JJUG CCC 2026 Spring (In-Person Only)
Japan's largest Java community conference, this edition in-person only in Shinjuku (no streaming), with a lightning-talk social afterwards.
- When
- Sat, May 30, 2026 · 09:30–17:15 JST
- Where
- ベルサール新宿グランド コンファレンスセンター, 東京都新宿区西新宿8-17-1 住友不動産新宿グランドタワー 5F · In person
- Region
- Kanto (Tokyo)
- Organizer
- Japan Java User Group
- Language
- JA
- Source
- Doorkeeper
Summary
JJUG CCC 2026 Spring is Japan's largest Java community conference, organized twice a year (spring and autumn) by the Japan Java User Group. Multiple parallel tracks cover Java technologies and production case studies, drawing Java engineers from across industries.
This edition is in-person only, with no live streaming or archived video. The venue is Bellesalle Shinjuku Grand Conference Center in Shinjuku. The full timetable, accepted sessions, and speaker list are published on the official event page and a dedicated web app.
After the sessions wrap up around 18:00, an attendee social and lightning-talk event is planned at the venue (no food provided, separate signup required). The official hashtag is #jjug_ccc, with per-track variants like #jjug_ccc_ab.
About the community
JJUG (Japan Java User Group) is Japan's national Java user community, running the semi-annual JJUG CCC conference each spring and autumn alongside smaller monthly meetups. The conference brings together Java engineers across industries for technical sessions on the language, the JVM, frameworks, and real-world case studies, plus lightning talks and informal networking.
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