This event has ended.

JJUG CCC 2026 Spring (In-Person Only)

Name: JJUG CCC 2026 Spring (In-Person Only)
Start: 2026-05-30T09:30:00+09:00
End: 2026-05-30T17:15:00+09:00
Location: 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

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

Open in Doorkeeper

Next from Japan Java User Group

JJUG CCC 2026 Fall: On-site Volunteer Staff Wanted

Volunteer staff and staff leaders wanted to help run JJUG CCC 2026 Fall, Japan's Java community conference, on Nov 28 in Shinjuku.

In person Kanto (Tokyo) JA

Open in Doorkeeper Calendar

Similar upcoming events

JJUG CCC 2026 Fall (in-person only)

Japan's largest Java community conference: multi-track sessions in Shinjuku plus an evening LT party. In-person only, no streaming.

In person Kanto (Tokyo) JA

Open in Doorkeeper Calendar

JJUG CCC 2026 Fall Lightning Talks: Call for Speakers

Call for speakers for 3-minute lightning talks at the JJUG CCC 2026 Fall networking session, on Java, engineering or community topics.

In person Kanto (Tokyo) JA

Open in Doorkeeper Calendar

Business In Japan 100K Members Celebration Party

Party in Tokyo celebrating 100,000 Business In Japan members, with catering, live music and networking in English or Japanese.

In person Kanto (Tokyo) JA/EN

Open in Doorkeeper Calendar

See all upcoming events →

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.

#java#jvm#conference#community#lightning-talks#shinjuku#tokyo#software-engineering