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import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
public class Main {
final private static int DAYTIME_PORT = 13;
public static void main(String args[]) throws IOException {
String host = args[0];
byte message[] = new byte[256];
InetAddress address = InetAddress.getByName(host);
System.out.println("Checking at: " + address);
DatagramPacket packet = new DatagramPacket(message, message.length, address, DAYTIME_PORT);
DatagramSocket socket = new DatagramSocket();
socket.send(packet);
packet = new DatagramPacket(message, message.length);
socket.receive(packet);
String time = new String(packet.getData());
System.out.println(time);
socket.close();
}
}
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