Java/Regular Expressions/IP Address

Regex for IP v4 Address

   <source lang="java">

/*

* $HeadURL: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/conn/util/InetAddressUtils.java $
* $Revision: 652020 $
* $Date: 2008-04-27 22:23:31 +0100 (Sun, 27 Apr 2008) $
* 
* 
* 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.
* 
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation.  For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/

import java.util.regex.Pattern; /**

* A collection of utilities relating to InetAddresses.
*/

public class InetAddressUtils {

   private InetAddressUtils() {
   }
   
   private static final Pattern IPV4_PATTERN = 
       Pattern.rupile(
               "^(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}$");
   private static final Pattern IPV6_STD_PATTERN = 
       Pattern.rupile(
               "^(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}$");
   private static final Pattern IPV6_HEX_COMPRESSED_PATTERN = 
       Pattern.rupile(
               "^((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)::((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)$");
   public static boolean isIPv4Address(final String input) {
       return IPV4_PATTERN.matcher(input).matches();
   }
   public static boolean isIPv6StdAddress(final String input) {
       return IPV6_STD_PATTERN.matcher(input).matches();
   }
   
   public static boolean isIPv6HexCompressedAddress(final String input) {
       return IPV6_HEX_COMPRESSED_PATTERN.matcher(input).matches();
   }
   
   public static boolean isIPv6Address(final String input) {
       return isIPv6StdAddress(input) || isIPv6HexCompressedAddress(input); 
   }

}

 </source>
   
  
 
  

Regex for IP v6 Address

   <source lang="java">

/*

* $HeadURL: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/conn/util/InetAddressUtils.java $
* $Revision: 652020 $
* $Date: 2008-04-27 22:23:31 +0100 (Sun, 27 Apr 2008) $
* 
* 
* 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.
* 
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation.  For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/

import java.util.regex.Pattern; /**

* A collection of utilities relating to InetAddresses.
*/

public class InetAddressUtils {

   private InetAddressUtils() {
   }
   
   private static final Pattern IPV4_PATTERN = 
       Pattern.rupile(
               "^(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}$");
   private static final Pattern IPV6_STD_PATTERN = 
       Pattern.rupile(
               "^(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}$");
   private static final Pattern IPV6_HEX_COMPRESSED_PATTERN = 
       Pattern.rupile(
               "^((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)::((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)$");
   public static boolean isIPv4Address(final String input) {
       return IPV4_PATTERN.matcher(input).matches();
   }
   public static boolean isIPv6StdAddress(final String input) {
       return IPV6_STD_PATTERN.matcher(input).matches();
   }
   
   public static boolean isIPv6HexCompressedAddress(final String input) {
       return IPV6_HEX_COMPRESSED_PATTERN.matcher(input).matches();
   }
   
   public static boolean isIPv6Address(final String input) {
       return isIPv6StdAddress(input) || isIPv6HexCompressedAddress(input); 
   }

}

 </source>