JJUG CCC 2026 Spring (In-Person Only)
One of Japan's largest Java community conferences, in-person only in Shinjuku, with multi-track sessions plus an evening lightning-talk social.
- 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 one of Japan's largest Java community conferences, run twice a year (spring and autumn) by the Japan Java User Group. It takes place at Bellesalle Shinjuku Grand Conference Center in Nishi-Shinjuku, with multiple tracks of talks on Java technology and real-world use cases running from 9:30 to 17:15.
This edition is in-person only, with no live stream or recorded archive. The accepted sessions, speaker list, and timetable are published on the official page and a dedicated web app. Free childcare is offered to conference attendees who register in advance.
After the last session (around 18:00), a participant social and lightning-talk event will be held at the venue, giving Java engineers from different domains a chance to meet face to face. The main hashtag is #jjug_ccc, with per-track tags in the form #jjug_ccc_${track}.
About the community
JJUG (Japan Java User Group) is a community for Java engineers in Japan, and its flagship Cross Community Conference (CCC) runs twice a year in spring and autumn. The event brings together Java practitioners from web, enterprise, library, and tooling backgrounds for technical sessions, lightning talks, and an in-person social.
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