I presented a talk on the different Java artificial intelligence frameworks at the monthly RJUG meeting. The presentation focused on JOONE, but also contained demos of JESS and a brief overview of JGAP. I have used both JOONE (artifical neural networks) and JESS (expert systems) for course projects. My slides from the presentation are available here. Two JOONE code examples were presented: XOR and RJUG Attendance Predictor (requires joone-engine.jar).