package com.sjf;import java.net.Inet4Address;import java.net.Inet6Address;import java.net.InetAddress;import java.net.NetworkInterface;import java.net.UnknownHostException;import java.util.Enumeration;/** *  * @author sjf0115 * */public class InetAddressExample {
         public static void main(String[] args)    {        // Get the network interfaces and associated for this host        try        {            NetworkInterface networkInterface = null;            // 获得该主机每一个接口的信息            Enumeration
     
       interfaceList = NetworkInterface.getNetworkInterfaces();            if(interfaceList == null)            {                System.out.println("--No interfaces found--");            }//if            else            {                while(interfaceList.hasMoreElements())                {                     networkInterface = interfaceList.nextElement();                     // 接口名称                     System.out.println("Interface->"+networkInterface.getName());                     // 获取与接口相关联的地址 根据主机的不同配置 可能包含IPV4或IPV6地址                     Enumeration
      
        inetAddressList = networkInterface.getInetAddresses();                     if(inetAddressList == null)                     {                         System.out.println("--No address for this NetworkInterface--");                     }//if                     else                     {                         InetAddress address = null;                         while(inetAddressList.hasMoreElements())                         {                             address = inetAddressList.nextElement();                             // 对每个地址进行检测判断属于哪个IP地址子类                             System.out.print(address instanceof Inet4Address ? "(v4)" : (address instanceof Inet6Address ? "(v6)" : "(?)"));                             // 打印IP地址                             System.out.println(":"+address.getHostAddress());                         }//while                     }                }//while            }        }        catch (Exception e)         {        }        String host = "www.baidu.com";        try         {            // 一个名字可能关联了多个数字地址 该方法返回一组与给定主机名相关联的所有地址的实例            InetAddress[] addressesList = InetAddress.getAllByName(host);            for(InetAddress address : addressesList)            {                System.out.println(address.getHostName()+"  "+address.getHostAddress());            }//for            // Determines the IP address of a host, given the host's name.            InetAddress address2 = InetAddress.getByName(host);            System.out.println(address2.getHostName()+" "+address2.getHostAddress());            // Returns the local host.            InetAddress address3 = InetAddress.getLocalHost();            System.out.println(address3.getHostName()+" "+address3.getHostAddress());        }         catch (UnknownHostException e)         {            e.printStackTrace();        }    }}