Java——InetAddress类

一、InetAddress：互联网协议 (IP) 地址；java.net包；

二、获取对象方法：

　　//没有构造方法；

（1）static InetAddress getLocalHost()；获取本机IP地址；//InetAddress lh = InetAddress.getLocalHost();

（2）static InetAddress getByName(String host)；根据主机名获取IP地址；

（3）static InetAddress[] getAllByName(String host)；根据主机名获取多个IP地址；

public class Test {
    public static void main(String[] args) throws UnknownHostException {
        InetAddress localHost = InetAddress.getLocalHost();
        System.out.println(localHost);
        InetAddress byName = InetAddress.getByName("DESKTOP");
        System.out.println(byName);
        InetAddress[] allByName = InetAddress.getAllByName("DESKTOP");
        System.out.println(Arrays.toString(allByName));
    }
}

三、方法：

（1）String getHostName()；获取此IP的主机名；//lh.getHostName();

（2）String getHostAddress()；获取IP的字符串类型；

public class Test {
    public static void main(String[] args) throws UnknownHostException {
        InetAddress localHost = InetAddress.getLocalHost();
        System.out.println(localHost.getHostName());  //DESKTOP
        System.out.println(localHost.getHostAddress());  //192.168.0.0
    }
}