NLJUG – Nederlandse Java User Group NLJUG – de Nederlandse Java User Group – is opgericht in 2003. De NLJUG verenigt software ontwikkelaars, architecten, ICT managers, studenten, new media developers en haar businesspartners met algemene interesse in alle aspecten van Java Technology.
J-Summer was NLJUG’s End of Summer Unconference, focused on the question: How can we work …
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September 2026
J-Summer: Dutch Java Community Leads Connected
J-Summer was NLJUG’s End of Summer Unconference, focused on the question: How can we work together t…
August 2026
NLJUG Speaker Mentoring Programma : 20 toekomstige sprekers, één geweldige avond
Op 7 juli verzamelden 20 enthousiaste deelnemers zich op het OpenValue-kantoor in Utrecht voor de ee…
June 2026
Devmio.nl our Learning and Knowledge platform free for all our NLJUG Members
Three weeks ago, as part of your NLJUG membership, you received access to Devmio.nl, our new learnin…
June 2026
NLJUG Speaker Mentoring Program 2026
It seems like J-Fall 2026 is still far away, but the call for papers is open and we are looking for …
May 2026
J-Spring 2026 The International Java Conference by NLJUG June 4th
In two weeks, J-Spring is finally here, and the entire team is really looking forward to it! The pre…
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Java Magazine is now also available digitally on Devmio.nl
The Java Magazine, which every NLJUG member receives four times a year in print, is …
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An Exploration of Cutting-Edge Updates – Ana-Maria Mihalceanu
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Java Magazine 4
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Java Magazine 3 is uit
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JAVA MAGAZINE 2 – 2025
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Java Articles by Foojay.io
September, 2026
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22 September
Announcing The New Foojay
Author: Frank Delporte Original post on Foojay: Read More Foojay has a new home: a static, open-source site where publishing an article is a pull request. Same URLs, same archive, much faster, and new features.
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20 September
World geography gotchas
Author: Nicolas Frankel Original post on Foojay: Read More Years ago, a colleague of mine told me about two pockets of foreign land surrounded by Switzerland: Campione d’Italia and Büsingen am Hochrhein,…
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17 September
BoxLang 1.17.0 Released: Module Inception, CLI Checker, Jar Loading and much more!
Author: Cristobal Escobar Original post on Foojay: Read More BoxLang has always been an extensible language. As of 1.17.0, it is a hierarchically extensible one. Modules can now contain other modules; aka Module…
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16 September
What’s New In The September 2026 Azul Payara Release?
Author: Dominika Tasarz Original post on Foojay: Read More MicroProfile 7.1 lands on the commercial lines, OpenTracing is removed, and Jakarta Agentic AI reaches Payara Micro in the September Azul Payara release.
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15 September
Can You Explain the Diff Your AI Agent Just Wrote?
Author: Viktoria Evdokimova Original post on Foojay: Read More Every Java developer has been in a code review where the question is simple: What does this method do? The answer used to tell you something.
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15 September
How I Built an AI Assistant for My Career with Java, Spring AI, and MongoDB
Author: Ricardo Mello Original post on Foojay: Read More How one developer built a personal AI assistant in Java using Spring AI, MongoDB Vector Search, conversation memory, and tool calling with Calendly.
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9 September
Masking a JVM thread dump without breaking the analysis
Author: Felipe Maschio Original post on Foojay: Read More A few weeks ago I posted on r/java about detecting virtual thread pinning from a plain thread dump. The technical discussion was fine. The comment that stuck with me had nothing to do with pinning: “the problem isn’t taking the dump, it’s that uploading a production dump to a third-party site …
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8 September
Debugging Is Invariant Discovery: What One Kafka Session Taught Us About AI Agents
Author: Viktoria Evdokimova Original post on Foojay: Read More #foojay-site-content for WordPress credentials (already have them from the first post). 2. foojay.io/wp-admin -> new post, paste this Markdown, Save Draft, Preview in a new tab. 3. Code blocks: “Convert to blocks” / “Code Insert”, set language Java for the two Java snippets. 4. Featured image: required. Use articles/explyt-kafka-tid-invariant/en/cover-one-symptom-ten-problems.png (1672×941, branded, …
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8 September
Community Spotlight: BoxLang Express Brings Node-Style HTTP to the JVM
Author: Cristobal Escobar Original post on Foojay: Read More If you’ve spent years in Spring Boot, Micronaut, or Jakarta EE, “web framework” usually means a servlet container, an embedded Tomcat or Netty, a build step, and a fat jar before anything answers a request. What if you could skip all of that and still be on the JVM? BoxLang Express, …
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8 September
“Commit created” — but it isn’t: why the agent’s word needs external verification, and what the mistake costs
Author: Viktoria Evdokimova Original post on Foojay: Read More A detailed report reads like proof. The agent lists the files it touched, names the branch, quotes a commit hash, adds a test count and closes with “done”. The work has a shape. The shape looks right. You have six more tickets. The report is model output. The commit, if it …
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