InetAddressTest

import java.net.*;
/**
 * Description:
 * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a>
 * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author Yeeku.H.Lee [e-mail]
 * @version 1.0
 */
public class InetAddressTest
{
public static void main(String[] args)
throws Exception
{
// 根据主机名来获取对应的InetAddress实例
InetAddress ip = InetAddress.getByName("www.crazyit.org");
// 判断是否可达
System.out.println("crazyit是否可达：" + ip.isReachable(2000));
// 获取该InetAddress实例的IP字符串
System.out.println(ip.getHostAddress());
// 根据原始IP地址来获取对应的InetAddress实例
InetAddress local = InetAddress.getByAddress(
new byte[]{127,0,0,1});
System.out.println("本机是否可达：" + local.isReachable(5000));
// 获取该InetAddress实例对应的全限定域名
System.out.println(local.getCanonicalHostName());
}
}