Before we dive into what’s new with wrapper classes in Java 21, let’s do a quick review. Wrapper behavior was also refined as groundwork for Project Valhalla’s value types. Wrapper classes in Java 21 ...

Project Valhalla's JEP 401 will bring value classes to JDK 28, removing object identity from Java types in a 197,000-line change twelve years in the making ...

Learn how to use pattern-matching features in your Java programs, including pattern matching with switch statements, when clauses, sealed classes, and a preview of primitive type pattern matching in ...

Don't hold your breath, though – architect Brian Goetz warns devs it will likely still be preview in next LTS release ...