Java 网络编程

package com.StadyJava.day16;
import java.net.InetAddress;
import java.net.UnknownHostException;

public class SetDemo {
    public static void main(String[] args) throws UnknownHostException {

        //通过主机名或者域名来获取IP,我这里根据域名获取
        InetAddress ip=InetAddress.getByName("www.wikipedia.org");
        System.out.println(ip);
        //获取主机名
        System.out.println(ip.getHostName());
        //获取IP
        System.out.println(ip.getHostAddress());
    }
}