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.

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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Step up your coding with the Continuous Feedback Udemy Course: Additional coupons are available

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

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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

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If you want to know what I spoke about in @jcon_conference in Germany, here's an interview I did at the @foojayio podcast:

#Java #JCON #JakartaEE #AI #A2A

02:06 PM · May 04, 2026

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Our team loves to meet and talk with the Java community from around the world. If you want to learn more. You can find all OmniFish presentations at: https://speakerdeck.com/omnifish, including links to the source code of related demos. Or get in touch for a free consultation call.

10:13 AM · April 30, 2026

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Another happy customer :)
"Their expertise and flexible hands-on troubleshooting support accelerated resolution of several unexpected hurdles and ultimately got us to a successful upgrade outcome."

If you would like to discuss how we could help your company, get in touch.

09:55 AM · April 21, 2026