Pemrograman Jaringan Dengan Java (whois)

Menampilkan IP

import java.net.*;

public class whois{

public static void main(String args[]){

if(args.length == 0){

System.out.println("Pemakaian : java IPtoName <IP Address>");

System.exit(0);

}

String host = args[0];

InetAddress address = null;

try{

address = InetAddress.getByName(host);

}catch(UnknownHostException e){

System.out.println("invalid IP");

System.exit(0);

}

System.out.println(address.getHostName());

}

}

Hasil Program :