网络编程中获取域名和id的方法

package com.lanqiao.java.test;

import java.net.InetAddress;
import java.net.UnknownHostException;

public class testInetAddress {

public static void main(String[] args) throws Exception {
InetAddress inet=InetAddress.getByName("www.atguigu.com");//通过域名获取

System.out.println(inet);//获取域名和ip
System.out.println(inet.getHostName());//获取ip地址对应的域名
System.out.println(inet.getHostAddress());//获取ip地址
System.out.println();

InetAddress inet1=InetAddress.getLocalHost();//获取本机的ip，域名
System.out.println(inet1);
System.out.println(inet1.getHostName());//获取本机域名
System.out.println(inet1.getHostAddress());//获取本机的ip地址
}

}