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foojay is a place for friends of OpenJDK, providing free, reference materials and blogs for daily Java usage.

Just one week after the first public release of Lottie4J, the open-source Java library for rendering Lottie animations in JavaFX, version …

In the production environment, in a MongoDB Atlas database, a collection contains massive amounts of data stored, including aged and current …

Reactive Java is well suited to modern streaming, event driven applications. In this article, we'll walk through an example of such an …

The IntelliJ ecosystem is one of the most powerful development environments for JVM developers. Today, we’re excited to introduce the …

I'm proud to present a new JavaFX library: Lottie4J, that brings Lottie animations to JavaFX applications. I first learned about Lottie many …

DPoP is one of the most exciting developments in the IAM (Identity and Access Management) space in recent years. Yet many backend developers …

In this article, we will explore how to implement RBAC at the application level, using MongoDB to store user metadata and keeping the …

I built a Spring Boot 4 REST API that defines terms using Wikidata, orchestrated by an Embabel agent—no API keys, no local models, fully …

In my "Java on Single Board Computers" series, I already published several posts and videos in which I unpack the board, connect it for the …

In a recent design review, a customer was enriching new data as it came in. As the enrichment process was fairly complex, they ran into some …