JeaIRC is an IRC library written in Java.
It's designed to be simple to use and still contain all the features you need.
You just need to download the library, add it to your project, implement a single Interface and create a new Object of a class and you are ready!
  • Easy to use
  • Open Source
  • Contains all of the basic IRC Commands
  • And some more (e.g. CTCP)