Java

Since JavaOne 2025, JDK 25 was released, the latest version with long-term support. But Java never stands still; it's already time to ship JDK 26. This talk summarizes the most important changes between Java 21 and 25:

- from unnamed patterns and flexible constructors to module imports
- from the foreign-function and memory API to stream gatherers and the class-file API
- from a simpler `main` to launching multisource-file programs
- from Markdown in JavaDoc to quantum-resistant encryption
- from faster launch times to improved garbage collection

... before taking a closer look at the newest release, including its preview features:

- Primitive patterns and lazy constants
- Updated structured concurrency
- PEM encoding and HTTP/3 support
- New command-line options to enable deep reflection

There are plenty of features in the language, API, and runtime to discuss; whether new, improved, or finalized. Let's go over them.

Presented by Nicolai Parlog (Oracle) at JavaOne 2026 (CA, March 2026).

All https://www.youtube.com/playlist?list=PLX8CzqL3ArzUMVSzm-z_-if8BIB55EGl4 talks.


Tags: #Java #JavaOne #JVM #JDK 

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Java 26: Better Language, Better APIs, Better Runtime

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