# 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.

This event has ended.

- 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 — https://jjug.doorkeeper.jp/events/196011
- Page: https://japantech.info/events/doorkeeper-196011/

## 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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