UDPSocketClient.java

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.net.*;

public class UDPSocketClient {
    DatagramSocket Socket;
    public UDPSocketClient() {}   

public void createAndListenSocket() {
    try {

        Socket = new DatagramSocket();
        InetAddress IPAddress = InetAddress.getByName("localhost");
        byte[] incomingData = new byte[1024];
        Student student = new Student(1, "Bijoy", "Kerala");
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        ObjectOutputStream os = new ObjectOutputStream(outputStream);
        os.writeObject(student);
        byte[] data = outputStream.toByteArray();
        DatagramPacket sendPacket = new DatagramPacket(data, data.length, IPAddress, 9876);
        Socket.send(sendPacket);
        System.out.println("Message sent from client");
        DatagramPacket incomingPacket = new DatagramPacket(incomingData, incomingData.length);
        Socket.receive(incomingPacket);
        String response = new String(incomingPacket.getData());
        System.out.println("Response from server:" + response);
        Thread.sleep(2000);
    } catch (UnknownHostException e) {
        e.printStackTrace();
    } catch (SocketException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
}
    public static void main(String[] args) {
    UDPSocketClient client = new UDPSocketClient();
    client.createAndListenSocket();
    }
}