JJUG CCC is the largest Java community event organized by Japan Java User Group (JJUG), held twice a year in spring and autumn. It provides great sessions of Java-related technologies and practices and brings together Java engineers from different disciplines.

Let's all get together and have a lively discussion about Java!

The venue is Bellesalle Shinjuku Grand Conference Center.

◎Date

• 15th Nov. 2025 (Sat) 10:00 AM - 05:15 PM JST

◎Event page

• TBD

◎Sessions

• Sessions
• Speakers
• Timetable: TBD

◎Web App

• TBD

◎Agreement on our Code of Conduct

All attendances of JJUG CCC 2025 Fall must agree and obey our Code of Conduct in the following:
- JJUG CCC Code of Conduct

◎Feedbacks

Please send us your feedback on the event and each session.
- For the event: TBD((https://forms.gle/LFnGoVzJDZnmpH2z5))
- For each session: TBD

◎HashTag

• #jjug_ccc
  • We will also use separate hashtags for each track like #jjug_ccc_ab, #jjug_ccc_e, etc...