Introduction to Java 22

Java 22 brings updates to the Java language, including unnamed variables and patterns, statements before super(), string templates, and implicitly declared classes and instance main methods. It also introduces new libraries such as the Foreign Function and Memory API, Class File API, Stream Gatherers, Structured Concurrency API, Scoped Values, Vector API, and updates to tooling, such as multi-file source programs. Additionally, there are performance enhancements in the G1 Garbage Collector with region pinning.