Upgrading from Java 21 to 25: What Actually Breaks
Seven changes between Java 21 and 25 that break builds, startup or behaviour, each reproduced on both JDKs, and how to find them before you …
Friends Of OpenJDK Today
Every article on foojay.io, newest first: OpenJDK, the JVM, Java tooling and the ecosystem around them, written by the Java community.
77 viewsFoojay Podcast #103: Killing Reflection at Build Time with Dmitry Moskalyuk and Shai Almog
A backend data layer and a cross-platform UI framework both moved reflection to build time. Dmitry Moskalyuk and Shai Almog explain why, and …
Lottie4J 1.2.7: A Performance Release
Lottie4J 1.2.7 focuses on performance: image assets are decoded once and cached, track mattes reuse their buffers between frames, and GC …
Pi4J V5.0.0: Work in Progress
What is changing towards Pi4J V5.0.0: a big API cleanup, a simpler Context, parallel ports, RISC-V support, better board detection, and a …
Build Your First SaaS with MongoDB Ephemeral Clusters
Provision a MongoDB Atlas Ephemeral Cluster with one API call, then have an AI coding agent build a full-stack Spring Boot and React job …
Apple Shouldn't Dictate Your App's Redesign Schedule
Adopt Xcode 27 without moving your redesign schedule. This week: Liquid Glass, a JPA inspired ORM, OpenTelemetry, WebSockets and push …
A Smaller, Faster Java Server with a Spring-Style API
Build a smaller native Java service with Spring-style transactions and dependency injection. Inspect the generated code and compare local …
Scraping websites and bot-protection
The levels of bot protection I met while scraping genealogy sites, from a bare curl to shell-launched Chrome, and how to get past each one.
Lightweight Spring Boot Monitoring Without Prometheus and Grafana
Monitor Spring Boot applications on a small VPS using Actuator and StatLite, without operating a full Prometheus and Grafana stack.
What's New In The October 2026 Azul Payara Release?
Payara Community 7.2026.10 drops the elevated-permissions requirement for SSH nodes, and Azul Payara patches three security issues on every …