JCON EUROPE 2025
Discover the Heartbeat of Java –
Where Community and Code Converge
2025, May 19 – 22: 1 Workshop-Day, 3 Conference-Days
⟟ Cinedom Multiplex Cinema, Cologne, Germany
About The Conference
JCON EUROPE: Embrace your Java Journey.
Dive into the pulsating heart of the Java community at JCON EUROPE 2025, 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?
Community
✓ Meet Kindred Spirits Eager to Connect
✓ Personal 1-on-1 Sessions
✓ Unique Cinema Setting for an Immersive Experience
Code
✓ From Developers for Developers
✓ Live Coding On Giant Movie Screens
✓ Hands-on Frameworks And Cases
✓ Future Tech Insights and Previews
Content
✓ Top-notch Speakers
✓ Inspiring Keynotes & High Level Content
✓ Practice-oriented Workshops
✓ Topics Relevant to Your Daily Work
One Workshop Day before the conference
Get Ready to Kick Off JCON EUROPE 2025 with our Workshop Day!
This year, we're changing things up to maximize your workshop experience! Instead of choosing just one 4-hour workshop, you can now attend two dynamic 2-hour sessions.
Here’s how it works:
- Choose one workshop for each of the two available timeslots.
- Immerse yourself in a total of 4 hours of intensive learning.
- Explore two diverse topics from a wide range of parallel tracks.
Three 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 2024. 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 10th 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.
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
Ana Maria Mihalceanu
Java Champion Alumni, Certified Architect
Gerrit Grunwald
Senior Developer Advocate at Azul Systems
Steve Poole
Director Developer Advocacy, Sonatype
Sharat Chander
Senior Director, Oracle
Our Sponsors 2025
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!
PLATINUM PARTNER
GOLD PARTNER
ORGANIZATION PARTNER
Our Partners
JCON EUROPE 2025 offers free 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.
Motivation
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.
Team
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.
Community
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!
Feast Your Mind and Stomach at JCON!
STAY UP TO DATE,
SUBSCRIBE TO OUR NEWSLETTER!
SPONSORSHIP
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:
Travel back in time to fix it!
Here are 1.21 Gigawatts to go back to the future of Java.