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    <p>Basically what you are looking for is a chatroom program? Have you tried looking into mIRC? mIRC is a free internet relay chat. What exactly are the requirements for the program? Is there a certain size that it must be? Are these flash games that you and your friends are playing taking up your full computer screen?</p> <p>Building a program would require a web-server(any computer with internet access would do), and you would have to open the ports on your network to allow the traffic to go through. </p> <p>A basic server in java would look something like this: Please note that after the first connection this "server" will close the connection.</p> <pre><code>import java.net.ServerSocket; import java.net.Socket; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; public class Server { private static ServerSocket serverSocket; private static Socket clientSocket; private static BufferedReader bufferedReader; private static String inputLine; public static void main(String[] args) { // Wait for client to connect on 63400 try { serverSocket = new ServerSocket(63400); while(true){ clientSocket = serverSocket.accept(); // Create a reader bufferedReader = new BufferedReader(new InputStreamReader(clientSocket.getInputStream())); // Get the client message while((inputLine = bufferedReader.readLine()) != null) {System.out.println(inputLine);} serverSocket.close(); System.out.println("close"); } } catch(IOException e) { System.out.println(e); } } } </code></pre> <p>And a client would almost be the same:</p> <pre><code>import java.net.Socket; import java.io.PrintWriter; public class client { private static Socket socket; private static PrintWriter printWriter; public static void main(String[] args) { try { //change "localhost" to the ip address that the client is on, and this number to the port socket = new Socket("localhost",63400); printWriter = new PrintWriter(socket.getOutputStream(),true); printWriter.println("Hello Socket"); } catch(Exception e) { System.out.println(e); } } } </code></pre> <p>If I am not mistaken printWriter is a 16-bit operation, and in order to reduce lag, if you were just sending text then you might want to use printStream(). I believe that this might be a bit quicker.</p>
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