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.

October, 2026

• 1 October

  Why Every JVM In Your Fleet Warms Up Alone

  Author: Jiří Holuša Original post on Foojay: Read More Why you can’t just copy a JIT-compiled method from one JVM to another: compiled code is a bet on one specific JVM’s state. Identity, validity, and profitability all have to be checked before it’s safe to reuse.

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• 1 October

  Lathe: A Java Language Server That Works Straight From Your Maven Build

  Author: Alexey Gavrilov Original post on Foojay: Read More No project import, no classpath setup — Lathe takes its whole model from your Maven build, so the editor never drifts from what actually compiles.

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• 1 October

  Announcing ‘Skinning JavaFX Applications’

  Author: Libán Bande González Original post on Foojay: Read More A practical, code-first book on building modern, visually distinctive JavaFX interfaces — from theming to custom dashboard controls built from scratch.

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September, 2026

• 30 September

  JavaFX Links of September 2026

  Author: Frank Delporte Original post on Foojay: Read More Here are the JavaFX LinksOfTheMonth of September 2026. This was a big month with the release of JavaFX 27!

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• 30 September

  My love-hate relationship with Java formatters

  Author: Alex Abashev Original post on Foojay: Read More Learning to love google-java-format, why AI agents make formatters matter even more, and why palantir-java-format now has a fork: open-java-format.

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• 30 September

  Lies, Damn Lies and Benchmarks

  Author: Shai Almog Original post on Foojay: Read More Codename One tackles GC, maps, startup, and JavaScript overhead, and adds native drag and drop plus cross-device continuity. Javadoc joins website search…

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• 30 September

  Durable Execution Is a Property, Not a Product

  Author: Nicholas D’hondt Original post on Foojay: Read More Durable execution is a property your existing database can provide, not a product you must buy. Measured, with receipts you can run yourself.

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• 29 September

  The Java 21 Doomsday Clock Countdown

  Author: Dana Crane Original post on Foojay: Read More Oracle’s free NFTC license for Java 21 has expired, and the October 2026 quarterly update is the first one enterprises have to pay for. Here are the three options left, and why the timeline is short!

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• 28 September

  Testing Kafka Consumer Recovery Contracts With Testcontainers and JUnit

  Author: Ishan Shah Original post on Foojay: Read More Use Testcontainers and JUnit to test Kafka consumer recovery contracts for duplicate delivery, malformed records, and offset-boundary failures.

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• 28 September

  How much will post-quantum migration cost your Java codebase?

  Author: Arpan Sharma Original post on Foojay: Read More A static auditor that estimates what a post-quantum migration will cost a Java codebase, run across 27 popular Java projects to show where the cost hides.

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