JCON on JAVAPRO International

JCON EUROPE 2026: Why the Java Community Still Meets in Person

Mon, 01 Jun 2026 07:00:00 +0000

Every year, when we start planning JCON EUROPE, one question always guides us:

How do we create a conference that developers genuinely enjoy attending?

Not just another event with slides and sponsor booths. Not a place where people passively consume information and leave. We wanted to create an environment where developers actively connect, discuss, challenge ideas, and solve real-world problems together.

Looking back at JCON EUROPE 2026, I believe this spirit was visible everywhere.

05-2026 | From AI as a Feature to AI as Infrastructure

Thu, 28 May 2026 10:41:04 +0000

DOWNLOAD

JCON
▪️JCON Europe 2026: Why the Java Community Still Meets in Person

CORE JAVA
▪️Java 26 Is Boring
▪️Structured Concurrency in Java 26 (JEP 525 Deep Dive)
▪️Are the Classic Design Patterns Still Valid with Modern Java?

API & FRAMEWORKS
▪️The Gen AI Iceberg – Java Tooling Edition
▪️Building AI-Driven Java Systems with Spring AI and Java 26
▪️LangChain4j Agentic Workflows: From AI Calls to Multi-Agent Systems in Java

04-2026 | Java in the Age of AI - Special Edition

Mon, 27 Apr 2026 12:50:36 +0000

DOWNLOAD

JCON
▪️A Big Screen Experience for Java Developers & Architects

CORE JAVA
▪️A Big Screen Experience for Java Developers & Architects
▪️Effective Pattern Matching 2026 Edition
▪️Data Oriented Programming with Java
▪️Java 26 adopts HTTP/3 with the Evolution of the HttpClient
▪️Java 26 GC: Making Data Streaming Faster and More Reliable in Containers
▪️1BRC – The First 80%
▪️Building GPU Accelerated LLM Inference Libraries with TornadoVM
▪️Reactor Has Died, Long Live REACTOR!

Fresh off the Press: Free JAVAPRO Special Edition at JCON 2026 – PDF Coming Soon

Wed, 22 Apr 2026 09:39:35 +0000

The new issue of JAVAPRO – “Java in the Age of AI” Special Edition has arrived at JCON 2026. Conference attendees can pick up a freshly printed copy for free, exclusively available in the Coffee Area. The print run is limited—so if you want to secure a copy, don’t wait too long.

With this special edition, JAVAPRO places a strong focus on the future of the Java ecosystem in the context of artificial intelligence. The magazine brings together high-quality articles on topics such as AI agents with Java and Spring, vector databases, microservices architectures, performance optimization, as well as security and supply chain stability. It is further enriched with practical insights into modern frameworks, new JVM trends, and innovative approaches to data access.

Don’t Miss: New AI Award & AI Highlights at JCON 2026

Mon, 20 Apr 2026 13:08:00 +0000

JCON EUROPE 2026 is about to kick off – and anticipation is building. The conference opens its doors today in Cologne, once again bringing together the international Java community. Just ahead of the event, new high-profile AI highlights have been announced, making it one of the most important meeting points for AI and Java experts in Europe.

Focus on AI: Highlights on Wednesday

A special focus is placed on AI on Wednesday, April 22. The day begins with a high-level keynote:

Take Control of GenAI — Without Compromising Your Data

Thu, 09 Apr 2026 11:50:02 +0000

Most GenAI demos look impressive — until data protection becomes a blocker.

Suddenly, you’re dealing with external APIs, unclear data flows, and compliance risks that slow everything down or stop projects entirely.

But what if you could build GenAI systems without any of that?

In this hands-on JCON EUROPE 2026 workshop, “Building Secure, Self-Hosted RAG Systems in Java”, you’ll explore how a fully local, self-hosted RAG system can be implemented — using Java and technologies you fully control.

A Big Screen Experience for Java Developers & Architects

Wed, 08 Apr 2026 12:00:02 +0000

JCON EUROPE 2026 | April 20–23, 2026 | Cinedom Cologne

Anyone talking about modern software development today can hardly avoid Java. Few technologies have shaped the enterprise world as sustainably, and few communities are as vibrant, diverse, and innovation-driven. This is exactly where JCON comes in: as a meeting point, a platform, and an experiential space for developers from all over the world. With participants from more than 70 countries, JCON has long since become an international gathering. Openness, knowledge sharing, and a strong sense of community remain at its core.

Java Performance Optimization with Agentic AI: Autonomous Diagnostics and Actionable Recommendations

Tue, 07 Apr 2026 07:00:01 +0000

Java performance diagnosis in production is manual, slow, and requires deep expertise. You get a Grafana alert, grab a thread dump, download a JFR recording, open it in JDK Mission Control, stare at flamegraphs, correlate with metrics — hours of work per incident. Most teams don’t have a dedicated performance engineer, so alerts get ignored or result in generic “add more replicas” responses.

We built a system that does this autonomously. When a monitoring alert fires, it collects profiling data and thread dumps, extracts runtime metrics, generates flamegraphs, and sends everything to an AI model that produces a structured performance report — including root cause analysis and concrete code fixes with file paths and line numbers from the actual source repository. The pipeline runs on Kubernetes, triggered by Grafana webhooks, with results stored in Amazon S3.

Caching and Beyond: Smarter Data Processing with Java - in 2 Hours

Thu, 02 Apr 2026 11:45:01 +0000

Many Java teams start simple — a single database, a straightforward architecture. But as systems evolve, so does the stack: caching layers to improve performance, search engines for faster queries, additional databases for specialized use cases, and now vector stores for AI-driven features.

What begins as optimization often turns into a fragmented landscape of technologies. The result: increasing complexity, higher infrastructure costs, and growing DevOps overhead.

The session “Caching and Beyond – Smarter Data Processing with Java” at JCON EUROPE takes a different approach. Instead of adding more tools, it focuses on simplifying data architectures — using a clean, Java-centric model built on open-source technologies.

Architect Your Own Experience: Creating Your Individual JCON 2026 Journey

Tue, 31 Mar 2026 12:00:03 +0000

The JCON EUROPE 2026, taking place from April 20 to 23 at the Cinedom Multiplex Cinema in Cologne, consistently focuses on a format that offers participants maximum flexibility. Instead of a fixed schedule, the individual design of one’s own conference experience takes center stage.

With a wide range of sessions, formats, and networking opportunities, visitors can decide for themselves which content, conversations, and contacts they want to focus on.

The central foundation for this is the JCON Schedule: participants can create their personal agenda, bookmark relevant sessions, and organize targeted 1:1 meetings with speakers or exhibitors. This turns the conference into something that is not just consumed, but actively shaped—depending on individual interests, projects, and professional priorities.

The Inconvenient Truth About Code, 30 Years of Java & Sovereign AI – The Keynotes of #JCON2026

Fri, 27 Mar 2026 07:00:01 +0000

4 Days | 100+ Speakers | 100+ Sessions | In-Person

JCON EUROPE 2026 is just around the corner and once again brings the international Java community to Cologne. At the Cinedom Cinema, attendees can expect an extensive program with over 100 sessions as well as three central keynotes that will open each conference day.

Three Keynotes at a Glance

Java: 30 Years and Beyond

Tuesday, April 21 | 10:15 AM | Cinema 5
Speaker: Sharat Chander (Senior Director & Head of Global Devleoper Programs, Oracle)

03-2026 | From Coder to System Designer

Thu, 26 Mar 2026 11:50:02 +0000

DOWNLOAD

JCON
▪️Architect Your Own Experience: Creating Your Individual JCON 2026 Journey

CORE JAVA
▪️The Foundations of Data-Oriented Programming in Java
▪️Lazy Constants in Java 26: Deferred Immutability and JVM Trust
▪️Final Is No Longer a Hint in Java 26
▪️Java 26 in Practice: How the JVM Is Changing the Way We Write Code
▪️Reverse Engineering Java: Backtracking Native Crashes

API & FRAMEWORKS
▪️Paketo Buildpacks: Ready for Java 26 & More!
▪️Stop Writing YAML: How to Define, Test, and Deploy Your Cloud in Pure Java
▪️Beyond REST: Rethinking APIs with GraphQL and Java
▪️Solving Spring AI’s UI Challenge with AG-UI’s Java SDK

More Than Just a Conference for Java Enthusiasts | JCON 2026

Tue, 24 Mar 2026 12:00:02 +0000

With over 100 speakers, more than 100 sessions, and a diverse supporting program, JCON Europe 2026 once again positions itself as one of the leading events for the Java community. Taking place in Cologne as an in-person conference, the event combines deep technical expertise with a strong focus on creating a highly customizable attendee experience.

A Conference Tailored to You

JCON Europe 2026 is designed to give participants full control over their conference journey. A wide variety of session formats, thematic tracks, and networking opportunities allow developers to build a schedule that aligns with their interests, experience level, and career goals.

AI without spaghetti: Clean architecture in the age of AI

Tue, 17 Mar 2026 07:00:01 +0000

When “Just ship it” turns into lasagna code

We start with a familiar scene: a small experiment that grows faster than its architecture can handle. This is exactly the kind of situation where clean architecture becomes essential. Like layering pasta without checking the recipe, we kept adding features until the structure began to wobble.

At first everything seems perfectly reasonable. A quick integration with an API, a prompt that produces surprisingly good results. Suddenly the prototype starts solving real problems. The codebase grows organically: a helper class here, a service there. Maybe a controller that does just a little bit more than it probably should.

High-Demand Workshops at JCON EUROPE 2026 – Tickets Available Now

Mon, 16 Mar 2026 12:00:01 +0000

Cologne – JCON EUROPE returns to its venue from April 20-23, once again offering an extensive program for Java enthusiasts. In addition to over 100 speakers and sessions, Monday, April 20, is fully dedicated to hands-on, expert-led workshops.

Each workshop is a two-hour deep dive into cutting-edge technologies and real-world development topics. Participants can choose from a total of seven different sessions across two time slots: 1:00–3:00 PM and 4:00–6:00 PM. A coffee break in between provides room for informal networking.

How JCON Becomes Your Individual Highlight!

Tue, 03 Mar 2026 12:31:42 +0000

After welcoming attendees from 56 countries across six continents at JCON EUROPE 2025, JCON is aiming to surpass last year’s success and reach new heights.

Live Coding Experience on the Big Screen - unique in Germany

Developers want to see code. For this reason, the 11th edition of JCON will once again take place as an in-person conference in a multiplex cinema in Cologne. The event transforms coding and programming into a cinematic spectacle, ensuring that every detail of the incredible speakers is showcased in full detail on the big screen.

02-2026 | Engineering Intelligence

Mon, 23 Feb 2026 11:07:31 +0000

DOWNLOAD

JCON
▪️Engineering Intelligence Live: JAVAPRO Benefits for JCON 2026

CORE JAVA
▪️Building Low-Latency Event Pipelines With Java 25
▪️Achieving Microsecond Latencies With Java: Practical Techniques for Building Ultra-Fast Systems

API & FRAMEWORKS
▪️API Development: Implementing POST and SSE Events in Jakarta REST
▪️Open J Proxy: A Modern Open-Source Approach to Database Connectivity for the Java Ecosystem
▪️From Tables to JSON: Handling Unstructured Data in RDBMS Systems With Spring Boot
▪️Java 26 and Spring Boot 4: From Certification Skills to Production-Ready Applications
▪️From Cron to Carbon and Cost-Aware: Modernizing Java Background Jobs
▪️Why Struts 1.3 Still Matters in 2026
▪️The Jakarta Cliff: Why Modern Java Leaves Struts 1 Behind

Free Tickets for JCON EUROPE 2026

Wed, 11 Feb 2026 12:00:00 +0000

4 Days | 100+ Speaker | 100+ Sessions | In-Person

The Ultimate Java Experience on The Big Screen!

JCON EUROPE 2026 is returning to the big cinema screen from April 20–23, 2026! Join JCON for a top-tier Java conference featuring four parallel tracks, hands-on workshops, and a vibrant international Java community.

📅 Monday, April 20th – Big Workshop Day
📅 Main Conference: April 21st- 23rd – Deep-dive sessions, live coding & networking
📅 Premium AI Track: April 21st - 22nd - Special AI-focused track for VIPs & ticket upgrades
📅 VIP Event: April 22nd – Exclusive gathering with Java experts
🍻 Happy Hour: April 21st - 22nd – Unwind and network with fellow developers

JCON Meets Enterprise AI - From Basics to Production

Thu, 29 Jan 2026 12:00:01 +0000

From April 20–23, 2026, the European Java community will once again gather in Cologne for JCON EUROPE 2026. Taking place at the Cinedom multiplex cinema, the conference brings together developers, architects, and Java enthusiasts for four days of knowledge sharing, inspiration, and real-world experience — all on the big screen.

Under the motto “Big screen. Big community. Big AI.”, JCON EUROPE 2026 offers an in-person program running daily from 9:00 to 18:00 (CEST), combining technical depth with a strong community focus.

20% Early Bird Ends January 31 — Premium AI Track and 100+ Sessions Await at JCON 2026

Tue, 27 Jan 2026 12:00:02 +0000

With JCON EUROPE 2026 coming up this spring, the discounted Early Bird phase is about to close. The Early Bird ticket offer ends on January 31, 2026 (23:59, Europe/Berlin) — giving attendees roughly one week to secure the reduced rate before regular pricing takes over.

JCON EUROPE 2026 will take place April 20–23, 2026 at Cinedom Cologne, featuring four in-person days of Java content on an unusual but fitting venue: a cinema. Sessions and demos are designed for the big screen, with the program running daily 9:00–18:00 onsite.

JCON EUROPE 2026: Early Bird Ends in Two Weeks — Full Schedule Online

Wed, 21 Jan 2026 10:00:02 +0000

With JCON EUROPE 2026 approaching, the Early Bird ticket phase is about to close — leaving attendees only around two weeks to secure discounted passes. The Early Bird offer runs until January 31, 2026 (23:59, UTC+1) and includes 20% off all conference passes. JCON EUROPE 2026 will take place April 20–23, 2026 at Cinedom Cologne.

For planning purposes, the session schedule is already available online:
https://schedule.jcon.one/2026/

Four Days of Java, Architecture, and Community

The event kicks off with workshops on Monday, April 20, starting at 13:00, followed by three full conference days featuring practical Java deep dives, architecture insights, hands-on demos, mentoring opportunities, and plenty of hallway-track networking. Organizers have also announced a mid-week VIP party.

Code. Collaboration. Community.

Wed, 24 Dec 2025 07:00:02 +0000

JCON USA @ IBM TechXchange 2025 – where the spirit of Java found a new home in Orlando.

When the JCON team announced they were bringing their renowned Java conference series across the Atlantic, expectations were high. Known for its lively spirit and deep technical content, JCON Europe has become a must-attend event for Java developers. Its first U.S. edition – JCON USA @ IBM TechXchange 2025 – not only met those expectations but exceeded them, uniting Java professionals from around the world under one roof in Orlando.

JAVAPRO Magazine JCON & Java 26 Special Edition - Call for Papers

Tue, 11 Nov 2025 12:00:00 +0000

CfP is Open until: November 28, 2025 | Deadline for article submission: January 16, 2026 | Publishing: in April \

Calling all Java Enthusiasts!

After the huge response to our print specials “30 Years of Java” and “Java 25”, we’re now preparing a brand-new edition for JCON EUROPE 2026.

To mark the release of Java 26, we’re publishing a limited JAVAPRO print special that combines standout JCON content with the key innovations in and around Java 26.

JCON EUROPE 2026 - CFP 3 Days left

Wed, 22 Oct 2025 13:24:30 +0000

The Call for Papers for JCON EUROPE 2026 is closing soon, with only three days remaining for submissions. The deadline is Friday, October 24, 2025, at 23:59 (UTC+2).

As the premier in-person Java community conference in Germany, JCON EUROPE will return to the Cinedom in Cologne from April 20–23, 2026, bringing together Java developers, architects, and technology experts from around the world.

The conference is renowned for its distinctive cinema setting, strong community spirit, and high-caliber technical sessions. Attendees can look forward to a packed agenda, a vibrant hallway track, and the popular Mentorship Hub hosted by Bruno Souza, offering direct interaction between newcomers and seasoned industry leaders.

Early Bird 30% — JCON GenAI — The Enterprise Java AI Revolution Begins

Mon, 20 Oct 2025 07:00:03 +0000

No more Python.
The moment for enterprise-grade Generative AI in Java has arrived — and you have the advantage! Almost all major enterprise systems, and the mountains of proprietary data they hold, are built on Java. That makes Java the perfect foundation for high-impact AI projects — but only if you know how to build them right.

JCON GenAI is your high-octane, single-day hands-on workshop series, designed to get you out of theory and into production-ready code. Join leading experts from the Java community and master the tools, architectures, and security foundations needed to drive your company’s AI transformation.

Call for Papers for JCON EUROPE 2026 Extended Until October 24

Mon, 13 Oct 2025 17:54:40 +0000

The Call for Papers (CFP) for JCON EUROPE 2026 has been extended by two weeks. The new deadline for submissions is Friday, October 24, 2025 (23:59 UTC+2).

The extension gives potential speakers more time to finalize their proposals for the next edition of Europe’s leading community-driven Java conference. JCON EUROPE will take place April 20–23, 2026, once again at the Cinedom in Cologne – a venue known for its cinema-sized screens and vibrant hallway track atmosphere.

JCON @ IBM TechXchange 2025: Java Community Meets in Orlando

Wed, 01 Oct 2025 13:34:58 +0000

Orlando, Florida – October 6–9, 2025 – The international Java community will come together as part of IBM TechXchange 2025 for a special program track: JCON @ IBM TechXchange 2025. The Java track of the conference is organized by the Java User Group Oberpfalz in cooperation with the trade magazine JAVAPRO and offers developers a platform for exchange, practice, and innovation.

Under the motto “Embrace your Java Journey”, the focus will be on hands-on content: live coding sessions, hands-on workshops, insights into current tools, and contributions to open-source projects. Participants can obtain on-site certifications and connect directly with more than 1,000 experts.

JCON EUROPE 2026 - CFP Is Open

Tue, 23 Sep 2025 12:00:02 +0000

The Call for Papers is now open, and we’re looking for all to share your expertise, showcase cutting-edge solutions, and inspire the community. Got an exciting project? A story to tell? Real-world insights? We want to hear from you!

Be a pioneer: Help shape the future of Java! Present your innovative ideas and projects to an international audience on a giant cinema screen.
Increase your visibility: Position yourself as a recognized authority in the Java community and take advantage of the opportunity for personal 1-on1 Sessions.
Expand your network: Make contacts with leading experts from the Java world and keep your finger on the pulse.
Experience an unforgettable atmosphere: JCON is more than just a conference - it is a celebration of the Java community.

Your Topics

Whether you are interested in Core Java, cloud-native development, microservices, artificial intelligence or other exciting areas - JCON offers a stage for all aspects of the Java world.

Next Generation Caching & In-Memory Searching

Mon, 28 Jul 2025 07:00:01 +0000

When Traditional Databases Reach Their Limits

Enterprise applications frequently face performance bottlenecks that stem from the underlying persistence layer. Despite decades of database evolution, many core applications still struggle with latency, throughput, and architectural complexity. These issues are particularly evident in systems that depend on complex join operations across multiple tables, need to process unstructured data, or must execute cross-database queries spanning disparate systems to fulfill analytical workflows.

In such environments, it is common to see a combination of various technologies being deployed in tandem: a traditional relational database, a distributed cache, a NoSQL database, and sometimes a dedicated search server such as Elasticsearch. While each of these systems addresses a specific technical challenge, their co-existence leads to architectural fragmentation, high infrastructure costs, duplicated data models, and increased development and maintenance efforts. Moreover, the overall latency and resource usage often remain suboptimal due to inherent I/O-bound limitations and serialization overheads between systems.

Java Community in the Spotlight: XDEV's Richard Fichtner Guests on the Payara Podcast

Wed, 25 Jun 2025 18:07:19 +0000

Richard Fichtner, CEO of XDEV and a seasoned Java Champion with over 20 years of experience, recently appeared on the Payara Podcast. In the latest episode of the “Java User Group Spotlight” series, he spoke with host Dominika Tasarz about the origins and growth of the JUG Oberpfalz, his role as one of the co-organizers of the JCON Conference, and the challenges and rewards of building Java communities—especially in rural regions.

The conversation highlighted the passion and commitment behind community building: from launching a local Java User Group in Bavaria to organizing international conferences and creating innovative formats like the “Java Haters Meetup”, where even critical voices are welcome.

Cinema, Code, Community: JCON EUROPE 2025 raises the bar for Java events

Fri, 30 May 2025 09:33:47 +0000

From hands-on workshops to live coding on the big screen to the new mentoring revolution – JCON EUROPE 2025 in Cologne was a celebration for Java enthusiasts from around the globe.

A global gathering of the Java community

From May 12–15, 2025, Cologne became the epicentre of the international Java community. For the tenth edition of JCON EUROPE, developers from more than 60 countries across five continents gathered at the Cinedom to celebrate 30 years of Java. The atmosphere? Euphoric, collaborative – with plenty of good humour.

EclipseStore: The Evolution of Java Persistence

Mon, 12 May 2025 11:24:29 +0000

Database development in Java has always been a challenge, often feeling like a battle against mismatched paradigms. From the start, developers wrestled with complex mappings and performance bottlenecks when integrating Java with databases. EclipseStore, an open-source project under the Eclipse Foundation, was created to change this. Its mission is to deliver a Java-native persistence layer that feels like an integral part of the language, not a workaround for database limitations. By storing Java objects directly, it aims to simplify and accelerate development, aligning persistence with Java’s core strengths.

IBM Architect Mark Stoodley Reveals JVM Optimization Techniques

Wed, 07 May 2025 10:17:14 +0000

Slow Java startups, repeated JIT compilations, high CPU load: these factors are not just performance issues — they also drive up infrastructure costs and increase the energy consumption of applications. At JCON EUROPE 2025, developers will have a rare opportunity: Mark Stoodley, Chief Architect for Java at IBM, travels from Canada to personally lead an exclusive workshop. The title: “Ultra Efficient Startup for Production Java Workloads” — a hands-on format demonstrating how to run JVM-based production applications more efficiently, faster, and with lower resource consumption.

Vector Embedding in Java Applications: Gen-AI Functions Directly from the Database

Tue, 06 May 2025 11:30:01 +0000

Generative AI (GenAI) has rapidly advanced in recent years and is increasingly finding its way into practical software development. What was once considered a research topic is now becoming a tool for everyday developers — including in the Java space. Vector embeddings play a key role here: they enable functions like semantic search, text classification, or recommendation systems, opening up entirely new application possibilities.

But how can these technologies be integrated into existing Java applications without the need for complex frameworks or external cloud services?

Optimizing Java Performance: Caching with Core Java Instead of Complex Frameworks

Mon, 05 May 2025 07:00:02 +0000

Slow Java applications are a well-known problem in many projects: delays caused by ORM, complicated caching structures, and overloaded databases slow down performance. At JCON EUROPE 2025, the two-hour workshop “High-Performance Caching with Pure Java: Supercharge Your Sluggy Database Application” will show how to specifically solve these problems — exclusively with Core Java, without additional frameworks or cloud services.

Hands-on: Caching and Queries at Maximum Speed

Participants will learn how to develop a high-performance caching and query layer themselves — lean, memory-efficient, and directly in Java. The goal is to eliminate typical performance bottlenecks in database-based applications and increase system speed many times over.

Local AI with Java: AI Integration Without Cloud Dependency

Fri, 02 May 2025 07:00:03 +0000

The future of artificial intelligence is local. Increasingly, companies are turning to local AI models to ensure data privacy, offline capabilities, and independence from cloud providers. At JCON EUROPE 2025, the two-hour “AI-based optimization in expedition planning – a practice-oriented workshop” with Sven Ruppert will demonstrate exactly how to implement this in Java: high-performance, privacy-friendly AI features – directly in your own application, entirely without cloud services.

Focus on the Open-Source Project “Expedition Planner”

At the center is the open-source project “Expedition Planner”, a Java-based web application designed for planning and organizing expeditions. However, this isn’t just theory: participants will work on real-world use cases, integrating local AI models with Ollama, utilizing Langchain4j and Retrieval Augmented Generation (RAG) to optimize task planning and equipment lists intelligently.

Gen-AI with Java: Build an Intelligent Chat Assistant in Just Two Hours

Wed, 30 Apr 2025 12:17:30 +0000

Generative AI is no longer limited to research labs – it’s ready for real-world application. At JCON EUROPE 2025, Java developers will have the opportunity to experience exactly that: In a two-hour workshop, participants will learn how to build an intelligent chat assistant from scratch using Helidon and LangChain4J – practical, production-ready, and Java-first.

From Concept to Working Application

The hands-on session “Build an AI-Powered Application with Helidon and LangChain4J” focuses on direct implementation: no slides, no theory – just real code, modern tools, and comprehensible architectures. The goal is to create a functional Gen-AI-powered chat assistant that not only works as a demo but can also be expanded into real-world projects.

Dynamic Caching for Massive Workloads: Pure Java Solutions First-Hand

Tue, 29 Apr 2025 08:54:00 +0000

Many Java developers encounter the limitations of traditional caching and database solutions when dealing with large amounts of data and dynamically growing workloads. Heavyweight systems often prevent flexible scaling or unnecessarily increase infrastructure costs.

The session "High-Performance Caching with Pure Java – Part 2: Managing Gigantic Workloads" at JCON EUROPE 2025 presents an approach that does things differently: Instead of complex architectures, this approach relies on pure Java – lean, scalable, and powerfull.

JUnit 5: Eight Years of Innovation – Many Java Developers Are Falling Behind

Mon, 28 Apr 2025 12:23:46 +0000

In many projects, JUnit is still used the way it was years ago — without taking advantage of the relevant innovations introduced in recent releases. Yet JUnit 5 has evolved significantly since its initial release: over eight years and twelve major updates, it has become a powerful, flexible, and extensible testing platform.

The JUnit 5 Revolution: First-Hand Insights

At JCON EUROPE 2025, developers will have the opportunity to not only discover the latest features of JUnit 5 but also to apply them directly. In the two-hour hands-on session "Catching up with JUnit 5", two key members of the JUnit team will guide participants through the most important developments.

Goodbye to ORM Pain: EclipseStore Hands-On with the Lead of the Open-Source Project

Thu, 24 Apr 2025 12:19:17 +0000

Many Java developers are all too familiar with the downsides of traditional ORM frameworks: performance bottlenecks under scale, complex serialization, and recurring issues when refactoring persistent object models. If you’re looking for a modern, high-performance alternative, EclipseStore deserves a closer look – and not just in theory, but in practice.

Experience EclipseStore in Action – Led by a Core Contributor

At this year’s JCON EUROPE 2025, you’ll have a unique opportunity to get hands-on with EclipseStore. Florian Habermann, CTO of MicroStream Software and a core contributor to EclipseStore, is hosting a two-hour practical workshop. Rather than sitting through slides, participants will actively code – in their own IDEs, with Java, and against production-relevant use cases.

High-Demand Workshops at JCON EUROPE 2025 – Tickets Available Now

Thu, 10 Apr 2025 07:00:03 +0000

Cologne – JCON EUROPE returns to its venue from May 12–15, once again offering an extensive program for Java enthusiasts. In addition to over 100 speakers and sessions, Monday, May 12 is fully dedicated to hands-on, expert-led workshops.

JCON EUROPE 2025: Live Coding, Networking & Community-Highlights

Tue, 08 Apr 2025 10:00:01 +0000

4 Days | 100+ Speaker | 100+ Sessions | 9 Workshops | In-Person

JCON EUROPE 2025 returns as one of the leading Java community events in Europe. Last year’s edition welcomed participants from 56 countries across six continents. The 10th edition will not only feature a packed schedule of technical sessions and live coding formats, but will also place a stronger emphasis on personal exchange and community interaction. Several curated networking formats will complement the conference program, offering attendees direct access to speakers, experts, and peers.

JCON EUROPE 2025 - CFP Is Open

Fri, 18 Oct 2024 21:43:36 +0000

Be a pioneer: Help shape the future of Java! Present your innovative ideas and projects to an international audience on a giant cinema screen.
Increase your visibility: Position yourself as a recognized authority in the Java community and take advantage of the opportunity for personal 1-on1 Sessions.
Expand your network: Make contacts with leading experts from the Java world and keep your finger on the pulse.
Experience an unforgettable atmosphere: JCON is more than just a conference - it is a celebration of the Java community.

Your Topics

Whether you are interested in Core Java, cloud-native development, microservices, artificial intelligence or other exciting areas - JCON offers a stage for all aspects of the Java world.

Save The Date - JCON EUROPE 2025

Fri, 18 Oct 2024 19:03:32 +0000

4 Days | 100+ Speakers | 100+ Sessions | daily 9am - 18pm live |

May 19-22 | Join us in Cologne, Germany for 3 days of Java-powered excitement and a workshop day on Monday. We’ll take over our beloved Cinedom the multiplex cinema in Cologne, Germany and end with a massive birthday bash on Thursday, May 22nd to honor Java’s incredible 30-year journey.

Why JCON EUROPE

This isn’t just a conference; it’s the premiere Java community conference in Germany, where Java developers from around the globe come together. Powered by the Java community and organized by the JAVAPRO Magazin in collaboration with Java User Group Oberpfalz, JCON EUROPE is where brilliant minds come together to learn, network, and have a blast. And this year, with 30 years of Java and the 10th edition of JCON to celebrate, it’s going to be the biggest, most unforgettable edition yet.