Scientific Programming II

Programming in Java

Networking Assignment

Problem 1

Extend the second Server/Client example to have unique usernames. Right now, any Client can have any username, even one chosen by an already connected Client. You need not display an error message to the Client, but you can.

Problem 2

Extend Problem 1 to properly remove a client when they disconnect. You may need to extend ChatResponse, and explore the method addWindowListener(WindowAdapter) on JFrame.