Thank you to all the incredible speakers, sponsors and attendees who made JCON EUROPE an outstanding event!
We're excited to let you know, that our next big event will be this year in November called JCON WORLD ONLINE! Our big International ONLINE Java Community Conference.

About The Conference

JCON EUROPE: Embrace your Java Journey.

Dive into the pulsating heart of the Java community at JCON EUROPE 2024, the premier in-person Java community conference in Germany, lovingly organized by the Java User Group Oberpfalz in collaboration with JAVAPRO Magazine.

What's in it for you?


✓ Meet Kindred Spirits Eager to Connect
✓ Personal 1-on-1 Sessions
✓ Unique Cinema Setting for an Immersive Experience


✓ From Developers for Developers
✓ Live Coding On Giant Movie Screens
✓ Hands-on Frameworks And Cases
✓ Future Tech Insights and Previews


✓ Top-notch Speakers
✓ Inspiring Keynotes & High Level Content
✓ Practice-oriented Workshops
✓ Topics Relevant to Your Daily Work

Four Days Bursting with Inspiration and Know-How

Java isn't just our profession; it's our passion and our joy. We're thrilled to offer Java developers – beginners and pros – an amazing, 100 % live conference experience that welcomes you with open arms.

Last year, we set the bar high: Attendees from 34 countries and five continents gathered at JCON EUROPE 2023. This year, we're aiming to go even further.

Whether you're here to refine your craft or to explore new horizons within the Java landscape, our incredible speakers are dedicated to empowering you with the knowledge and inspiration you need.

Experience Java on the Big Screen & Meet the Speakers

The 9th edition of JCON unfolds as an in-person conference, once again set within a multiplex cinema in Cologne, offering you the chance to witness code on giant screens! You finally won't miss a thing: we transform coding and programming into a cinematic spectacle, ensuring that every detail of our incredible speakers is showcased in its full glory.

You even have the opportunity as an attendee to schedule one-on-one appointments with speakers, fostering a unique environment for personalized learning and direct engagement.

Spotlight on Cloud-Native Java & Microservices

JCON traditionally shines a light on Core Java, Serverside Java, APIs, and Frameworks, as this is the realm we, as Java developers, navigate every day. However, this year's spotlight is on Java-Cloud-Native and Microservices, heralding the future of Java and becoming a must-have for every Java developer eager to stay relevant in the ever-evolving world of technology.

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!

Impressions of last JCONs

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

From the inception of JCON, it's been a journey illuminated by the unwavering support of visionary companies and organizations that share our passion for Java. Together, we've created not just an event, but memorable experiences that unite our vibrant community. We extend our heartfelt gratitude to every partner for their incredible 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.

As a global tech leader delivering enterprise innovation, Oracle’s mission is to help people see data in new ways, discover insights, and unlock endless possibilities. From Oracle Database, Java, GraalVM and more, Oracle seeks to serve a transforming world to help our customers do amazing things.

The Eclipse Foundation provides our global community of individuals and organisations with a mature, scalable, and business-friendly environment for open source software collaboration and innovation. Learn more at


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.


Develocity speeds up builds and tests for Maven & Gradle by up to 90%. It enables rapid troubleshooting for failures, flaky tests, and performance bottlenecks, and provides dashboards for seeing everything that goes on in your build. Get started with a FREE Develocity Build Scan® at

Vaadin makes it faster and easier to develop and modernize applications based on Java. We let you choose from two platforms to suit the needs of each of your development teams.

Our flagship Flow platform empowers Java developers to build intuitive UIs quickly using their existing Java skills, while our Hilla platform makes it easy to build a modern reactive frontend on an existing Java backend.


Grandcentrix GmbH, based in cologne, offers plug & work IoT products with future-proof technologies and customized development projects. With about 200 experts and 150 successful IoT projects in 15 years, grandcentrix pursues one mission as an implementation partner: We make IoT happen.

GEBIT Solutions – The experts for IT in retail. We realize innovative and individual Java solutions for international top players in retail like Aldi Süd, dm-Dorgeriemärkte or OBI since 1996.

Looking for new challenges? Be part of our strong team of experts who face new tasks with enthusiasm and competence to lead our projects to success.

Established in 1997, adesso is one of the leading independent IT service providers in the German-speaking world. The company specialises in consulting and tailored development of software for core business processes and public authorities. adesso Group is one of the largest German IT service providers.

anderScore covers the entire SW lifecycle, from business analysis, stable architectures, customer-specific applications up to DevOps & clouds, by agile proceedings. We implement for digitalizing processes, legacy-migrations, interfaces, web & mobile frontends and hold rainings. Technical focus: Java enterprise, JavaScript frameworks.


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.

Brella is the leading event platform for virtual, physical, and hybrid events. The world’s leading conferences and exhibitions trust Brella to power their events with relevant content, quality networking, and multiple revenue-generating opportunities.


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.


The World's Leading Provider of Professional Development Tools. Makers of IntelliJ IDEA, ReSharper, PyCharm, TeamCity, Kotlin and more. The Drive to Develop!

Level up your skills with advanced challenges like building your own Git, Docker, Redis etc. at CodeCrafters! Join for free and rub shoulders with engineers from Google, GitHub, Vercel and more. After a week, enjoy 40% off any paid plan. Practice writing complex software from today!


Get 50% off your CodeCrafters membership:

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: