🚀 JEP 401: Value Objects And JEP 539: Strict Field Initialization merged into the JDK mainline - github.com/openjdk/jdk/... #jvm #java

8389219: Implement JEP 401: Value Objects (Preview) by MrSimms · Pull Request #31120 · openjdk/jdk

This pull request implements the first preview of JEP 401: Value Objects (Preview). This pull request also includes the implementation of JEP 539: Strict Field Initialization in the JVM (Preview). ...

github.com

🎯 JEP 401 updated to target JDK 28 Title: Value Objects (Preview) Type: feature Release: 28 See openjdk.org/jeps/401

Something big might happen to the Kotlin Multiplatform Ecosystem 👀 We were never too happy about how Kotlin publishes and resolves KMP libraries. It takes up significantly more space than it has to, produces a ton of artifacts and Maven modules, and is just... complex!

Beep, beep! Early benchmarks of the Quixotic AI stack (JVM) vs. llama.cpp qxotic.ai

@azulsystems.bsky.social Hi, it seems like the Zulu download API is failing (520 error) and causing all GitHub Action #Java installs to fail for many projects api.azul.com/zulu/downloa...

Building the Latest OpenJDK from Source with Docker 🔗 jfumero.dev/posts/2026/0...

🎯 JEP 534 proposed to target JDK 27 Title: Compact Object Headers by Default Type: feature Component: hotspot / runtime Release: 27 See openjdk.org/jeps/534

Spent better part of my time last few months on this most satisfying piece of work. So many low-level things to obsess about. It was the first time in my life I looked at results, auditing why performance improved on 20+ benchmarks, but not on THIS ONE. github.com/openjdk/jdk/...

8366041: Shenandoah: Late Barrier Expansion by JohnTortugo · Pull Request #31140 · openjdk/jdk

This PR implements Late Barrier Expansion (LBE) for Shenandoah. Please see the issue itself for more discussion/overview. Similar to G1 and Z, instead of expanding Shenandoah barriers early and car...

github.com

The initial source code for Project Brisbane has dropped! Project Brisbane is a JCE provider that uses the Foreign Function & Memory API to encapsulate a FIPS 140 validated OpenSSL library. See github.com/openjdk/bris... for more details and subscribe to brisbane-dev@openjdk.org. #openjdk #crypto

GitHub - openjdk/brisbane: https://openjdk.org/projects/brisbane

https://openjdk.org/projects/brisbane. Contribute to openjdk/brisbane development by creating an account on GitHub.

github.com

#Kotlin 2.4.0-Beta2 introduces experimental support for "collection literals" - kotlinlang.org/docs/whatsne...

Kotlin by JetBrains@kotlinlang.org · 4mo ago

📢 Kotlin 2.4.0-Beta2 is out! Learn more: ➡️ kotl.in/2-4-0-beta2

Steven Madow captured this awesome close-up shot of Artemis ll engine, using a Panasonic GH5 and a Lumix G Leica 50-200mm f/2.8-4 lens. This photo was captured at 1/8000s, f/16, and ISO 100. Beautiful (and not BS AI) petapixel.com/2026/04/03/h...

✏️ JEP 8377806 was drafted Title: HTTP over Unix Domain Sockets Type: feature Component: core / net See openjdk.org/jeps/8377806

"makes UseCompactObjectHeaders default" 👏 github.com/openjdk/jdk/...

Make UseCompactObjectHeaders the default and adjust CDS archives. by coleenp · Pull Request #30322 · openjdk/jdk

This change makes UseCompactObjectHeaders default and switches the sense of the CDS archive naming. Now classes.jsa is with UseCompressedOops + UseCompactObjectHeaders (both default). Then theres...

github.com

Well, #Java 26 is boring, except for the #JVM

Johannes Bechberger@mostlynerdless.de · 5mo ago

Java 26 is here, but it's boring. Nothing really exciting. But that's a good thing, as the boring stability is what made Java successful (co-written with @lutskedev.bsky.social): mostlynerdless.de/blog/2026/03...

Check out a sample server using wasi-http built with our early #WebAssembly Component Model support in @Kotlin! 🤩 github.com/Kotlin/sampl... Still early, but very satisfying to see it working ✨ Give it a spin and share what you build 🚀 #Wasm #Kotlin #ComponentModel 1/2👇

New article! Did you know #Kotlin has mandatory varargs? ivan.canet.dev/blog/2026/03...

Kotlin tricks: Mandatory varargs - Ivan “CLOVIS” Canet

Software engineering, open source and computer security

ivan.canet.dev

Nice terminal UI to explore JFR profiles using #TamboUI By Jaroslav Bachorik jbachorik.github.io/posts/jfr-sh... #jfr #java #profiling

inference4j: Java Inference API for Onnx models. Run AI models in Java. Three lines of code, zero setup. #ai #inference #java #models #onnx github.com/inference4j/...

GitHub - inference4j/inference4j: Java Inference API for Onnx models

Java Inference API for Onnx models. Contribute to inference4j/inference4j development by creating an account on GitHub.

github.com

Java interop: Full (runtime class loading) 🤯 #GraalVM #JVM

(λ. borkdude)@borkdude.bsky.social · 5mo ago

Wanna try a faster alternative to jbang using GraalVM native-image + Crema? github.com/borkdude/cre... ~20-30ms for executing Java "scripts" with dependencies. It's a shame the name JavaScript was already taken! #clojure #graalvm #java

Today, @maxandersen.xam.dk and I are happy to announce TamboUI, a terminal UI framework for the Java ecosystem! melix.github.io/blog/2026/02...

Out with the old, in with the new... Bruno Borges created this site on modern Java usage: https://javaevolved.gith...

Protobuf4j (protoc compiled to Wasm → JVM bytecode) now supports #Kotlin code generation - github.com/roastedroot/...

The Vite for Kotlin test suite fails with Kotlin 2.3.0 because... Kotlin Wasm has been optimized enough, that the generated Wasm file is so small, that Vite decides to inline it entirely, so there is no visible Wasm in the output

#JDK26 fixes one of the last remaining virtual thread pinning issues, virtual threads now unmount from the carrier instead of pinning while waiting on class initialization by another thread. Better performance, no deadlocks - jdk.java.net/26/release-n... #JVM

Project exposing a Delayed Queue, for #Java, #Kotlin and #Scala … a database-powered message queue that can also delay messages, with support for your favourite RDBMS. github.com/funfix/dat...

GitHub - funfix/database: Database toolkit for the JVM

Database toolkit for the JVM. Contribute to funfix/database development by creating an account on GitHub.

github.com

Using the #JDK HttpClient, or … not. Well it depends on each one’s use cases. blog.arkey.fr/2026/02/08/t...

10+ reasons to NOT use JDK’s HttpClient

Java mostly, and general tech

blog.arkey.fr

Syntax highlighting in Java, without the pain #Chicory #java

Syntax highlighting in Java, without the pain | Chicory

A week ago, my friend Max told me he couldn't find a good library for code syntax highlighting in Java.

buff.ly

✏️ JEP 8361105 was drafted Title: Code reflection (Incubator) Type: feature Component: core See openjdk.org/jeps/8361105

luizhespanha.substack.com/p/battling-o...

Battling OOMs: The Unexpected Villain in our Migration from AL2 to Amazon Linux 2023

Introduction

luizhespanha.substack.com

Nice... seems like most of the issues with the OpenAPI #Ktor compiler plugin got fixed in this release. It generates a good enough OpenAPI spec out of the box without needing the new describe DSL #kotlin #ktor #jvm

Kotlin by JetBrains@kotlinlang.org · 6mo ago

Ktor 3.4.0 is out! 🎉 The release improves stability and brings new features: 🔶 Zstd compression 🔶 OkHttp duplex streaming 🔶 Structured concurrency for the HTTP request lifecycle 🔶 OpenAPI generation from code Read the blog post for details ⬇️ https://kotl.in/n31gtm