Java Patching at Incident Speed: Lessons from the eMudhra CA Compromise
Browsers blocked the compromised eMudhra CA keys in hours. Learn why Java estates lag, and how security-only Java patching cuts testing and …
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.
Spring Boot's Hidden Secret for Configuration: EnvironmentPostProcessor
How to ship default configuration from a shared Spring Boot starter so services can still override it.
From Google Drive to Syncthing over Tailscale
Why my KeePass database left Google Drive, and how Syncthing over a Tailscale mesh syncs it between a Synology NAS, a Mac, an iPhone, and an …
dukehoff-decide: Typed, Calibrated Decisions from Small Language Models
Many LLM calls in Java apps are multiple choice. dukehoff-decide answers them with a small local model and returns a typed value with …
No Quote, No Claim: Making an LLM Show Its Sources in Java
My job portal asks Gemini why a job fits a candidate. Every claim must quote its source, and a few lines of plain Java drop any quote that …
New on Foojay: Television, Statistics, Java Conferences, Coming Soon and Week in Review
Five new pages on foojay.io: Java videos from YouTube, the numbers behind Foojay, a map of Java conferences, a peek at the articles that are …
Context Is a Budget: What Changed in Our Team's Process When We Started Using AI Coding Agents
A practical, tool-agnostic workflow for specs, tests, review loops, worktrees, and team-owned configuration when coding agents join …
CheerpJ 5.0: Java 21/25 in the browser, full OpenJDK, and a new WasmGC engine
CheerpJ 5.0 brings Java 21 and 25, a complete OpenJDK build, and an experimental WasmGC execution engine to the browser.
Optimizing nanosecond operations: when the CPU cache matters
A check took 29 s. Removing it saved 24 s - the rest moved to a line we didn't touch. Why?
178 viewsFoojay Podcast #104: 53 CVEs, Two Emergency Releases: Why Java Security Holds Up with Simon Ritter
A record 53 CVEs and two out-of-cycle releases in one week. Simon Ritter explains what happened, why Java security holds up, and how to stay …