Friends of OpenJDK Today

Table of Contents The setupThe resultsWhy the differenceWhen to use itSpring Batch jobs usually follow the same pattern: an ItemReader streams rows, an ItemProcessor transforms each one, and an ItemWriter writes them out, chunk by chunk. A chunk-oriented step wires …

Table of Contents PrerequisitesStep 1: Generate the ProjectStep 2: Create the ServiceStep 3: Create the producersStep 4: Define ResourcesConclusionModern organizations store large volumes of information in documents, databases, internal platforms, support systems, policies, and operational tools. However, having data does …

Codename One Push V3 adds typed messages, managed credentials, segmentation, analytics, and Surface updates. Existing push apps should test the new cloud endpoint before next week’s cutover.

Table of Contents SetupQuerying a file on the internet with SQLQuerying a file on the internet with SQLWhere this is actually usefulSumming upDuckDB is described as “SQLite for analytics,” which is true: it’s an in-process database engine that runs inside …

Table of Contents Two Comments, Two New FormatsABC Notation, In and OutGuitar Pro: An ExperimentBetter-Looking EngravingUnder the HoodStill 0.0.x, Still ListeningLast week I introduced Sheetmusic4J, a Java(FX) library to render and interact with sheet music. That first 0.0.1 release was …

Table of Contents Quick recap – what is Jakarta Agentic AI?What’s in our First MilestoneGet involved!Jakarta Agentic AI just shipped its first deliverable: version 1.0.0-M1 is live on Maven Central and the draft 1.0 specification is out for review. The …

Table of Contents The problem nobody talks about until productionWhat the idempotent Spring Boot starter doesWhat happens when things go wrongIdempotent Spring Boot and Concurrent Requests: the case people forgetThe exactly-once caveat I chose to be loud aboutQuick setup for …

Codename One’s JavaScript port is now open source, available on every plan, and buildable locally without an account. ParparVM is the default, while TeaVM remains available through a build hint.

Table of Contents CoreApplicationsGamesComponents, Libraries, ToolsPodcasts, Videos, BooksMiscellaneousJFX CentralHere are the JavaFX LinksOfTheMonth of July 2026. You can find the weekly lists on jfx-central.com. Did we miss anything? Is there anything you want to have included in one of the …

Table of Contents The talk: Keeping Your Java Hot – Solving the JVM Startup and Warmup ProblemWhy join your local JUG this August?The full tour detailsSummer conference season goes quiet. Most major Java events wrap by June, CFPs go dark …

Table of Contents Step 1 — Get the original example running1.1 Install Deep Netts into your local Maven repository1.2 Clone and run the example1.3 Understand what’s in the dataStep 2 — Make the split deterministicStep 3 — Train and export …

Table of Contents The QUERY MethodSafe and idempotentMeaning comes from Content-TypeExplicitly cacheableDiscovery via Accept-QueryThe equivalent resourceFamiliar error semanticsA decade in the makingWhere ecosystem support stands todayApache TomcatEclipse JettyJakarta ServletWhat about Spring?Why Quarkus can do it todayThe example: a product catalog …

Table of Contents Same Approach as Lottie4JBuilt on MusicXMLFour Repositories, One LibraryUsing the LibraryVersion 0.0.1, and What’s NextI’m building MelodyMatrix with my son, an application to look at and play along with music. The app already shows a song in …

Table of Contents July 2026August 2026Foojay wouldn’t exist without the many contributions from its community, whether it’s a single post or an ongoing stream of knowledge sharing. That’s why we’ve started highlighting two of them each month as Featured Authors. …

Table of Contents What’s ChangingWhy NowCSPU Versus CPUWhat You Need To DoAzul ReadinessConclusionIn an announcement on the OpenJDK Updates Mailinglist on July 20, 2026, Rob McKenna explained a change in the Oracle security release cycle for JDK builds. They plan …

Codename One statically links its lightweight UI into your native app, so an OS update cannot silently redesign it. New native-reference fidelity tests let us adopt iOS 26 Liquid Glass and Material 3 on our schedule without surrendering control of the pixels.