OpenJDK Early Access Java Development Kit

The OpenJDK Early Access Java Development Kit provides developers with pre‑release builds of the upcoming Java platform. It includes JDK 27, JavaFX 27, JavaFX Direct3D 12, and experimental tools such as Jextract, Leyden, Loom, and Valhalla, alongside the stable production releases of JDK 26, JavaFX 26, and JMC 9.1.2. These packages are distributed by Oracle and are intended for macOS environments, allowing developers to experiment with new language and runtime features before they become generally available.

Targeted at Java programmers and teams that need to evaluate forthcoming language enhancements, the kit offers a way to test early‑stage implementations of concurrency (Loom), value‑type (Valhalla), and other experimental APIs. It also bundles reference implementations for recent Java SE releases, ensuring compatibility testing across versions from Java 7 through Java 26.

What sets this kit apart is its combination of production‑ready releases with a curated set of early‑access components, giving developers a single source for both stable development and previewing future Java capabilities.