UDP GET AND POST

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.util.Scanner;

public class POST {
    private DatagramSocket udpSocket;
    private InetAddress serverAddress;
    private int port;
    private Scanner scanner;
   
    private POST(String destinationAddr, int port) throws IOException {
        this.serverAddress = InetAddress.getByName(destinationAddr);
        this.port = port;
        udpSocket = new DatagramSocket(this.port);
        scanner = new Scanner(System.in);
    }
   
    public static void main(String[] args) throws NumberFormatException, IOException {       
        POST sender = new POST("192.168.1.3", 8215);
        System.out.println("-- Running UDP Client at " + InetAddress.getLocalHost() + " --");
        sender.start();
    }
    private int start() throws IOException {
        String in;
//        while (true) {
//            in = scanner.nextLine();
       
String quote="WHAT";
  byte[] buffer = quote.getBytes();
 
            DatagramPacket p = new DatagramPacket(quote.getBytes(), quote.getBytes().length, serverAddress, port);
           
            this.udpSocket.send(p);                   
        //}
        return 0;
    }
}





======================

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
public class GET {
    private DatagramSocket udpSocket;
    private int port;

    public GET(int port) throws SocketException, IOException {
        this.port = port;
        this.udpSocket = new DatagramSocket(this.port);
    }
    private void listen() throws Exception {
        System.out.println("-- Running Server at " + InetAddress.getLocalHost() + "--");
        String msg;
       
        while (true) {
           
            byte[] buf = new byte[256];
            DatagramPacket packet = new DatagramPacket(buf, buf.length);
           
            // blocks until a packet is received
            udpSocket.receive(packet);
            msg = new String(packet.getData()).trim();
           
            System.out.println(
                "Message from " + packet.getAddress().getHostAddress() + ": " + msg);
        }
    }
   
    public static void main(String[] args) throws Exception {
        GET client = new GET(8212);//Integer.parseInt(args[0]));
        client.listen();
    }
}