Posts 267
Closing the Visual Gap Between the Official Lottie Webplayer and Lottie4J
A Lottie library is only as good as its output looks. If an animation renders differently in Lottie4J than it does in the official web player, that’s a bug, even when no …
JavaFX Links of June 2026
Here are the JavaFX LinksOfTheMonth of June 2026. You can find the weekly lists on jfx-central.com . Did we miss anything? Is there anything you want to have included in one of the …
From breadboard chaos to a real PCB: designing the Pi4J smoke test board
Testing a Java I/O library properly means testing it on real hardware. No mocks, no stubs, just actual pins doing actual things. For Pi4J, that means running the smoke test: a …
JavaFX In Action #27 with David Gutierrez about JMathAnim to Create Mathematical Animations
The JFX Central Links Of The Week is a great source to discover what is happening in the JavaFX world. One of the projects that caught my eye is JMathAnim, a tool to create …
A Fresh Design for webtechie.be
This website grew over many years into more than 260 posts, 220 videos, 100 podcasts, and 60 presentations. The old design buried most of that under a layout that no longer matched …
Lottie4J Meets LottieFiles: A Conversation with Naail Abdul Rahman
Lottie animations run on Android, iOS, and the web. Getting them working on the JVM is a different story. Lottie4J started as a question: can JavaFX render them without a WebView? …
JavaFX Links of May 2026
Here are the JavaFX LinksOfTheMonth of May 2026. You can find the weekly lists on jfx-central.com . Did we miss anything? Is there anything you want to have included in one of the …
JavaFX Links of April 2026
Here are the JavaFX LinksOfTheMonth of April 2026. You can find the weekly lists on jfx-central.com . Did we miss anything? Is there anything you want to have included in one of …
Links from the JCON talk 'Foreign Function & Memory (FFM) API on Raspberry Pi'
These are the links from the JCON talk in Cologne, Germany, on April 22, 2026: “The Wait is Over: Foreign Function & Memory (FFM) API brings modern Java to the Raspberry …
Debugging BentoFX in MelodyMatrix with Matt Coley, Scenic View, and an Honest Look at AI-Generated Code
There are bugs you can solve by yourself, and bugs where you just need to sit down with someone who knows the internals. This video is in the second category. MelodyMatrix uses …
Testing Lottie4J JavaFX Animations in GitHub Actions Without a Display: JavaFX 26 Headless to the Rescue
When I released Lottie4J 1.1.0 , I mentioned something a bit embarrassing in the release notes and this blog post : there was a new unit test to compare the JavaFX player output …
MelodyMatrix V1.0.0 Released: Shipping a JavaFX App with jDeploy, GitHub Actions, and Auto-Update
Some side projects take a while to get to a proper release. MelodyMatrix is one of those. The app has been downloadable for quite some time thanks to jDeploy , but there was no …
Validating Pi4J V4 on real hardware, catching bugs, and exploring the Ikalogic logic analyser
Pi4J contributor Tom Aarts joins Frank Delporte for a hands-on session focused on hardware testing in Pi4J V4. Tom has been a long-time contributor to the Pi4J ecosystem. He added …
JavaFX Links of March 2026
Here are the JavaFX LinksOfTheMonth of March 2026. You can find the weekly lists on jfx-central.com . Did we miss anything? Is there anything you want to have included in one of …
Lottie4J 1.2.0: dotLottie Support, Marker Playback, Cropping, and a Big Speed Boost
Version 1.2.0 of Lottie4J is out, and it’s again a big release! The headline feature is support for the .lottie container format, but that’s just the start. This …
Let's smoke some food with Pi4J, Vaadin, and Quarkus
Live stream with Matti Tahvonen and Frank Delporte with the smell of smoked food and fresh Java code! Matti from the Vaadin team shows a project that started as a Raspberry Pi side …
Lottie4J 1.1.0: Better Rendering, Smarter Debugging, and an animated Lottie4J Logo!
Just one week after the first public release of Lottie4J , the open-source Java library for rendering Lottie animations in JavaFX, version 1.1.0 is already out. And it’s a …
Controlling Electronics with Java 25 and the FFM API using Pi4J V4
Live stream with Nick Gritsenko and Frank Delporte about the Foreign Function and Memory (FFM) API that got introduced in Java 22, and how it was used to create a new plugin for …
Introducing Lottie4J, a Java(FX) Library to Parse and Play Lottie Animation Files
I’m proud to present a new JavaFX library: Lottie4J, that brings Lottie animations to JavaFX applications. I first learned about Lottie many years ago when we were developing …
Pi4J Joins the Commonhaus Foundation: Securing the Future of Java on Single-Board Computers
Open source software is built on passion, time, and dedication. But passion alone doesn’t guarantee the long-term survival of a project. Maintainers move on, life changes, …