https://foojay.io/Foojay is a place for Friends Of OpenJDK, providing free, reference materials and blogs for daily Java usage.Hugoen-usSun, 18 Oct 2026 00:00:00 +0000https://foojay.io/today/lottie4j-1-2-7-a-performance-release/Sun, 18 Oct 2026 00:00:00 +0000Frank DelporteJavaFXhttps://foojay.io/today/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 pauses drop by two thirds.https://foojay.io/today/pi4j-v5-work-in-progress/Sat, 17 Oct 2026 00:00:00 +0000Frank DelportePi4JRaspberry PiEmbeddedhttps://foojay.io/today/pi4j-v5-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 new release flow.https://foojay.io/today/build-your-first-saas-with-mongodb-ephemeral-clusters/Fri, 16 Oct 2026 00:00:00 +0000Tim KellyMongoJavaSpringTutorialshttps://foojay.io/today/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 tracker on it.https://foojay.io/today/who-decides-your-app-redesign/Fri, 16 Oct 2026 00:00:00 +0000Shai AlmogJavahttps://foojay.io/today/who-decides-your-app-redesign/Adopt Xcode 27 without moving your redesign schedule. This week: Liquid Glass, a JPA inspired ORM, OpenTelemetry, WebSockets and push callbacks.https://foojay.io/today/java-server-work-before-startup/Fri, 16 Oct 2026 00:00:00 +0000Shai AlmogJavahttps://foojay.io/today/java-server-work-before-startup/Build a smaller native Java service with Spring-style transactions and dependency injection. Inspect the generated code and compare local Linux startup,...https://foojay.io/today/bypass-bot-protection/Thu, 15 Oct 2026 00:00:00 +0000Nicolas FrankelSecurityToolshttps://foojay.io/today/bypass-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.https://foojay.io/today/lightweight-spring-boot-monitoring/Thu, 15 Oct 2026 00:00:00 +0000Ted KupolovJavaSpringObservabilityhttps://foojay.io/today/lightweight-spring-boot-monitoring/Monitor Spring Boot applications on a small VPS using Actuator and StatLite, without operating a full Prometheus and Grafana stack.https://foojay.io/today/whats-new-in-the-october-2026-azul-payara-release/Wed, 14 Oct 2026 00:00:00 +0000Dominika TasarzJakarta EEPayarahttps://foojay.io/today/whats-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 branch.https://foojay.io/today/what-i-learned-building-an-ai-code-reviewer-with-java-spring-boot/Wed, 14 Oct 2026 00:00:00 +0000Sweety717JavaSpringAIDeveloper ToolsGitHubhttps://foojay.io/today/what-i-learned-building-an-ai-code-reviewer-with-java-spring-boot/What I learned building an AI code-review workflow around GitHub Pull Requests, Spring Boot, and multiple AI providers.https://foojay.io/today/embedding-strategies-job-search/Wed, 14 Oct 2026 00:00:00 +0000Somil GargJavaAISpringTestinghttps://foojay.io/today/embedding-strategies-job-search/I stored two embeddings for every job in my Spring Boot job portal and measured which one finds the right jobs. One of them barely mattered, and my similarity threshold turned out to mean much less than I thought.https://foojay.io/today/introduction-to-error-prone-how-to-catch-bugs-at-compile-time/Tue, 13 Oct 2026 00:00:00 +0000Hüseyin AkdoğanJavaDeveloper Toolshttps://foojay.io/today/introduction-to-error-prone-how-to-catch-bugs-at-compile-time/Error Prone plugs into javac to catch code that compiles but is most likely wrong. A tour of its built-in checks, Refaster rules and custom BugCheckers.https://foojay.io/today/your-agents-dont-need-an-llm-to-negotiate/Mon, 12 Oct 2026 00:00:00 +0000Mauro MuraJavaAIDesign Patternshttps://foojay.io/today/your-agents-dont-need-an-llm-to-negotiate/A manager hands a job to one of three workers, and nothing in the program calls a model. It explains the protocol, and what doesn't survive a restart.https://foojay.io/today/testing-jakarta-ee-three-layers-three-tools/Mon, 12 Oct 2026 00:00:00 +0000Dominika TasarzJakarta EETestingTestcontainershttps://foojay.io/today/testing-jakarta-ee-three-layers-three-tools/A guide to Simon Laden's three-part series on testing Jakarta EE with WeldInitiator, Arquillian and Testcontainers, and the question each tool answers.https://foojay.io/today/media-partner-for-ocx27-and-jchampions-conference/Sun, 11 Oct 2026 00:00:00 +0000Frank DelporteConferenceEventshttps://foojay.io/today/media-partner-for-ocx27-and-jchampions-conference/Foojay is a media partner of OCX 2027 in Brussels and the jChampions Conference 2027 — dates, details, and how to submit a talk for each.https://foojay.io/today/keep-wordpress-if-youre-looking-for-trouble/Sat, 10 Oct 2026 00:00:00 +0000Andy DamevinSecurityOpinionhttps://foojay.io/today/keep-wordpress-if-youre-looking-for-trouble/~13K WordPress sites get hacked every day. Here's why static site generators are the answer, and how to migrate.https://foojay.io/today/why-another-java-server/Fri, 09 Oct 2026 00:00:00 +0000Shai AlmogJavahttps://foojay.io/today/why-another-java-server/Why we brought Codename One's mobile runtime to the server: small native Java executables, Go comparisons, and shared code from the app to its database.https://foojay.io/today/introducing-cbgenesis-ai-native-coldbox-starter-for-boxlang/Fri, 09 Oct 2026 00:00:00 +0000Luis MajanoBoxLangJavaAIDeveloper ToolsSecurityhttps://foojay.io/today/introducing-cbgenesis-ai-native-coldbox-starter-for-boxlang/cbGenesis 1.0 is a production-ready ColdBox starter for BoxLang with auth, RBAC, security, tests, admin tools, and AI-native guidance.https://foojay.io/today/how-to-create-test-install-agent-skills/Fri, 09 Oct 2026 00:00:00 +0000Maks DanylenkoAIDeveloper Toolshttps://foojay.io/today/how-to-create-test-install-agent-skills/A practical guide to creating, validating, testing, and installing Agent Skills in Claude Code, from SKILL.md to plugin eval.https://foojay.io/today/tryboxlang/Thu, 08 Oct 2026 00:00:00 +0000Luis MajanoBoxLangJavaCloudDeveloper Toolshttps://foojay.io/today/tryboxlang/Test BoxLang releases and CFML compatibility in your browser, backed by isolated AWS Lambda functions built from a single repository.https://foojay.io/today/introducing-jenesis/Thu, 08 Oct 2026 00:00:00 +0000Rafael WinterhalterDeveloper ToolsToolsMavenGradlehttps://foojay.io/today/introducing-jenesis/Jenesis is a Java build tool that reads the build from module-info.java: no build file to write, no plugins, no build tool to download.https://foojay.io/today/real-time-fraud-detection-kafka-vector-similarity/Wed, 07 Oct 2026 00:00:00 +0000Ricardo MelloJavaKafkaMongoMachine Learninghttps://foojay.io/today/real-time-fraud-detection-kafka-vector-similarity/How Java, Kafka Streams, and MongoDB vector search combine to catch fraud in real time, from rule-based guardrails to behavioral similarity scoring.https://foojay.io/today/green-build-wrong-task-a-working-agreement-for-java-teams-using-ai-coding-agents/Wed, 07 Oct 2026 00:00:00 +0000Viktoria EvdokimovaAIJavaTestingDeveloper Toolshttps://foojay.io/today/green-build-wrong-task-a-working-agreement-for-java-teams-using-ai-coding-agents/Three ways AI coding agents waste a Java team's afternoon, and the spec, locked tests and capped review loop that stop it. Webinar notes, agent-agnostic.https://foojay.io/today/adding-rag-to-jakarta-ee-11-app/Wed, 07 Oct 2026 00:00:00 +0000Luqman SaeedJakarta EEAIJavahttps://foojay.io/today/adding-rag-to-jakarta-ee-11-app/Build a RAG pipeline in a Jakarta EE 11 app with only the JDK HTTP client, Jakarta specs and MicroProfile Config: no vector database, no Python.https://foojay.io/today/java-in-the-browser-with-teavm/Tue, 06 Oct 2026 00:00:00 +0000Petr PravdaJavaDeveloper Toolshttps://foojay.io/today/java-in-the-browser-with-teavm/Build an editable Java example with TeaVM, React, and Vite, then explore the environment available to Java in the browser.https://foojay.io/today/featured-foojay-authors-for-october-2026/Tue, 06 Oct 2026 00:00:00 +0000Frank DelporteFoojayhttps://foojay.io/today/featured-foojay-authors-for-october-2026/Our Featured Authors for October are Bazlur Rahman and Nicolas Fränkel. Here is what they write about, and where to start reading.https://foojay.io/today/building-a-javafx-code-editor-control/Tue, 06 Oct 2026 00:00:00 +0000Libán Bande GonzálezJavaFXJavahttps://foojay.io/today/building-a-javafx-code-editor-control/Inside a custom JavaFX Control/Skin for a code editor: virtualized line numbers, keyword highlighting, bracket matching, multi-cursor editing, undo/redo and autocomplete.https://foojay.io/today/foojay-podcast-102/Mon, 05 Oct 2026 00:00:00 +0000Frank DelporteAndy DamevinHolly CumminsPodcastDeveloper ToolsSecurityJavahttps://foojay.io/today/foojay-podcast-102/Foojay walked away from WordPress after six years. Andy Damevin and Holly Cummins join to weigh CMS security and cost against Hugo, Jekyll and Roq.https://foojay.io/today/changes-included-in-release-26-08-of-azul-zing-builds-of-openjdk/Fri, 02 Oct 2026 00:00:00 +0000Matt Van OrderJavaRelease Noteshttps://foojay.io/today/changes-included-in-release-26-08-of-azul-zing-builds-of-openjdk/Azul Zing Builds of OpenJDK, the optimized Java runtime within Azul Platform Prime, has reached the release of the 26.08 Stable Release line.https://foojay.io/today/why-every-jvm-in-your-fleet-warms-up-alone/Thu, 01 Oct 2026 00:00:00 +0000Jiří HolušaJava CorePerformanceJEPshttps://foojay.io/today/why-every-jvm-in-your-fleet-warms-up-alone/Why you can't just copy a JIT-compiled method from one JVM to another: compiled code is a bet on one specific JVM's state. Identity, validity, and profitability all have to be checked before it's safe to reuse.https://foojay.io/today/lathe-a-java-language-server-from-your-maven-build/Thu, 01 Oct 2026 00:00:00 +0000Alexey GavrilovDeveloper ToolsJavaMavenhttps://foojay.io/today/lathe-a-java-language-server-from-your-maven-build/No project import, no classpath setup — Lathe takes its whole model from your Maven build, so the editor never drifts from what actually compiles.