How much will post-quantum migration cost your Java codebase?
A static auditor that estimates what a post-quantum migration will cost a Java codebase, run across 27 popular Java projects to show where …
Week in review: 28 September 2026
New authors
Welcome to Arpan Sharma, Ishan Shah, Dana Crane, Alex Abashev, Libán Bande González and Alexey Gavrilov, who published their first article on foojay.io this week.
Published this week
Testing Kafka Consumer Recovery Contracts With Testcontainers and JUnit
Use Testcontainers and JUnit to test Kafka consumer recovery contracts for duplicate delivery, malformed records, and offset-boundary …
The Java 21 Doomsday Clock Countdown
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 …
Durable Execution Is a Property, Not a Product
Durable execution is a property your existing database can provide, not a product you must buy. Measured, with receipts you can run …
JavaFX Links of September 2026
Here are the JavaFX LinksOfTheMonth of September 2026. This was a big month with the release of JavaFX 27!
Lies, Damn Lies and Benchmarks
Codename One tackles GC, maps, startup, and JavaScript overhead, and adds native drag and drop plus cross-device continuity. Javadoc joins …
My love-hate relationship with Java formatters
Learning to love google-java-format, why AI agents make formatters matter even more, and why palantir-java-format now has a fork: …
Announcing 'Skinning JavaFX Applications'
A practical, code-first book on building modern, visually distinctive JavaFX interfaces — from theming to custom dashboard controls built …
Lathe: A Java Language Server That Works Straight From Your Maven Build
No project import, no classpath setup — Lathe takes its whole model from your Maven build, so the editor never drifts from what actually …
Why Every JVM In Your Fleet Warms Up Alone
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, …
Changes Included in Release 26.08 of Azul Zing Builds of OpenJDK
Azul Zing Builds of OpenJDK, the optimized Java runtime within Azul Platform Prime, has reached the release of the 26.08 Stable Release …