MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;

public class MainClass {

    public static void main(String[] args) throws Exception {
        String hostname = "localhost";
        InetAddress ia = InetAddress.getByName(hostname);
        SenderThread sender = new SenderThread(ia, 1919);
        sender.start();
        Thread receiver = new ReceiverThread(sender.getSocket());
        receiver.start();
    }

}

class SenderThread extends Thread {

    private InetAddress server;

    private DatagramSocket socket;

    private boolean stopped = false;

    private int port;

    public SenderThread(InetAddress address, int port) throws SocketException {
        this.server = address;
        this.port = port;
        this.socket = new DatagramSocket();
        this.socket.connect(server, port);
    }

    public void halt() {
        this.stopped = true;
    }

    public DatagramSocket getSocket() {
        return this.socket;
    }

    public void run() {

        try {
            BufferedReader userInput = new BufferedReader(new InputStreamReader(System.in));
            while (true) {
                if (stopped)
                    return;
                String theLine = userInput.readLine();
                if (theLine.equals("."))
                    break;
                byte[] data = theLine.getBytes();
                DatagramPacket output = new DatagramPacket(data, data.length, server, port);
                socket.send(output);
                Thread.yield();
            }
        } catch (IOException ex) {
            System.err.println(ex);
        }
    }
}

class ReceiverThread extends Thread {
    DatagramSocket socket;

    private boolean stopped = false;

    public ReceiverThread(DatagramSocket ds) throws SocketException {
        this.socket = ds;
    }

    public void halt() {
        this.stopped = true;
    }

    public void run() {
        byte[] buffer = new byte[65507];
        while (true) {
            if (stopped)
                return;
            DatagramPacket dp = new DatagramPacket(buffer, buffer.length);
            try {
                socket.receive(dp);
                String s = new String(dp.getData(), 0, dp.getLength());
                System.out.println(s);
                Thread.yield();
            } catch (IOException ex) {
                System.err.println(ex);
            }
        }
    }
}