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


2023 June20-23

About JCON EUROPE 2023

JCON EUROPE 2023 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 2019, more than 1,000 participants from 34 countries and five continents had joined the JCON 2019. We’ll start JCON EUROPE 2023 after the pandemic. We will have a hygiene concept in place for the event.

The 7th 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


Just sent out over 100 JCON EUROPE acceptance emails.


If you didn't get a mail - give us a little time. There is a waitlist that will move forward as confirmations come in. https://t.co/pJGeLQ1SgZ

Retweeted By JCON

Thank you so much @consol_de for your great JCON EUROPE 2023 support with start-up spirit & 35 years of experience!! We are proud to have you as a bronze partner for @jcon_conference. bit.ly/3DPc0hz


#JCON2023 tickets: 2023.europe.jcon.one/ticketshttps://t.co/96Am1wq79j


UCI Cinema Duesseldorf, Germany

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

Dr. Susanne Braun

Expert Software Architecture Data-Intensive Systems at Fraunhofer IESE

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


The session plan for JCON EUROPE 2023 with 5 parallel livestreams is currently being compiled. We are looking forward to four exciting days.

Our Sponsors 2023

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.


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.

TIMOCOM gestaltet den Güterverkehr auf der Straße smart, safe und simple. Wir sind Wegbereiter und Wegbegleiter für die Vernetzung in der Logistik. Mittlerweile sind wir zu einem der erfolgreichsten mittelständischen IT- und Datenspezialisten für die Logistikbranche in ganz Europa gewachsen und einer der beliebtesten IT-Arbeitgeber Deutschlands.

Doch damit geben wir uns nicht zufrieden: Wir erweitern unseren TIMOCOM Marktplatz fortlaufend um neue, zukunftsweisende und vor allem digitale Lösungen, um unseren Kunden zu helfen, die Welt auch morgen in Bewegung zu halten.


Experten verdienen Experten

Sie sind die Spezialisten auf Ihrem Gebiet und sagen uns, wie wir Sie bestmöglich unterstützen können. Gemeinsam machen wir Ihre IT-Umgebung & Geschäftsprozesse fit für die Herausforderungen von Morgen – und Ihr Business startklar für die Zukunft. Die beste Lösung ist die beste Lösung für Sie.

AxonIQ bietet eine End-to-End-Entwicklungs- und Infrastrukturplattform für die reibungslose Entwicklung von event-driven Microservices mit CQRS und Event Sourcing.

Axon wird von Unternehmen in Branchen wie dem Gesundheitswesen, Banken, Versicherungen, Logistik und dem öffentlichen Sektor eingesetzt.


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.


Manning is a publisher of computer books, videos, and projects for software developers, engineers, architects, system administrators, managers and all who are professionally involved with the computer business.

The Transparent German Tech Job Board - find your next job opportunity based on expected salary, technologies and location.

Kube events aggregates and curates all Kubernetes events happening around you and online such as meet-ups, webinars, conferences and training.

Kube Careers is the Kubernetes job board where you can find curated jobs with clear salary ranges, and apply directly to companies.

Unter dem Namen IT-Schulungen.com betreibt die Nürnberger New Elements GmbH seit über 15 Jahren eines der größten Bildungszentren im deutschsprachigen Raum. Ihr Programm umfasst ein breites Angebot von Softwareentwicklungs-Kursen zu klassischen Programmiersprachen wie Java, Python, JavaScript u.a.


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!


We use Sendinblue as our marketing platform. By Clicking below to submit this form, you acknowledge that the information you provided will be transferred to Sendinblue for processing in accordance with their terms of use


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: