International Java Community Conference
at Cinedom Multiplex Cinema in Cologne, Germany

2024 May13-16

About JCON EUROPE 2024

JCON EUROPE 2024 is the in-person Java community conference in Germany organized by the Java User Group Oberpfalz in cooperation with JAVAPRO Magazine. Java is our profession and JCON is our passion and a lot of fun. We love to provide Java developers with a spectacular 100 % live conference open to the entire Java-User-Group communities.

In 2023, more than 1,000 participants from 34 countries and five continents had joined the JCON EUROPE 2023.

The 9th JCON edition is presented as an in-person conference – again in a multiplex cinema so that you can watch code on the BIG screen! We have summarized all information about the location and how to get there here:


Focus on Core Java & Cloud-Native Java
JCON traditionally focuses on Core Java, Serverside Java, APIs and Frameworks because that’s what we as Java developers work with every day. However, the main topic will be Java-Cloud-Native and Microservices, because this is the future of Java and a must-have for Java developers.

parallel streams
live sessions

Well organized and a great location. I love the cinema environment. Absolutely awesome! It felt like the whole organizing team really cared about every single attendee and speaker.

„ JCon offered a fantastic opportunity to meet people I had previously only known online, allowing for meaningful in-person connections. The event excelled in bringing together speakers from around the world, making it a truly global gathering. The impressive venue, featuring a large hall and a huge screen, added to the overall experience and created a captivating atmosphere. The positive energy and enthusiasm felt throughout the event made it a memorable and enjoyable experience. Based on these highlights, it would be highly beneficial to continue organizing JCon in the future.”

“Great venue with good seating. I really liked that there were multiple food options and a great assortment of cooled drinks available in the fridges. The speaker support was really good as well. Clear communication up front and good support from the people in the room. Everything just worked. Great to see.”

"I really liked the location with its high ceilings and a lot of natural light as well as good food options and a little park close by."

“The attendees! The vibe! The organizing staff! I was really blown away by the warm, thoughtful people I met and the great conversations I had. Not sure if there's a way to keep this around, other than I met a lot of great speakers so invite them back. I also appreciated that there were more women attendees than in some conferences I've been to. Thank you for a great event and all your care that you put into it.”

“The people. The audience was engaged with the talks, other speakers were great, crew was friendly and helpful. Thanks for having me!”

“The venue was magnificent! It was fun seeing old friends too.”

“I enjoyed the fact that is was not a commercial but community driven event. There were interesting speakers you don't find on other more international and commercial conferences”

“The organization, the shirts, and the food were great, with a wide selection; the beverages were everywhere at the gatherings and parties. And there were a lot of speakers. Overall, it was a great experience. I would love to join again”

“The location, the easiness of registration, the dinner, the friendliness and approachability of the organizers“

“The cinema location was great, the cinemas are great for the speakers and the huge screens are very nice for the audience. The free chilled drinks where also awesome. I liked that the JCON team tried immediately to fix all upcoming issues, everyone was very engaged to make it a good experience for everyone.”

JCON EUROPE was an incredible experience! The organization team was very friendly and helpful! I really like the aspect of a conference from the community for the community. The location, with its close proximity to the cinemas and exhibition areas, created a dynamic atmosphere for natural networking. Thanks for this great time!



Cinedom Cologne, Germany

The awesome food variation at JCON EUROPE 2023

around Cinedom, Cologne

JCON Content Board

Sandra Ahlgrimm

Cloud Advocate at Microsoft

Sven Ruppert

Developer Advocate at JFrog

Matthias Gutheil

Software Architect at itemis

Sascha Hesse

Enterprise Architect Cloud at Danfoss

Werner Keil

Director, Creative Arts & Technologies

Reza Rahman

Principal Program Manager, Java on Azure at Microsoft

Markus Kett

JAVAPRO Magazin Editor in Chief
CEO at MicroStream

Brian Demers

Developer Advocate at Gradle

Emily Jiang

IBM, Lead development architect for MicroProfile and CDI

Kito Mann

Principal Consultant, Virtua, Inc.

Marcus Hellberg

VP of Developer Relations at Vaadin

Richard Fichtner

Founder JUG Oberpfalz, CEO of XDEV Software

Mary Grygleski

Streaming Developer Advocate at DataStax, Java Champion, President of Chicago-JUG

Grace Jansen

IBM, Developer Advocate

Nicolas Fränkel

Developer Advocate for Apache APISIX

Our Sponsors 2024

Since the start of JCON, it has been the continuous support from companies and organizations partnering with us to help create events that bring the Java community together. We thank each and every one of our partners for their fantastic support! Please take a few minutes to learn about our partners and let them know you appreciate their support of our community! 


Store and load any Java Object Graph or Subgraphs partially, Relieved of Heavy-weight JPA. Microsecond Response Time. Ultra-High Throughput. Minimum of Latencies. Create Ultra-Fast In-Memory Database Applications & Microservices.


XDEV Software GmbH, based in Weiden/Bavaria, is a German software development company specializing in Java. Among other things, XDEV is the maintainer of various open-source developer tools.

RapidClipse X is a visual Java development environment for the fast and efficient development of individual business applications. Save up to 90% development time.


Easily manage Call for Papers, Speakers and Agenda for your conference!

Event management software for in-person, hybrid, and virtual events that’s quick to learn and easy to set up.


Java User Group Oberpfalz is an open community to exchange ideas on current topics relating to the application of Java technology in Bavaria / Germany.

We offer contacts and exchanges within the regional Java community and regular talks and discussions on current Java topics.

JAVAPRO is the very first professional magazine for Java which is free of charge.

Our Partners

JCON EUROPE 2024 offers discounted tickets for Java User Group members, students and hobbyists.
Send us your Logo and your JUG website / meetup page URL. Of course, it’s free of charge.



We love Java. That’s why we want to bring together Java developers from all over the world. To learn, to connect, to have fun. The feedback we receive proves us right and motivates us to keep going.


JCON is a team effort and a conference by developers for developers. The JUG Oberpfalz does the heavy lifting in organizing everything. But the heart of the conference are our speakers with their sessions.


We often work in completely different branches, but Java is our common denominator and connects us all. Over the years, not only acquaintances but friendships have formed on account of JCON!


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We are looking for organizations that want to partner with us. So, if you know someone who loves the Java community just as much as we do, please get in touch: