UDPClient.java

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

public class UDPClient {

	public static void main(String[] args) throws Exception{
		DatagramSocket soc = new DatagramSocket(3001);
		DataInputStream rfconsole = new DataInputStream(System.in);
		PrintStream otconsole = new PrintStream(System.out);
		
		//otconsole.print("Client: ");
		//String s = rfconsole.readLine();
		while(true){
			
			byte[] b = new byte[100];
			DatagramPacket dp = new DatagramPacket(b,b.length);
			soc.receive(dp);
			b = dp.getData();
			String s = new String(b,0,dp.getLength());
			otconsole.println("Server: " + s);
			if(s.equals("exit"))
				break;
			
			otconsole.print("Client: ");
			String s2 = rfconsole.readLine();
			b = s2.getBytes();
			dp = new DatagramPacket(b,b.length,InetAddress.getByName("localhost"),3000);
			soc.send(dp);
			if(s2.equals("exit"))
				break;
		}
			
		soc.close();
		

	}

}