This assignment aims to assess your skills in socket programming, client$-$server communication, and user interface design.

Assignment Instructions

You are tasked with developing a simple online chat application using Java. The application should allow multiple users to connect to a central server, send messages, and receive messages from other users.

Requirements:

Server Implementation:

a$.$ Create a server class,$$ChatServer$,$ using socket programming to manage connections from multiple clients.

b$.$ The server should be able to handle incoming connections, assign a unique user ID to each connected client, and maintain a list of connected users.

Client Implementation:

a$.$ Implement a client class,$$ChatClient$,$ that connects to the server using sockets.

b$.$ Each client should be able to send messages to the server, which will broadcast the messages to all connected clients.

c$.$ Clients should also be able to receive messages from other users.

User Interface:

a$.$ Include a simple text$-$based for the client to facilitate message input and display.