i have attached an example of a basic client/server app connection working for y
i have attached an example of a basic client/server app connection working for you to understand what you have to do. To run it, you must open the JavaClient app and JavaServer app in 2 different Eclipse IDE workspaces. You run the server first, then the client
The example only shows the connection between one client and the server but remember that the chat application you are working on has to accept connections from multiple clients to a server. Follow the proper assignment instructions and go through the example i sent you to see how you have to make the multi-client/server connection and do not forget the the JavaClient app has to be a GUI designed group chat and the JavaServer which is a separate file that accepts the connection from the clients when they enter the username and IP address .