网络编程 IP地址

import java.net.*;

public class IPDemo {

public static void main(String[] args) throws Exception

{

InetAddress i=InetAddress.getLocalHost();

/*                            * 输出本机的主机名和IP地址                            */

//System.out.println(i.toString());

/*                            * 输出本机IP地址                              */

//System.out.println("address:"+i.getHostAddress());

/*                            * 输出本机的主机名                            */

//System.out.println("name:"+i.getHostName());

/*                            * 任意主机IP地址                            */

InetAddress ia=InetAddress.getByName("192.168.3.125");

/*                            * 输出该本机的IP地址                            */

System.out.println("address:"+i.getHostAddress());

/*                            * 输出该本机的主机名                            */

System.out.println("name:"+i.getHostName());

}

}