Game Developers Java Users Group (GameJUG)
- Mailing lists signup, membership information, resources, and links.
- https://gamejug.dev.java.net/

Java User Groups Worldwide
- Sun's JUG page includes index of groups worldwide as well as a finder program.
- http://community.java.net/jugs/

Java Robotics Users Group (JRUG)
- Online group for those interested in the application of the Java programing language for robotics. Includes news, FAQs, and project information.
- http://www.java-robotics.org/

Java Meetup Groups
- Find groups in your area. Includes directory, photos, and message board.
- http://java.meetup.com/