Java Tutorial/Swing/JFromattedField MaskFormatter
Содержание
Apply a mask to String
<source lang="java">
import javax.swing.text.MaskFormatter; public class Main {
public static void main(String args[]) throws Exception { MaskFormatter mf = new MaskFormatter("A-AAAA-AAAA-A"); mf.setValueContainsLiteralCharacters(false); System.out.println(mf.valueToString("123123123123")); }
} //1-2312-3123-1</source>
Formatted Masked Input: new MaskFormatter(###-##-####)
<source lang="java">
import java.awt.FlowLayout; import java.text.ParseException; import javax.swing.BoxLayout; import javax.swing.JFormattedTextField; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.text.MaskFormatter; public class MaskInputSample {
public static void main(String args[]) { JFrame frame = new JFrame("Mask Input"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JLabel label; JFormattedTextField input; JPanel panel; MaskFormatter formatter; BoxLayout layout = new BoxLayout(frame.getContentPane(), BoxLayout.Y_AXIS); frame.setLayout(layout); try { label = new JLabel("SSN"); formatter = new MaskFormatter("###"-##"-####"); input = new JFormattedTextField(formatter); input.setValue("123-45-6789"); input.setColumns(20); panel = new JPanel(); panel.add(label); panel.add(input); frame.add(panel); } catch (ParseException e) { System.err.println("Unable to add SSN"); } frame.pack(); frame.setVisible(true); }
}</source>
Formatted Masked Input: new MaskFormatter((###)###-####) (For phone number)
<source lang="java">
import java.text.ParseException; import javax.swing.BoxLayout; import javax.swing.JFormattedTextField; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.text.MaskFormatter; public class MaskInputSample2 {
public static void main(String args[]) { JFrame frame = new JFrame("Mask Input"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JLabel label; JFormattedTextField input; JPanel panel; MaskFormatter formatter; BoxLayout layout = new BoxLayout(frame.getContentPane(), BoxLayout.Y_AXIS); frame.setLayout(layout); try { label = new JLabel("SSN"); formatter = new MaskFormatter(""(###")" ###"-####"); input = new JFormattedTextField(formatter); input.setValue("(123) 145-6789"); input.setColumns(20); panel = new JPanel(); panel.add(label); panel.add(input); frame.add(panel); } catch (ParseException e) { System.err.println("Unable to add SSN"); } frame.pack(); frame.setVisible(true); }
}</source>
Input Masks Summary Table
CharacterDescription#Matches numeric character (Character.isDigit())HMatches hexadecimal number (0-9, a-f, and A-F)AMatches alphanumeric character (Character.is LetterOrDigit())?Matches alphabetic character (Character.isLetter())UMatches uppercase letter; maps lowercase to uppercaseLMatches lowercase letter; maps uppercase to lowercase*Wildcard, matches any character"Escape character to have literal strings/separators in input field
Regex Formatter with a JFormattedTextField
<source lang="java">
/*
* * Copyright (c) 1998 Sun Microsystems, Inc. All Rights Reserved. * * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use, * modify and redistribute this software in source and binary code form, * provided that i) this copyright notice and license appear on all copies of * the software; and ii) Licensee does not utilize the software in a manner * which is disparaging to Sun. * * This software is provided "AS IS," without a warranty of any kind. ALL * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE * POSSIBILITY OF SUCH DAMAGES. * * This software is not designed or intended for use in on-line control of * aircraft, air traffic, aircraft navigation or aircraft communications; or in * the design, construction, operation or maintenance of any nuclear * facility. Licensee represents and warrants that it will not use or * redistribute the Software for such purposes. */
import java.text.ParseException; import java.util.regex.Matcher; import java.util.regex.Pattern; import java.util.regex.PatternSyntaxException; import javax.swing.JFormattedTextField; import javax.swing.JFrame; import javax.swing.JTextField; import javax.swing.text.DefaultFormatter; /**
* A regular expression based implementation of AbstractFormatter. */
class RegexFormatter extends DefaultFormatter {
private Pattern pattern; private Matcher matcher; public RegexFormatter() { super(); } /** * Creates a regular expression based AbstractFormatter. * pattern specifies the regular expression that will be used * to determine if a value is legal. */ public RegexFormatter(String pattern) throws PatternSyntaxException { this(); setPattern(Pattern.rupile(pattern)); } /** * Creates a regular expression based AbstractFormatter. * pattern specifies the regular expression that will be used * to determine if a value is legal. */ public RegexFormatter(Pattern pattern) { this(); setPattern(pattern); } /** * Sets the pattern that will be used to determine if a value is legal. */ public void setPattern(Pattern pattern) { this.pattern = pattern; } /** * Returns the Pattern used to determine if a value is legal. */ public Pattern getPattern() { return pattern; } /** * Sets the Matcher used in the most recent test if a value is * legal. */ protected void setMatcher(Matcher matcher) { this.matcher = matcher; } /** * Returns the Matcher from the most test. */ protected Matcher getMatcher() { return matcher; } /** * Parses text returning an arbitrary Object. Some formatters * may return null. * * If a Pattern has been specified and the text completely * matches the regular expression this will invoke setMatcher. * * @throws ParseException * if there is an error in the conversion * @param text * String to convert * @return Object representation of text */ public Object stringToValue(String text) throws ParseException { Pattern pattern = getPattern(); if (pattern != null) { Matcher matcher = pattern.matcher(text); if (matcher.matches()) { setMatcher(matcher); return super.stringToValue(text); } throw new ParseException("Pattern did not match", 0); } return text; }
}
public class UsingRegexFormatter {
public static void main(String[] a){ JFrame frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JFormattedTextField formattedField = new JFormattedTextField(new RegexFormatter("\\(\\d{3}\\)\\d{3}-\\d{4}")); frame.add(formattedField,"North"); frame.add(new JTextField(),"South"); frame.setSize(300, 200); frame.setVisible(true); }
}</source>
Work with DefaultFormatterFactory
<source lang="java">
import java.awt.BorderLayout; import java.awt.Color; import java.awt.GridLayout; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.text.NumberFormat; import java.text.ParseException; import javax.swing.BorderFactory; import javax.swing.JFormattedTextField; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.SwingUtilities; import javax.swing.UIManager; import javax.swing.text.DefaultFormatterFactory; import javax.swing.text.NumberFormatter; /**
* FormatterFactoryDemo.java requires no other files. */
public class FormatterFactoryDemo extends JPanel implements
PropertyChangeListener { // Values for the text fields private double amount = 100000; private double rate = .075; // 7.5 % private int numPeriods = 30; // Labels to identify the fields private JLabel amountLabel; private JLabel rateLabel; private JLabel numPeriodsLabel; private JLabel paymentLabel; // Strings for the labels private static String amountString = "Loan Amount: "; private static String rateString = "APR (%): "; private static String numPeriodsString = "Years: "; private static String paymentString = "Monthly Payment: "; // Fields for data entry private JFormattedTextField amountField; private JFormattedTextField rateField; private JFormattedTextField numPeriodsField; private JFormattedTextField paymentField; // Formats to format and parse numbers private NumberFormat amountDisplayFormat; private NumberFormat amountEditFormat; private NumberFormat percentDisplayFormat; private NumberFormat percentEditFormat; private NumberFormat paymentFormat; public FormatterFactoryDemo() { super(new BorderLayout()); setUpFormats(); double payment = computePayment(amount, rate, numPeriods); // Create the labels. amountLabel = new JLabel(amountString); rateLabel = new JLabel(rateString); numPeriodsLabel = new JLabel(numPeriodsString); paymentLabel = new JLabel(paymentString); // Create the text fields and set them up. amountField = new JFormattedTextField(new DefaultFormatterFactory( new NumberFormatter(amountDisplayFormat), new NumberFormatter( amountDisplayFormat), new NumberFormatter(amountEditFormat))); amountField.setValue(new Double(amount)); amountField.setColumns(10); amountField.addPropertyChangeListener("value", this); NumberFormatter percentEditFormatter = new NumberFormatter( percentEditFormat) { public String valueToString(Object o) throws ParseException { Number number = (Number) o; if (number != null) { double d = number.doubleValue() * 100.0; number = new Double(d); } return super.valueToString(number); } public Object stringToValue(String s) throws ParseException { Number number = (Number) super.stringToValue(s); if (number != null) { double d = number.doubleValue() / 100.0; number = new Double(d); } return number; } }; rateField = new JFormattedTextField(new DefaultFormatterFactory( new NumberFormatter(percentDisplayFormat), new NumberFormatter( percentDisplayFormat), percentEditFormatter)); rateField.setValue(new Double(rate)); rateField.setColumns(10); rateField.addPropertyChangeListener("value", this); numPeriodsField = new JFormattedTextField(); numPeriodsField.setValue(new Integer(numPeriods)); numPeriodsField.setColumns(10); numPeriodsField.addPropertyChangeListener("value", this); paymentField = new JFormattedTextField(paymentFormat); paymentField.setValue(new Double(payment)); paymentField.setColumns(10); paymentField.setEditable(false); paymentField.setForeground(Color.red); // Tell accessibility tools about label/textfield pairs. amountLabel.setLabelFor(amountField); rateLabel.setLabelFor(rateField); numPeriodsLabel.setLabelFor(numPeriodsField); paymentLabel.setLabelFor(paymentField); // Lay out the labels in a panel. JPanel labelPane = new JPanel(new GridLayout(0, 1)); labelPane.add(amountLabel); labelPane.add(rateLabel); labelPane.add(numPeriodsLabel); labelPane.add(paymentLabel); // Layout the text fields in a panel. JPanel fieldPane = new JPanel(new GridLayout(0, 1)); fieldPane.add(amountField); fieldPane.add(rateField); fieldPane.add(numPeriodsField); fieldPane.add(paymentField); // Put the panels in this panel, labels on left, // text fields on right. setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20)); add(labelPane, BorderLayout.CENTER); add(fieldPane, BorderLayout.LINE_END); } /** Called when a field"s "value" property changes. */ public void propertyChange(PropertyChangeEvent e) { Object source = e.getSource(); if (source == amountField) { amount = ((Number) amountField.getValue()).doubleValue(); } else if (source == rateField) { rate = ((Number) rateField.getValue()).doubleValue(); } else if (source == numPeriodsField) { numPeriods = ((Number) numPeriodsField.getValue()).intValue(); } double payment = computePayment(amount, rate, numPeriods); paymentField.setValue(new Double(payment)); } /** * Create the GUI and show it. For thread safety, this method should be * invoked from the event dispatch thread. */ private static void createAndShowGUI() { // Create and set up the window. JFrame frame = new JFrame("FormatterFactoryDemo"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Add contents to the window. frame.add(new FormatterFactoryDemo()); // Display the window. frame.pack(); frame.setVisible(true); } public static void main(String[] args) { // Schedule a job for the event dispatch thread: // creating and showing this application"s GUI. SwingUtilities.invokeLater(new Runnable() { public void run() { // Turn off metal"s use of bold fonts UIManager.put("swing.boldMetal", Boolean.FALSE); createAndShowGUI(); } }); } // Compute the monthly payment based on the loan amount, // APR, and length of loan. double computePayment(double loanAmt, double rate, int numPeriods) { double I, partial1, denominator, answer; numPeriods *= 12; // get number of months if (rate > 0.001) { I = rate / 12.0; // get monthly rate from annual partial1 = Math.pow((1 + I), (0.0 - numPeriods)); denominator = (1 - partial1) / I; } else { // rate ~= 0 denominator = numPeriods; } answer = (-1 * loanAmt) / denominator; return answer; } // Create and set up number formats. These objects also // parse numbers input by user. private void setUpFormats() { amountDisplayFormat = NumberFormat.getCurrencyInstance(); amountDisplayFormat.setMinimumFractionDigits(0); amountEditFormat = NumberFormat.getNumberInstance(); percentDisplayFormat = NumberFormat.getPercentInstance(); percentDisplayFormat.setMinimumFractionDigits(2); percentEditFormat = NumberFormat.getNumberInstance(); percentEditFormat.setMinimumFractionDigits(2); paymentFormat = NumberFormat.getCurrencyInstance(); }
}</source>