Friends of OpenJDK

Friends of OpenJDK Today

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

By embracing the new features in Java 22, 23, and 24—such as unnamed variables and patterns, Markdown in Javadoc, the Class-File API, and …

Jul 23, 2025 Tim Kelly

MongoDB’s support for multi-document ACID transactions gives you flexibility when single-document atomicity isn’t enough.

Jul 22, 2025 Miro Wengner

After brainstorming, our Java Champion Education group agreed to create a newsletter with a 14 days cadence.

Learn how to build scalable, event-driven microservices using Spring Cloud Stream. This guide covers core concepts, messaging patterns, and …

In early July, the DevBcn conference in Barcelona featured a diverse lineup of speakers, covering topics across multiple technology domains. …

This is the next part in the series of "JavaFX in Action" interviews. Are you working on a fantastic JavaFX application? Let me know, and …

Jul 17, 2025 Tim Kelly

Let's use MongoDB with LangChain4j to create a simple RAG application. LangChain4j abstracted away a lot of the steps along the way, from …

Jul 17, 2025 David Parry

Get hands-on experience with the exact code examined in this article, along with exercises, debugging techniques, and best practices for …

Spring Boot API documentation with Redocusaurus: from exporting your OpenAPI spec to setting up a beautiful developer portal in minutes.

At Quantexa, we love Scala. This may be the first dedicated article on Foojay.io about Scala. I hope my colleagues and I can add more in due …