JCON

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Java Community Conferences - in-person.

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Our next #JCON2026 session is live: '#Reactive Web Apps With 100% #Java' with Leif Åstrand

Full-stack #development can be intimidating, especially when going beyond the typical #CRUD A reactive application with real-time updates requires …

Grab your coffee and hit play: https://youtu.be/vbT5gRmCS98

Reactive Web Apps With 100% Java | Leif Åstrand (EN)

YouTube

Our next #JCON2026 session is live: '#Microservices and Microfrontends: #Scaling #Learning #Growing – Our Journey' with Lofi Dewanto & Patricia Erdelen

Five years ago, our sales applications faced the #challenge of adapting to support more …

Grab your coffee and hit play: https://youtu.be/CkNo9xD3ewQ

Microservices and Microfrontends: Scaling, Learning, Growing | Lofi Dewanto & Patricia Erdelen (EN)

YouTube

Our next #JCON2026 session is live: 'Flight Recordings and Mission Control Through Thick #Clouds' with Martin Skarsaune

When you need to #troubleshoot really tricky #production issues flight recorder and mission control are the #ultimate tools. ...

Grab your coffee and hit play: https://youtu.be/W4JM27t2Rec

Flight Recordings and Mission Control Through Thick Clouds | Martin Skarsaune (EN)

YouTube

The date for #JCON EUROPE 2027 is locked!

During #JCON2026 we already teased a “Save the Date”

Now we can share the official dates of #JCON2027:
📅 April 26–29, 2027
📍 #Cinedom Cologne, Germany

Ticket sales will start later this year.
Mark your calendars & don't forget to follow for updates!

Our next #JCON2026 session is live: 'When #ORM Becomes OMG: #Performance Pitfalls in JPA and Friends' with Jos Roseboom

#JPA makes #database interaction feel almost magical—until your app grinds to a halt. In this talk, we’ll take a tour …

Grab your coffee and hit play: https://youtu.be/RjnXUFyXlno

When ORM Becomes OMG: Performance Pitfalls in JPA and Friends | Jos Roseboom (EN)

YouTube

Our next #JCON2026 session is live: 'Why Bad #Decisions Happen' with Anja Kunkel

Have you ever been in the following situation? You know for certain that you are #technically right. Your #project has to be #done for the #benefit of the …

Grab your coffee and hit play: https://youtu.be/1kkPR9XhRdE

Why Bad Decisions Happen | Anja Kunkel (EN)

YouTube

Our next #JCON2026 session is live: 'You Gotta Keep the Dogs Away: #YOLO Developer Workflows with a #Coding Agent in a Box' with Kevin Wittek

As coding agents like #Claude Code, #OpenAI Codex and #Gemini CLI become part of developers’ daily …

Grab your coffee and hit play: https://youtu.be/-czKfFETmPU

You Gotta Keep the Dogs Away: YOLO Developer Workflows with a Coding Agent in a Box | Kevin Wittek

YouTube

Our #JCON2026 recap is here! 🎬🔥

Still thinking about those four insane days in Cologne?
Or wondering what you missed at this awesome #Java conference?

From packed sessions to hallway-track moments & an absolutely incredible #community — this recap is pure #JCON energy. ❤️

https://youtu.be/Hnf-Ov50NHo

JCON EUROPE 2026 - Recap

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Our next #JCON2026 session is live: 'Building a #Digital Product Passport with #Java and Cardano' with Fabian Bormann

#Blockchain technology is widely known for its applications in #decentralized financial services, though it is often ...

Grab your coffee and hit play: https://youtu.be/X5UhAOtPFYk

Building a Digital Product Passport with Java and Cardano | Fabian Bormann (EN)

YouTube

Our last #JCON2026 keynote is live: 'Code Is Cheap. #Software Isn’t.' by Markus Eisele

#AI can now write #code faster than most #developers can #review it. That sounds like progress. In many teams, it isn’t.
In real #Java systems, the problem was…

Grab your coffee and hit play: https://youtu.be/Di4ii6Xsb9A