTime(f1); int dd1 = cal.get(Calendar.DAY_OF_MONTH); int mm1 = cal.get(Calendar.MONTH); int aa1 = cal.get(Calendar.YEAR); cal.setTime(f2); int dd2 = cal.get(Calendar.DAY_OF_MONTH); int mm2 = cal.get(Calendar.MONTH); int aa2 = cal.get(Calendar.YEAR); return !(aa1==aa2 && mm1==mm2 && dd1==dd2); } /** * Difference of 2 dates in years, months and days. <p> * * @param f1 If null returns null * @param f2 If null returns null */ public static DateDistance dateDistance(java.util.Date f1, java.util.Date f2, boolean includeStartDate ) { DateDistance df = new DateDistance(); if (null == f1 || null == f2) return null; Calendar fmax = Calendar.getInstance(), fmin = Calendar.getInstance(); f1 = Dates.removeTime(f1); f2 = Dates.removeTime(f2); if (f1.after(f2)) { fmax.setTime(f1); fmin.setTime(f2); } else { fmin.setTime(f1); fmax.setTime(f2); } int initDay = fmin.get(Calendar.DATE); int initMonth = fmin.get(Calendar.MONTH); int initYear = fmin.get(Calendar.YEAR); int endMonth = fmax.get(Calendar.MONTH); int endYear = fmax.get(Calendar.YEAR); int finalLimit = fmax.getActualMaximum(Calendar.DATE); int initPeak = 0; int finalPeak = 0; if (initMonth == endMonth && initYear == endYear) { while ( fmin.getTime().before(fmax.getTime()) ) { fmin.add(Calendar.DATE, 1); df.days++; } if (includeStartDate) { df.days++; } if (df.days >= finalLimit) { df.months++; df.days = 0; } return df; } if (initDay != 1) { while (fmin.get(Calendar.DATE) != 1) { fmin.add(Calendar.DATE, 1); initPeak++; } } while (fmin.get(Calendar.MONTH) != endMonth || fmin.get(Calendar.YEAR) != endYear) { fmin.add(Calendar.MONTH, 1); df.months++; if (df.months == 12) { df.years++; df.months = 0; } } while ( fmin.getTime().before(fmax.getTime()) ) { fmin.add(Calendar.DATE, 1); finalPeak++; } int peak = initPeak + finalPeak; if (includeStartDate) { peak++; } if (peak >= finalLimit) { peak = peak - finalLimit; df.months++; if (df.months == 12) { df.years++; df.months = 0; } } df.days = peak; return df; } /** * Difference of 2 dates in years, months and days. <p> * * @param f1 If null returns null * @param f2 If null returns null */ public static DateDistance dateDistance(java.util.Date f1, java.util.Date f2) { return dateDistance(f1, f2, false); } public static DateDistance addDateDistances(DateDistance dis1, DateDistance dis2) { DateDistance df=new DateDistance(); if ( null == dis1 || null == dis2 ) return null; int years, months, days; days = dis1.days + dis2.days; months = days / 30; days = days % 30; months = months + dis1.months + dis2.months ; years = months / 12 ; months = months % 12; years = years + ( dis1.years + dis2.years ); df.years = years; df.months=months; df.days=days; return df; } public static DateDistance subtractDateDistances(DateDistance dis1, DateDistance dis2) { DateDistance df = new DateDistance(); if ( null == dis1 || null == dis2 ) return null; int years=0; int months=0; int days=0; days = dis1.days - dis2.days; months = dis1.months - dis2.months; years =dis1.years - dis2.years; if (days<0) { days=days+30; months=months-1; } if (months<0){ months=months+12; years=years-1; } df.years = years; df.months = months; df.days = days; return df; } public static String dateFormatForJSCalendar(Locale locale) { DateFormat df = DateFormat.getDateInstance(DateFormat.SHORT, locale); String date = df.format(create(1, 2, 1971)); // d, m, y boolean always4InYear= "es".equals(locale.getLanguage()) || "pl".equals(locale.getLanguage()); String result = date. replaceAll("01", "%d"). replaceAll("02", "%m"). replaceAll("1971", "%Y"). replaceAll("71", always4InYear?"%Y":"%y"). replaceAll("1", "%d"). replaceAll("2", "%m"); return result; } public static String dateTimeFormatForJSCalendar(Locale locale) { DateFormat df = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT, locale); String datetime = df.format(create(1, 2, 1971, 15, 59, 0)); // d, m, y, hr, min, sec boolean always4InYear= "es".equals(locale.getLanguage()) || "pl".equals(locale.getLanguage()); String result = datetime. // time part replaceAll("15", "%H"). // 24hr format replaceAll("03", "%I"). // 12hr format - double digit replaceAll("3", "%l"). // 12hr format - single digit replaceAll("59","%M"). // minute replaceAll("PM", "%p"). // AM/PM - uppercase replaceAll("pm", "%P"). // am/pm - lowercase // date part replaceAll("01", "%d"). // day - double digit replaceAll("02", "%m"). // month - double digit replaceAll("1971", "%Y"). // year - 4 digit replaceAll("71", always4InYear?"%Y":"%y"). // year - 2 digit replaceAll("1", "%e"). // day - single digit replaceAll("2", "%m") // month - ??? seems only double digit is supported by calendar ; return result; } /** * Returns number of days between startDate and endDate<p> * * @param java.util.Date startDate * @param java.util.Date endDate * @param boolean includeStartDate<p> * */ public static int daysInterval (Date startDate, Date endDate, boolean includeStartDate ) { startDate = Dates.removeTime(startDate); Calendar start = Calendar.getInstance(); start.setTime(startDate); endDate = Dates.removeTime(endDate); Calendar end = Calendar.getInstance(); end.setTime(endDate); if (includeStartDate) { start.add(Calendar.DATE, -1); } int days = 0; while (start.before(end)) { days++; start.add(Calendar.DATE,1); } return days; } public static class DateDistance { public int days; public int months; public int years; } } </source>
