总结::不懂。。。
package com.aa; import java.net.*; public class InetAddresTest { public static void main(String[] args) throws UnknownHostException { InetAddress ia; ia = InetAddress.getByName("www.baidu.com"); System.out.println("百度网的ip是" + ia.getHostAddress()); ia = InetAddress.getByName("www.qq.com"); System.out.println("腾讯的主机地址是:" + ia.getHostAddress()); ia = InetAddress.getLocalHost();// localhost.指的是本机 System.out.println("本机ip是:" + ia.getHostAddress()); } } 百度网的ip是115.239.210.27 腾讯的主机地址是:101.226.129.158 本机ip是:27.18.219.15