public static void main(String[] args) {    try {        InetAddress address = InetAddress.getLocalHost();//获取的是本地的IP地址 //PC-20140317PXKX/192.168.0.121        String hostAddress = address.getHostAddress(); //192.168.85.7        System.out.println("本地："+hostAddress);        InetAddress address1 = InetAddress.getByName("my.oschina.net");//获取的是该网站的ip地址，比如我们所有的请求都通过nginx的，所以这里获取到的其实是nginx服务器的IP地        String hostAddress1 = address1.getHostAddress();//139.199.91.153        System.out.println(hostAddress1);        InetAddress[] addresses = InetAddress.getAllByName("www.baidu.com");//根据主机名返回其可能的所有InetAddress对象        for(InetAddress addr:addresses){            System.out.println(addr);//www.baidu.com/14.215.177.38            //www.baidu.com/14.215.177.37        }    } catch (UnknownHostException e) {        e.printStackTrace();    }}