A chat application

The goal of this project is to build a UDP-based chat application. At a high level, at least two people need to start a chat session though multiple people can join the chat session. The application should start with a single chat room that multiple people can join. The chat room should have a known IP address that other can use to join the chat. Anyone should be allowed to join that requests to join and all members should be able to see all the chat messages from each member in the group. No private chat rooms allowed. At any one time only one member can chat. The application can be a command-line application or a graphical user based application. You can use Java, C/C++ to write the application.