#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...

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

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

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

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

This is awesome, a single Actually Portable Executable (APE) compiled with #GraalVM + Cosmopolitan libc, runs on any OS and architecture. Cross-compilation was never possible for native-image... until now - github.com/oracle/graal...

It is starting to look like MCP is the new SOAP.

Calling native AI code from Java used to mean JNI pain or shelling out to Python. With the #FFM API, that changes. I built a local speech-to-text service using #Quarkus and whisper.cpp. Everything runs in-process. Everything is explicit. Feels like an important shift for #Java. buff.ly/McUa4m1

JetBrains Air, a new agentic dev IDE based on the Fleet tech - air.dev 👀

After working on ZGC for a decade, I’m happy to announce that I’m publishing a book about ZGC in JDK 25. It ships 22 May (www.taylorfrancis.com/books/mono/1...) and is being published by Taylor & Francis. You should get a copy if you want to learn more about ZGC. It’s available for pre-order now.

Type classes prototype for #java 🤯 - mail.openjdk.org/pipermail/va...

Actually, OpenJDK 25 is 18% faster than OpenJDK 17 and 21 and a whopping 84% faster than OpenJDK 11. Upgrade now!

I hope I'm not the only one who sometimes wonders: "What is my Java application doing right now?" When you don't see any output. This is where my tiny tool called JStall comes in, as you can read in my blog post at mostlynerdless.de/blog/2025/12...

Kotlin compiler plugins are amazing! ✅ Expressive syntax ✅ Compile-time checked ✅ Fast at runtime

Spring Boot 4 finally has a dedicated OpenTelemetry starter. No more pulling in actuator just for observability. Metrics, traces, and logs via OTLP out of the box. youtu.be/6_Y41z7OIv8

exoquery.com/blog/introdu... #kotlin #exoquery

Kotlin 2.3.0 is out! Check out the highlights of this release on the Kotlin blog. 👉 https://kotl.in/trf88y

Deep Dive in Java vs C++ Performance - johnnysswlab.com/deep-dive-in... #jvm

github.com/roastedroot/... - a pure #Java Protobuf library. It works by compiling protoc → WASM → JVM bytecode via Chicory, a fantastic WASM runtime for the #JVM.

👇ICYMI: In my new blog post I'm diving into the fundamentals of Durable Execution, which makes multi-step workflows, defined in code, persistent and resumable. Featuring #SQLite as an execution log as well as some of the goodies of modern #Java, such as virtual threads and scoped variables.

You know that Result::unwrap() from #Rust that just crashed Cloudflare? It wouldn't have happened on the JVM / #Java because its exceptions typically get caught. Just saying 🤷‍♂️

Looks like the @kotlinlang.org Amper build tool doc (dev version) is now available: jetbrains.github.io/amper/dev/ #kotlin #amper #jvm

Integrated ”JEP 516: Ahead-of-Time Object Caching with Any GC”! openjdk.org/jeps/516

KGP 2.2.20 has builtin support for generating and uploading GPG keys 🎉 I still remember when I had to do this 6 years ago. That was not fun. Very excited to see more tools for library authors! kotlinlang.org/docs/whatsne...

@vergauwensimon.bsky.social @kotlinlang.org I think the Ktor custom plugin doc need some refactorings - ktor.io/docs/server-.... We can now supply the config from file easily using the new config deserialization support and can make the config a lot simpler.

Compose UI in JetBrains IDE plugins next year confirmed #kotlin

Finding Order in the Mayhem: A Novel Concurrency Testing Tool that Improved the Kotlin Compiler https://lobste.rs/s/xkziyp ##testing ##kotlin

inside.java/2025/10/27/t... #jvm #java

This discussion on how Kotlin should expose time zone data is super thoughtful. Whatever the outcome I sure appreciate the process.

Most AI Agents are bleeding B.S.! And I meant bleeding Balance Sheets 💸 Economics doesn’t add up. Quality drops. Let’s focus on building better systems, not flashy demos! medium.com/@vadim.brili... #ai #aigents #genai #aieconomics #java #python #kotlin #llm #openai #claude #scalability #backend

Get your hands on the latest Project #Valhalla Early-Access Build, featuring Value Classes and Objects 🪓 #JDK26 #Java 👉 jdk.java.net/valhalla/

Need a handy list of the useful security enhancements in JDK 25? Look no further. https://social.ora.cl/6011AwAzz

There's still a bit of work to do, but I've just pushed out a release of my text to speech library with a new phonemizer and initial support for non-english languages. github.com/hcoles/voices #java

#JUnit 6.0.0 is released! ✨ Java 17 and Kotlin 2.2 baseline 🌄 JSpecify nullability annotations 🛫 Integrated JFR support 🚟 Kotlin suspend function support 🛑 Support for cancelling test execution ⏭️ New `--fail-fast` mode for ConsoleLauncher 🧹 Removal of deprecated APIs docs.junit.org/6.0.0/releas...

Some interesting @graalvm.org #native-image changes - "We are working on turning the native image generator into a native image itself and in this way completely disentangling it from the HotSpot VM. Together with Project Crema ..." - github.com/oracle/graal...

#jvm #leyden

🎉 The Ktor @opentelemetry.io integration doc is now live - ktor.io/docs/server-... #kotlin #otel

The Ktor roadmap for 2025–26 is here! Here's what we'll be working on: 🔶 API docs (OpenAPI is already in preview) 🔶 WebRTC Client with a Multiplatform API 🔶 Integration with Koog, the @jetbrains.com framework for building AI agents Explore what’s next 👇 blog.jetbrains.com/kotlin/2025/...

Java 25 / JDK 25: Features since the previous long-term support (LTS) release: openjdk.org/projects/jdk... #Java25 #JDK25 #OpenJDK #Java

Awesome... JEP 517: HTTP/3 for the HTTP Client API has merged into the #JDK mainline - github.com/openjdk/jdk/...

📢 Kotlin DataFrame 1.0.0-Beta3 is out! This update brings Parquet and DuckDB support, better compile-time schema tracking via the Compiler Plugin, and a big refresh of docs and examples. Read the full release notes 👇 kotl.in/w2eq2c?utm_c...

Finally, it's happening #jvm #java #valhalla

They said Kotlin isn’t for AI. We rewrote our platform anyway. Now there’s Koog — a JVM-native AI framework for production. 🔥 Drama, lessons learned, and why nobody wants to touch Python anymore: medium.com/@vadim.brili... #AI #AIAgents #Python #Kotlin #Koog #Java #SoftwareEngineering #OpenSource

If for some reason you haven’t seen it yet, we released Koog — one of the most advanced frameworks for building AI agents! Targeting unmatched range of platforms: JVM backend, Android, iOS, JS, and WebAssembly #ai #java #kotlin #genai #llm #openai #android #ios #js github.com/JetBrains/koog

With Kotlin 2.2, a new default rule makes annotations land where you expect them to, reducing boilerplate and aligning with how frameworks handle annotations. 👀 IDEA helps to catch that with in-editor warnings and quick fixes 👇 jb.gg/1bptcn

🎯 JEP 517 proposed to target JDK 26 Title: HTTP/3 for the HTTP Client API Type: feature Component: core / net Release: 26 See openjdk.org/jeps/517