how to connect and sends data betweens many computers using Java networking <p>I am beginner of learning Java Networking.I want to connect 3 or more computers. One for server and others(eg A and B )for clients .But I want to connect </p> <ol> <li>A to Server and vise versa</li> <li>B to Server and vise versa</li> <li>A to B and vise versa</li> </ol> <p>First I want to send message from either A or B to server and server sends stored data to sender (eg A) and sender (A) will connect to B. Then A and B will confirm message and A and B will send data one to another. But this occasion can occurs from A and B concurrently. </p> <p>But I just learned simple code for connection of one server and one client using Server socket and socket. Will all 3 computers require to act for both server and client? Is there other ways to connect between clients. I don't know how to consider to solve data conflict between computers. I also want to satisfy if new clients are added. If anyone know to solve above problem including data conflicts, pls help me with simple sample code for both server and clients. </p> <p>Thanks !!</p>