Java News

Episode 64 “JIT Compiler From the Ground Up” [AtA]

By Nicolai Parlog on July 30, 2026

An introduction to key concepts of just-in-time compilation: speculation and traps, inlining and constant folding, escape analysis and scalar replacement, and more

Under the HAT: Empowering GPU Acceleration for Java

By Juan Fumero on July 30, 2026

Explore the latest work on the HotSpot JVM, with a focus on auto-vectorization and the Vector API.

Newsletter: JDK 27 Rampdown Phase is Closing - Default G1 in All Environments

By David Delabassee on July 29, 2026

OpenJDK Quality Outreach July 2026 Newsletter

Quality Outreach Heads-up - JDK 28: jlink cacerts plugin

By Billy Korando on July 28, 2026

This Heads-Up is part of the regular communication sent to the projects involved; it covers a new plugin being added to the `jlink` command-line tool for adding cacerts.

Pairing In-Process and Hosted Embeddings for Java MCP Tool Development

By Ana-Maria Mihalceanu on July 25, 2026

Discover why a Java MCP tool can benefit from both in-process and hosted embeddings: in-process embeddings keep development, testing, and conformance fast and reliable, while external provider-backed embeddings offer production-quality semantic scoring behind the same stable tool contract.

Episode 63 “AI Solutions with Spring AI 2.0” [I/O]

By Lize Raes on July 23, 2026

Tips on deterministic agents, MCP servers and skills, prompt engineering, and where Java's richness for AI solutions stems from.

Quality Outreach Heads-up - JDK 27: Default G1 in All Environments

By Nicolai Parlog on July 20, 2026

This Heads-Up is part of the regular communication sent to the projects involved; it covers G1 becoming HotSpot's default GC in all environments.

Episode 62 “JDK 27 + Valhalla, Now! + Hackathon” [IJN]

By Nicolai Parlog on July 19, 2026

JDK 27 entered RDP1, Valhalla's JEP 401 is being merged into JDK main, join our hackathon, and more

Java - The Documentary

By on July 18, 2026

From its humble beginnings as a project code-named "Oak" at Sun Microsystems to becoming a global standard for enterprise software and billions of devices, Java's journey is one of radical innovation, strategic pivots, and enduring community strength.

Identifying JDK Value Class Candidates

By Dan Smith on July 16, 2026

As long as value classes are a preview feature, they can’t generally be adopted in the JDK libraries (which are not compiled with `--enable-preview`). However, we felt it was important for this JEP to provide users with a “starter kit” of some value classes out of the box, and to ease into any migration challenges for popular classes, so we identified a handful of JDK classes that the JEP can treat as value classes when preview features are enabled.

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