Profilers are great tools in your toolbox, like debuggers, when solving problems with your Java application (I’ve been on a podcast on this topic recently). I’ll tell you some of their problems and a technique to cope with them in this article. There are many open-source profilers, most notably JFR/JMC, and async-profiler, that help you to find and fix performance …

We’re excited to announce that we’ve recently introduced three new membership tiers at NLJUG: Base, Core, and Key. We’ve made this change to give our members more options and flexibility to choose the membership that best fits their needs. As a current NLJUG member, you may have noticed that your membership has automatically been converted to the Base membership. However, …

Before moving to Developer Relations, I transitioned from Software Architect to Solution Architect long ago. It’s a reasonably common career move. The problem in this situation is two-fold: You know perfectly well software libraries You don’t know well infrastructure components It seems logical that people in this situation try to solve problems with the solutions they are most familiar with. …

Following from my previous article, I wrote about putting the right feature at the right place. I used rate limiting as an example, moving it from a library inside the application to the API Gateway. Today, I’ll use another example: authentication and authorization. Securing a Spring Boot application I’ll keep using Spring Boot in the following because I’m familiar with …

February is a short month, but this list seems to be longer than ever… A lot of game and 3D development, releases, interesting ongoing development, and so much more to read. Enjoy reading and clicking! This is a summary of the Links Of The Week as published on jfx-central.com during February. JavaFX/OpenJFX Core Kevin Rushforth of Oracle announced on the …

Figure 1.: Hone your software design skills The aim of the article is to introduce my newly published book “Practical Design Pattern for Java Developers”. Together, we’ll explore today’s application development challenges and dive deeper into some of Java’s new language enhancements by exploring  the Builder Design pattern in more detail.  The days when applications were developed “ad hoc” seem …

This article is the second in a series about SBOMs, software supply chains, the government and you. I hope you are still hungry after the first article as more cake is available below! If you have read the first article in this series that introduces SBOMs SBOMs: First Steps in a New Journey for Developers | Foojay.io then you already …

Our microservices project contains quite a few pieces now. We have two databases, three API services, a user-view service for books, and a service to host our configuration. With so many pieces to manage, it would be nice to have something that orchestrates the individual services into a system, such as Docker Compose. Back in our Level 5 rendition, we …

Sometimes there are JavaFX apps that I would also like to use on my iPhone but I wrote them for the desktop and it’s always the question how to do that? These days the simple answer is use Gluon Mobile. But the real question remains… how to do it? To give you an idea, I will take my little game …

Update versus Upgrade: what’s the difference and what are the consequences of your decision? Since 2018, every six months we get an upgrade to a new OpenJDK version, and this year versions 20 and 21 will be released. Next to these six-month releases, OpenJDK distributor Azul, amongst others, provides four critical patch updates (CPU) and patch set updates (PSU) per …