Java示例从IP地址查找主机名

import java.net.InetAddress;

import java.net.UnknownHostException;



public class NewClass1 {

   public static void main(String[] args) {

      InetAddress ip;

      String hostname;

      try {

         ip = InetAddress.getLocalHost();

         hostname = ip.getHostName();

         System.out.println("Your current IP address : " + ip);

         System.out.println("Your current Hostname : " + hostname);

      } catch (UnknownHostException e) {

         e.printStackTrace();

      }

   }

}