Holger Isenberg

Holger Isenberg has done system operation and consulting around Java-based enterprise applications since 1999 in Germany and moved in 2016 to Silicon Valley now solving customer problems at Azul Systems Inc. In his spare time he applies his software engineering skills on public data provided by Mars spaceflight missions.

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What do you know about the code changes that were just introduced into the codebase? When will you notice if something goes wrong?

Jakarta EE 11: Beyond the Era of Java EE

This user guide provides a brief history of Java EE/Jakarta EE and a detailed overview of some of the specifications that will be updated in Jakarta EE 11.

Stable, Secure, and Affordable Java

Azul Platform Core is the #1 Oracle Java alternative, offering OpenJDK support for more versions (including Java 6 & 7) and more configurations for the greatest business value and lowest TCO.

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Migrating Browser-Based Java Applets to IcedTea-Web using JNLP

Let's use a 20 year old JAR, once created for a Java Applet to be run in the Java 1.1 Browser Plugin... and run it on JDK 11! It now runs outside of any Web Browser and without modifying its decades-old JAR. The Applet was once created and offered to browse through all raw color images uploaded by the Mars Pathfinder Lander which settled down on the planet on July 4th, 1997.

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Holger Isenberg

Java Core

Retweet on Twitter Foojay.io Retweeted

The hottest #Java unconference in the world is coming back 27-31 July 2026 (starting evening of 26th). Deep discussions about Java and life. We are making some seats available using a lottery system. Draw will be on Friday the 20th Feb. Sign up here: https://www.jcrete.org/lottery

08:45 PM · February 09, 2026

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Confession: I usually lose the Flow switching between Quality Gates and Code 📉😅

But I connected @claudeai + #SonarQube via #MCP

Verify & Fix vulnerabilities without touching the mouse.
Zero context switching. Pure flow. 🚀

https://foojay.io/today/claude-code-sonarqube-mcp/

#Java #AI @foojayio

03:56 PM · February 02, 2026

Retweet on Twitter Foojay.io Retweeted

Hola Java devs! 👋 The #SonarQube AI Code Assurance #article is LIVE on @foojayio ! 🎉

Stop just finding bugs. 🛑 Use SonarQube's new AI "Magic Button" to auto-fix them instantly! 🤯🪄

Crush that tech debt fast. 🚀☕️ #Java #AI @SonarSource

https://foojay.io/today/sonarqube-part-4-ai-code-assurance/

04:44 PM · January 19, 2026