UDPClient.java

import java.io.*;
import java.net.*;

class UDPClient {

    public static void main(String args[]) throws Exception {

        BufferedReader inFromUser = new BufferedReader(new InputStreamReader(System.in));
        DatagramSocket clientSocket = new DatagramSocket();
        InetAddress IPAddress = InetAddress.getByName("localhost");

        while (true) {

            byte[] sendData = new byte[10];
            byte[] receiveData = new byte[10];
            System.out.println("Enter data:");
            String sentence = inFromUser.readLine();
            sendData = sentence.getBytes();
            DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, 9877);
            clientSocket.send(sendPacket);
            DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
            clientSocket.receive(receivePacket);
            String modifiedSentence = new String(receivePacket.getData());
            System.out.println("From Server:" + modifiedSentence);
            
        }
        
    }
}