java如何获取IP地址

import java.net.Inet6Address;

import java.net.InetAddress;

import java.net.NetworkInterface;

import java.net.SocketException;

import java.util.Enumeration;

public class GetMacIp
{

/**

* @Title: main

* @Description: TODO

* @param :@param
args

* @return :void

* @throws

*/

public static void main(String[]
args) {

String currentIP= null;

Enumeration<?> e1;

try {

e1 = (Enumeration<?>)
NetworkInterface.getNetworkInterfaces();

while (e1.hasMoreElements())
{

NetworkInterface ni = (NetworkInterface) e1.nextElement();

if (!ni.getName().equals("eth3" )) {

continue;

} else {

Enumeration<?> e2 = ni.getInetAddresses();

while (e2.hasMoreElements())
{

InetAddress ia = (InetAddress) e2.nextElement();

if (ia instanceof Inet6Address)
{

continue;

}

currentIP = ia.getHostAddress();

}

System. out.println("======" +currentIP);

break;

}

}

} catch (SocketException
e) {

e.getMessage();

}

}

}