【Postponed】JOnsen 2020


About JOnsen 2020

JOnsen is an unconference for Java engineers.

This unconference is held for Java Developers, Java Communities in Japan and all over the world. You can enjoy the most relaxed Java Unconference in the world!

JOnsen 2020 will be held in Hoshino Resorts Aomoriya in Aomori Prefecture. Aomori Prefecture is located in the northernmost of the main island(Honshu) of Japan and has beautiful nature, delicious food, and some traditional cultures.

Anyone who wants to attend JOnsen Unconference, please submit this registration.
The space for attendees is limited, thus we may choose attendees after the registration is closed if we received many registrations. You can attend this event ONLY when you receive the approval email sent from JJUG (Japan Java User Group), not from Doorkeeper. We'll send the approval email by 5th April.

We will charge each attendee for 15,000 JPY (140 USD), which includes

  • Accommodation costs (2 nights)
  • Breakfast and Dinner

Transportation and lunch are not included. Please arrange them by yourself.
(We may share restaurants around the venue for lunch later)

Check Payment part below also.

Draft Schedule

Date Time Content
5/29(fri) 14:00 Meeting up at Aomoriya
14:30-15:00 Opening
15:00- Unconference 1
18:00- Dinner
5/30(Sat) 8:00- Breakfast
10:00- Unconferene 2
12:00- Lunch
13:00- Unconference 3
15:00- Activities
19:00- Dinner
5/31(Sun) 8:00- Breakfast
10:00- Unconference 4
12:00- Lunch and Break up


The payment detail will be announced in the approval email.
At the moment, we're considering following, but please be aware it's not fixed yet.

  • The payment methods: Stripe
  • The payment deadline: 30th April (Anywhere on Earth!)
  • The approval email will be sent to you by 5th April :)

official site



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