• Debugging Class Loading with GDB - Marco Sussitz [Slides #TODO] [Code #TODO] [Video]
• How to Become a Better Software Engineer with AI - Elias Erkinger [Slides] [Code] [Video]

• living immutable: working with Java Records the painless way - Georgios Angelopoulos [Slides]
• Zero-Dependency Java 25+ AI Business Agents: Running locally with zsmith and LightMetal - Adam Bien [Slides]
  • FFM: Get Hostname with Foreign Function and Memory Interface
  • Quarkus Microprofile BCE Example
  • Lightmetal - AI Inference using llama.cpp on Mac with FFM
  • ZSmith - Zero Deps Agent Smith
  • AIRails
  • zb - zero dependencies java build tool

• Unbreakable by Design: The Secret Tech of Antifragile Software - Iryna Dohndorf [Slides #TODO] [Code #TODO]
• Heaps of Trouble -- Debugging Java OOM - Robert C. Kahlert [Slides #TODO] [Video]

• From Reactive Streams, through Virtual Threads, to Flows - Adam Warski [Slides #TODO] [Code #TODO] [Video]
• Armeria: The Microservices Framework You Haven't Tried Yet - Dominik Dorn [Slides] [Code] [Video]

• Centralising and automating your API contracts using a schema registry - Marian Varga [Slides #TODO]
• OpenJDK, the JCP and JUGs: contributing to Java to become a beyond senior expert - Bruno Souza [Slides #TODO]

• Domain-Driven Transformation—Modularizing and Modernizing Legacy Software - Henning Schwentner [Slides #TODO]

• Here we go again: Java 26 - Dominik Dorn [Slides] [Code] [Video]
• webswing & webforj - Stephan Wald [Slides #TODO] [Code #TODO] [Video]

• Build your own lock - Matthias Langer [Slides] [Code]
• AI Driven Development with JakartaEE - Ondro Mihályi [Slides] [Code]

• JobRunR - Easy Java Job Scheduling - Dominik Dorn [Slides]
• Fullstack in a native.image - Dominik Dorn [Slides] [Code]

• Multithreading under the lens - Marco Sussitz Christian Lutnik [Slides] [Code Example] [Code vmlens] [Video]
• Own Your Domain Before It Owns You - Philipp Seifert-Kehrer Leo Bowen Wang [Slides TODO] [Code TODO] [Video]

• SCRUM Basics - Ahmet Polat TODO [Slides TODO] [Video TODO]
• Spring AI - [Dajena Drinic](#TODO] [Slides TODO] [Video TODO]
• CSI Observability - Andreas Grabner [Slides TODO] [Code TODO] [Video]

• Faster JVM Applications Without Changing Any Code - Simon Ritter [Slides #TODO] [Code #TODO] [Video]
• Pairing With LLM Agents To Write Great Java Code Fast - Adam Bien

• Java 25 - Mohsen Ahmadian [Slides] [Code] [Video]
• GraalVM 25 - Gergö Barany [Slides #TODO]
  • GraalPy QR code
  • GraalPy on Spring Boot
  • Rust compiled to WebAssembly on Spring Boot
  • javac running in the browser
  • Native Image layers: Docs Demo
  • Some recent blog posts
    • https://medium.com/graalvm/javascript-in-java-driving-dynamic-uis-with-graalvm-at-scale-f552fb174df3
    • https://blogs.oracle.com/mysql/post/webassembly-integration-for-nextgen-data-apps-in-mysql
  • Recent talks
    • GraalVM meets WebAssembly
    • Also check out other GraalVM talks at Devoxx Belgium 2025

• Java Performance: Beyond Simple Request Latencies - John Ceccarelli [Slides] [Code #TODO] [Video]
• From Zero to Hero: Mastering Domain-Driven Design in Java - Otavio Santana [Slides] [Code] [Video]

• High performance Serverless Java on AWS - Vadym Kazulkin [Slides] [Code TODO]
• How to develop, run and optimize Spring Boot 3 application on AWS Lambda - Vadym Kazulkin [Slides] [Code TODO]

• OpenRewrite in a Nutshell: Scaling Upgrades with Practical Insights - Simon Gartner [Slides] [Code]
• how John started to like TDD (instead of hating it) - Nacho Cougil [Slides TODO] [Code TODO]

• Vaadin24 in the real world - Java Vienna Raffle - Sebastian Kühnau [Slides TODO] [Code]
• Mill - Engineering a better Java Build Tool - Haoyi Li [Slides] [Code TODO

• JVMTI - JVM Tool Interface - Kevin Watzal [Slides] [Code]
• Fun with Flags! OpenFeature - Simon Schrottner [Slides] [Code] [Tutorial Java Getting Started]

• Truffle Metacompilation in Action - Christian Humer [Slides] [Code PEDemo] [Code Tinylang]
• Trash Talk - Exploring the JVM memory management - Gerrit Grunwald [Slides] [Code]

• Keycloak as your BaaS - from zero to hero - Michael Riedmann [Slides] [Code] [Video]
• Trustworthy Enterprise AI in your IDE - Ed Burns [Slides] [Video]

• Zero Downtime Monolith Decomposition - Jakob Fiegerl [Slides] [Code #TODO] [Video]
• Evil Performance Testing - Siegfried Göschl [Slides] [Code] [Code Sample App] [Video]

• How to optimize JPA: The SQL Police - Philipp Seifert-Kehrer [Slides] [Code] [Article] [Video]
• The power of Graal: Using JavaScript, Python and WebAssembly in your Java Apps - Dominik Dorn [Slides] [Code] [Video]

• Pure, No Dependencies Java LLM Integration - Adam Bien [Slides #TODO] [Code]
• The Only Reasonable Way To Test Your (Micro) Services - Adam Bien [Slides #TODO] [Code #TODO]

• Everything You Always Wanted To Know About OpenAPI - Siegfried Göschl [Slides #TODO] [Code #TODO] [Video]
• API First revisited - where did we take a left turn? - Lukas Berger [Slides #TODO] [Code #TODO] [Video]

• Messaging with Spring - ActiveMQ vs. RabbitMQ - Milan Gogic [Slides] [Code] [Video]
• Contract Testing in Java - Damjan Gjurovski [Slides #TODO] [Code #TODO] [Video]

• The beauty of Event-Sourcing - Jakob Durstberger [Slides] [Code #TODO] [Video]
• Event Sourcing with Axon Framework - Andreas Grill [Slides] [Code] [Video]

• Is your spring boot application in Kubernetes secure? - Damjan Gjurovski [Slides] [Code #TODO] [Video]
• Have you ever considered just not writing bugs? - Tagir Valeev [Slides] [Code #TODO] [Video]

• Privacy leaks beyond the class-level: protecting personal data - Catherine Easdon [Slides] [Code #TODO] [Video]
• Change Data Capturing - Hans-Peter Grahsl [Slides] [Code #TODO] [Video]

• Design Patterns Revisited in Modern Java - Venkat Subramaniam
• Know your Java? - Venkat Subramaniam

• Prepare for Jakarta EE11 - Ed Burns [Slides #TODO] [Code #TODO] [Video]
• AI Talk - Ed Burns [Slides #TODO] [Code #TODO] [Video]
• Developer Career Masterplan - Ed Burns [Slides #TODO] [Code #TODO] [Video]

• Deep dive into Hibernate ORM 6.4 features - Christian Beikov [Slides] [Code] [Video 1] [Video 2] [Video]
• JVM Performance Comparison for JDK 21 - Ionut Balosin [Slides] [Code] [Video]

• Extend your app securely - Max Noe [Live Coding only talk] [Code] [Video]
• Parallele Programmierung in Java - Christian Heitzmann [Slides] [Code] [Video]

• Debugging a debugger - Marco Sussitz [Slides] [Code] [Video]
• Choosing the Right Tool: A Comparative Look at gRPC, REST, and GraphQL - Damjan Gjurovski [Slides] [Code] [Video]

• TestContainers, Localstack + Spring - Anca Ghenade [Slides] [Code] [Code] [Video]
• Java 21 - Dominik Dorn [Slides] [Code] [Video]

• OS Profiling & code improvements - Stephan Belks Andrew Poulter [Slides TODO] [Code] [Video]
• Reasonable Cloud Practices with Java @ AWS - Adam Bien [Slides] [Code]

• Keycloak.X & quarkus - Kilian Schröder [Slides] [Code TODO]
• Java containerization deep dive - Damjan Gjurovski [Slides] [Code TODO]

• Kafka: Distributed Workload Scheduler - Igor Pernek [Slides TODO] [Code TODO] [Video]
• CLIs with Java, Quarkus, PicoCLI - Sebastian Daschner [Slides] [Code TODO] [Video]

• Event-Driven Architecture aka. 7 years with Axon Framework - Andreas Grill Gerhard Hipfinger [Slides] [Video]
• The beauty of the monolith - Philipp Seifert-Kehrer [Slides] [Video]

• Microservice communication done right - Damjan Gjurovski [Slides] [Code TODO] [Video]
• Modern observability with OpenTelemetry - Georg Pirklbauer [Slides] [Code] [Video]

• E.D.D.I. - Conversational AI Middleware mit Quarkus - Gregor Jarisch [Slides] [Code] [Video]
• Quarkus + Kubernetes - Onur Kasimlar [Slides] [Code Quarkus+K8s] [Code Quarkus+Opentelemetry] [Video]

• Solid: Foundation of Web3.0 for Java Devs - Timea Turdean [Slides] [Code]
• GraalVM & Spring Boot 3 - Rainer Hahnekamp [Slides] [Code] [Code] [Video]

• HATEOAS – Können REST-APIs Geschichten erzählen? - Maximilian Göke [Slides] [Code TODO] [Video]
• Location Transparency - Milen Dyankov [Slides] [Video]

• Angular ❤️ Spring Boot - Erich Stadler [Slides] [Code] [Video]
• Various ways to jOOQ - Klaus Unger Christoph Kober [Slides] [Code] [Video]

• Logging Considered Harmful? - Sebastian Daschner [Slides] [Code]
• OpenTelemetry for Java - Philipp Krenn [Slides] [Code]

• JSF is still alive - Rudy De Busscher [Slides] [Code]
• Spring Boot µService + CI/CD @ Openshift - Stefan Zaufl [Slides] [Code TODO]

• Java under the Hood of Elasticsearch - Philipp Krenn [Slides TODO] [Code TODO]
• Look Ma', I made a Website!: Keycloak, Meetup, Quarkus, Wordpress - Dominik Dorn [Slides] [Code]

• Hexagonical Arch & Architecture Testing - Stephan Prantl [Slides TODO] [Code TODO]
• Securing Quarkus Apps with OIDC and Keycloak - Stephan Kraft TODO [Slides TODO] [Code TODO]

• Java Performance - Kirk Pepperdine [Slides TODO] [Code TODO]
• Hibernate/Blaze Persistence - Christian Beikov [Slides] [Code]

• Property-based testing with Java - Jan Stępień [Slides TODO] [Code TODO]
• log4Shell - Philipp Krenn [Slides TODO] [Code TODO]

• faster JVM start-up techniques - Ionut Balosin [Slides] [Code]
• Rust for Java developers - Stefan Baumgartner [Slides] [Code TODO]

• MapDB + OpenSource Career - Jan Kotek [Slides] [Code TODO]
• Using Kafka&Opensearch at Willhaben - Matthias Seidemann [Slides TODO] [Code TODO]

• Hibernate 6 - Christian Beikov [Slides] [Code TODO]
• Java/JakartaEE @ Azure - Ed Burns [Slides TODO] [Code TODO]

• GraalVM: What's new, what's still great in GraalVM 21.3 - Gergö Barany [Slides TODO] [Code TODO] [Video]
• Distributed Performance Challenges - Andreas Grabner [Slides TODO] [Code TODO] [Video]

• Securing the Monolith with Keycloak - Marko Jurišić TODO [Slides TODO] [Code TODO] [Video]
• Whats new in Java - Dominik Dorn [Slides TODO] [Code TODO] [Video]

• Release early, release often! - Alexander Rothe TODO [Slides] [Code TODO]
• Spring tricks - Javid Asgarov [Slides] [Code TODO]
• Kubernetes Operators with Java - Donato Wolfisberg [Slides] [Code TODO]

• Unbiased Allocation Profiling - Philipp Lengauer [Slides TODO] [Code TODO] [Video]
• Tracing for Java Developers - Philipp Krenn [Slides TODO] [Code TODO] [Video]

• From Akka Persistence to Factory Automation - Roland Kuhn [Slides TODO] [Code TODO]

• Let's develop on Prod with Istio & Kubernetes - Bartosz Majsak [Slides TODO] [Code TODO]
• Blaze-Persistence GraphQL Support - Christian Beikov [Slides]] [Code TODO]]

• Lightweight Feature Environments with Spring Cloud + Kubernetes - Thomas Höfferl TODO [Slides TODO] [Code TODO]
• Apache Freemarker - Siegfried Göschl [Slides TODO] [Code TODO]

• Hazelcast Cloud - Richard Klavora [Slides TODO] [Code TODO]
• JPA + jOOQ + FlyWay - Thorben Janssen [Slides TODO] [Code TODO]

• Maximizing Performance with GraalVM: Java + Scala! - Thomas Wuerthinger [Slides TODO] [Code TODO] [Video]

• Spaß mit Microservices: Transaktionen - Lars Röwekamp [Slides] [Workflow Engines] [Video]
• Demystifying Java Language Features 9 - 11 - Ionut Balosin [Slides] [Video]

• Workshop: Getting started with OAuth 2.0 - Author [Slides TODO] [Code TODO]

• A BIM collaboration platform using Neo4j and JAVA microservices - Adam Eri [Slides TODO] [Code TODO]
• Project Quarkus: Kubernetes Native Java stack tailored for GraalVM - Dominik Dorn [Slides TODO] [Code TODO]

• It's all about the domain, honey - Fachliche Architektur für Java mit DDD - Henning Schwentner [Slides TODO] [Code TODO]

• Spring Boot: Autoconfiguration: Hintern den Kulissen - Marco Behler [Slides TODO] [Code TODO] [Video]
• Spring Boot: Testing - Erich Stadler [Slides TODO] [Code TODO] [Video]

• Entity Views - Not your father's DTOs - Christian Beikov [Slides TODO] [Code TODO]
• Kickstart your Gatling Performance Testing - Siegfried Göschl [Slides TODO] [Code TODO]

• Cloud Native, Service-Meshed Java Enterprise With Istio - Sebastian Daschner [Slides TODO] [Code TODO] [Video]
• Bulletproof Java Enterprise Applications for The Hard Production Life - Sebastian Daschner [Slides TODO] [Code TODO] [Video]

• Vaadin 10 Roadshow - Building modern web apps in Java - Matti Tahvonen [Slides TODO] [Code TODO] [Video]
• Running Vaadin 10 on Play!Framework - Dominik Dorn [Slides TODO] [Code TODO] [Video]

• API on the leash - Lukas ??? TODO [Slides TODO] [Code TODO] [Video]
• Jakarta EE and the road ahead - Mark Struberg [Slides TODO] [Code TODO] [Video]

• Parallel and Asynchronous Programming with Streams and CompletableFuture - Venkat Subramaniam [Slides TODO] [Code TODO]

• Quick Overview of Spring Boot 1.x - Dominik Dorn [Slides TODO] [Code TODO] [Video]
• Springs' PetClinic with a Graph-Database (Neo4J) - Daniel Jahre [Slides TODO] [Code TODO] [Video]
• What's new in Spring Boot 2 - Dominik Dorn [Slides TODO] [Code TODO] [Video]

• Intro Akka-Streams - Daniel Pfeiffer [Slides TODO] [Code]
• AsciiDoc+PDF - Siegfried Göschl [Slides TODO] [Code TODO]
• Event-Sourcing w/ Play! & Akka - Dominik Dorn [Slides TODO] [Code TODO]

• The cool and the cruel of MicroServices [[German]] - Mark Struberg [Slides TODO] [Code TODO] [Video]

• Play!@Craze - Peter Scheipl TODO [Slides TODO] [Code TODO]

• Intro to CrateDB: Distributed SQL & Search Database - Andrei Dan [Slides TODO] [Code TODO] [Video]
• Migrating from SQL to NoSQL: Remedying the Challenges of Migrating Oracle/Postgres/SQL to MongoDB/NoSQL - Marios Trivyzas [Slides TODO] [Code TODO] [Video]

• Camunda BPM - Stephan Pelikan [Slides TODO] [Code TODO]
• Getting started with Akka - Dominik Dorn [Slides TODO] [Code TODO]

• Event Sourcing using Akka on AWS [Daniel Pfeiffer] [Slides TODO] [Code]
• Source Dependencies with Maven and Gradle [Peter Palaga] [Slides TODO] [Code TODO]

• Continous Code Quality with the Sonar Ecosystem - Roman Pickl [Slides TODO] [Code TODO]

• Spring Boot under the hood - Nicolas Frankel [Slides TODO] [Code TODO]

• Model Driven Architecture & Design @ ING-DiBa - Markus Demetz [Slides]

• Microservices with the PlayFramework - Dominik Dorn
• Tools of the Trade - Dominik Dorn

• Blaze-Persistence for JPA - Christian Beikov, Moritz Becker
• Case Study: Spring Framework at Craftwork

• Intro to Kotlin
• JUnit 5

• What's new in Play Framework 2.5 - Dominik Dorn
• Lagom - the microservice framework - Dominik Dorn

• Redis
• Groovy Scripting

• NetRexx - human oriented language for the JVM
• PerfCake - Performance testing Martin Večeřa Pavel Macík [Slides TODO] [Code TODO]

• Se7en deadly deployment sins - Philipp Krenn
• Smart load balancing in the cloud with OptaPlanner - Lukáš Petrovický, Red Hat Czech

• AWS Deployment Mechanics [Workshop] - Philipp Krenn

• How far do you get with Spring Boot in one hour? - Christian Köberl
• One VM to rule them all (GraalVM) - Matthias Grimmer

• Playframework 2.4 - Dominik Dorn
• Akka-Persistence - Dominik Dorn

• Event Sourcing & CQRS - Dominik Dorn

• Apache Tapestry 5 - Adam Zielinski
• Java Server Monitoring: Tipps and Tricks - Siegfried Göschl

• Bernhard Wallisch - "ANTLR - the compiler compiler"
• Arno Schmidmeier - "Anwendungsszenarien für AOP"

• Mihai Radulescu - "Knowledge In a Wiki"
• Siegfried Goeschl - "Introducing Apache Commons Exec and Commons Email"

• Roland Hoermann, "Business Applikationen schnell entwickeln fuer das JVx Framework Live!"
• Gerald Bauer, "(J)Ruby in der Praxis: Erstellung von PDF Dokumenten aus HTML Vorlagen mit Ruby Skript"

• Robert Baumgartner and Lixto Development Team, "Lixto Online Market Intelligence"
• Gerhard Hipfinger, "Apache Wicket"
• Nachtrag

• Vorbereitungen [Slides]

• Sergey Mikhanov, "Introducing JAIN SLEE"
• Mark Struberg, "JSR-299 - Contexts and Dependency Injection"

• Cocoon 3 - Student projects [Slides]
• Cocoon Project - StAX and the pipeline - Andreas Piber [Slides]
• JDO Extensions for the XML Code Generator - Lukas Lang [Slides]
• Accessing Web Sites as Web Services - Andreas Hubmer [Slides]
• Hoppla - Small and Home Office Backup and Migration - Florian Motlik [Slides]
• TIM aka EPROG2 with Ruby on Rails [Slides]
• The Sound of Shopping - Christoph P. [Slides]

• TeX, LaTeX und der ganze Rest [Slides]
• LaTeX Quickintro - Christoph P. [Slides]
• Layouting with the memoir class - Martin Schürrer [Slides]
• Producing HTML and Slides with LaTeX [Slides] [Code]

• Event Driven Architectures with Open Source Frameworks [Slides]
• Google Web Toolkit - Hans Sowa [Slides]

• Tony Fricko, "Widgetization of the web - and how to take widgets safely into the enterprise"
• Michael Chytracek, "SAP as Java Technology Provider?!"

• RESTful Webservices with JSR 311 - Florian Motlik [Slides]

• QtJambi - Java bindings for the mighty QT-framework [Slides]

• Inversion of Control [Slides]
• Guice [Slides] [Code]
• Springframework [Slides]

• Maven Reloaded [Slides]
• Scala Lightning Talk [Slides]

• OSGi - The Next Generation Java Service Platform [Slides]
• TechTips #1 [Slides]

• Christoph Atteneder, "Adobe Flex 3 - Engaging User Frontends"
• Dieter Hovorka, "Next generation of RIA Technologies"
• Markus Struberg, "The Git SCM - a little bit of git"

• OurMovies - Yet another MovieManager [Slides]

No meetings recorded in 2007

No meetings recorded in 2006

• Peter Lieber - "SparxSystems Enterprise Architect"
• Jürgen Höller - "Das Spring-Framework"

• DI Michael Schaffer - "Model Driven Architecture using OptimalJ"
• Manfred Geiler, Martin Marinschek, Thomas Spiegl - "Apache myFaces - Open Source Java Server Faces"

• Rainer Dollinger, "Lucene - ein flexibles Framework für Volltextsuche"
• Ing. Paul Palaszewski, "Java und Performance? Ja, das geht!"

• Dipl.-Ing. Roland Triendl, "Location aware communication services for mobile devices"
• Horst Scheruga, "The art of logging - introduction to Log4J"

• Ing. Alfred Madl, "JOnas - The Java Open Application Server"
• Gerald Bauer, "Grooooovy Babe - Jazzing Up Plain Old Java"

• DI Gernot Koller, Manfred Weigl - "Apache Cocoon and RSF"
• Martin Pöschl - "Torque and OJB, The Apache Persistence Framework"

• Patrick Peck - "Java & .NET Interoperability"
• DI Roland Triendl - "Mobiles Java - Status und Ausblick"

• Ing. Paul Palaszewski (Hons) B.Sc. - "Agile Software Entwicklungsmethoden"
• DI Siegfried Göschl - "Canoo Webtest"

• Ing. Alfred Madl - "Enhydra Octopus"
• Gerald Bauer - "Jython and Jelly - Scripting Power for Java and XML"

• Lukas Mroz - "Processing Gigabytes in Seconds - Memory and Performance Issues for 2D/3D Image Processing with Java"

• Mag. Klaus Kreuzwieser, Franz Luef - "Financial Fusion Java Message Broker - Das ultimative Messaging"
• Gerald Bauer - "Spice Up XML UIs With SVG (Scalable Vector Graphics): Create High-End 2D Graphics in XML"

• Ing. Van Hai Rafael Scheiflinger - "Java@SAP"
• Philipp Gühring - "XSLT, dokumentorientiertes Arbeiten"

• Markus Aistleitner & DI Christian Müller - "e-Solution Applikations Framework in Java"
• DI Siegfried Göschl - "The Stairway to MAVEN"

• DI Alexander Forst-Rakoczy - "CORSO - Space Based Computing with Java"
• DI Bernd Wender - "Velocity in der Anwendungsentwicklung"

• Christian Weber - "Adaptive J2EE Application Architectures - Performance Optimization Using OptimalJ"
• DI Jutta Eckstein, Nicolai Josuttis - "eXtreme Programming - Eine moderne agile Softwareentwicklung"

• Roman Waitz - "The Java 2 Micro Edition"

• Christian Weber, Kurt Aigner - "J2EE development and testing environment OptimalJ/NuMega Dev Partner"

• Erich Gstrein - "Erfahrungen mit Poseidon UML"

• Mag Gerald Bauer - "WebStart"

• Dr. Gerhard Weishaar "Testautomatisierung und Extensibility für Java"
• DI Roland Triendl - "CVS in the Enterprise"

• DI Christian Liska, "Java Media Framework & Java 3D"

• Alfred Madl - "JET - ein Java native Compiler für Win32"

• DI Richard Geyer & DI Martin Kahr - "EJB for Rookies"

• Bernhard Herzog - "C# and .NET vs. Java and J2EE"

• DI Siegfried Goeschl - "Testen verteilter Anwendungen"