How to check IP Address Type 

Commons Http Client is a HTTP agent implementation in java supporting client-side authentication, HTTP state management and HTTP connection management. This requires the libraries httpclient-4.1.2.jar, httpcore-4.1.2.jar, httpmime-4.1.2.jar, httpclient-cache-4.1.2.jar, commons-codec.jar and commons-logging-1.1.1.jar to be in classpath. The following example shows how to verify whether the given IP is IPv4 or IPv6.

File Name  :   com/bethecoder/tutorials/commons_httpclient/IPAddressTest.java  Author  :   Sudhakar KV Email  :   [email protected]

package com.bethecoder.tutorials.commons_httpclient; import org.apache.http.conn.util.InetAddressUtils; public class IPAddressTest {   /**    * @param args    */   public static void main(String[] args) {     boolean isIPv4 = InetAddressUtils.isIPv4Address("192.168.1.8");     System.out.println(isIPv4);          isIPv4 = InetAddressUtils.isIPv4Address("127.0.0.1");     System.out.println(isIPv4);               boolean isIPv6 = InetAddressUtils.isIPv6Address("FEDC:BA98:7654:3210:FEDC:BA98:7654:3210");     System.out.println(isIPv6);          isIPv6 = InetAddressUtils.isIPv6Address("2001:0db8:85a3:0000:0000:8a2e:0370:7334");     System.out.println(isIPv6);          isIPv6 = InetAddressUtils.isIPv6Address("1080:0:0:0:8:800:200C:417A");     System.out.println(isIPv6);          isIPv6 = InetAddressUtils.isIPv6Address("1080::8:800:200C:417A");     System.out.println(isIPv6);        } }

true
true

true
true
true
true