import java.io.*; 
import java.net.*; 
/**
 * @author K&R
 * Simple example UDP client
 */
public class UDPClient
{
   public static void main(String args[]) throws Exception
   {
      int bufferLength = 1024;

      BufferedReader inFromUser =
         new BufferedReader(new InputStreamReader(System.in));

      DatagramSocket clientSocket = new DatagramSocket();

      InetAddress IPAddress = InetAddress.getByName("localhost");

      byte[] sendData;
      byte[] receiveData = new byte[bufferLength];

      String sentence = inFromUser.readLine();
      sendData = sentence.getBytes();
      DatagramPacket sendPacket =
         new DatagramPacket(sendData, sendData.length, IPAddress, 9876);

      clientSocket.send(sendPacket);

      DatagramPacket receivePacket =
         new DatagramPacket(receiveData, receiveData.length);

      clientSocket.receive( receivePacket );

      String modifiedSentence = new String(receivePacket.getData(), 0, receivePacket.getLength());

      System.out.println("FROM SERVER:" + modifiedSentence);
      clientSocket.close();
   }
}