Every now and then I get my hands on a Java project that requires to talk to a database. Depending on who of my team mates I'm talking to, database experts or Java developers, there exist different views on how to model and access data. In my early days a... (more…)

Overview I've seen Brendan Gregg's talk on generating mixed-mode flame graphs  and I wanted to reproduce those flamegraphs for myself. Set...

Problem Statement Even the most basic problems become interesting when you dig deep enough. Today, I would like to do a deep dive into measuring time in Java. We will start with the very basics of the Java API and gradually move lower in our stack: throug... (more…)

For more than 15 years I have worked with Java technologies, particularly on the server-side, with Java Enterprise Edition (Java EE). I… (more…)

Tutorial of Java 9 module system basics: how to declare modules with module-info.java, compile, package, and launch them and what module path and graph are. (more…)