InetAddress

package test;import java.io.IOException;import java.net.InetAddress;public class Test {        public static void main(String[] args) throws IOException {    String url="www.baidu.com";//不知为什么加上http://报错    InetAddress address=InetAddress.getByName(url);    System.out.println("baidu的IP地址：" + address.getHostAddress()) ;    }           /**     *baidu的IP地址：119.75.217.109     */}