A simple group chat application using Java

A demo with three users in the group chat

background

• A GUI application for studying client-server, socket, threadpool, and concurrency
  • It uses java swing to create user interface, and applies client-server to support multi-users group chat.
  • It set a fixed thread pool with 10 threads, you can increase it if you need more.
  • this project is inspired by the two blogs.
    • check out reference1
    • check out reference2

functionalities

• Connection panels with hostIP and port

  • support client and server connect and disconnect.
  • all disconnected
  • server ON
  • one user ON

• connection status bar

  • support status report on connecting: connected, disconnected, etc.

• chatter name selection

  • support name for each connected chatter
  • keep asking for name if input name is not unique

• total chatters online

  • support display of the number of current chatters in the room

• message formatting

  • support system messages with blue color shown in the middle
  • support other chatters messages shown on the left of the panel
  • support self message display on the right side

• multi-users group chat

  • support multiple users join, leave, and rejoin

Happy exploring! Star if you like it!