Java Development Kit for Mac

What's new in this version:

Prepare to Make Final Mean Final:
- Issue warnings about uses of deep reflection to mutate final fields. These warnings aim to prepare developers for a future release that ensures integrity by default by restricting final field mutation, which will make Java programs safer and potentially faster. Application developers can avoid both current warnings and future restrictions by selectively enabling the ability to mutate final fields where essential.

Remove the Applet API:
- Remove the Applet API, which was deprecated for removal in JDK 17 (2021). It is obsolete because neither recent JDK releases nor current web browsers support applets.
- Ahead-of-Time Object Caching with Any GC:
- Enhance the ahead-of-time cache, which enables the HotSpot Java Virtual Machine to improve startup and warmup time, so that it can be used with any garbage collector, including the low-latency Z Garbage Collector (ZGC). Achieve this by making it possible to load cached Java objects sequentially into memory from a neutral, GC-agnostic format, rather than map them directly into memory in a GC-specific format.

HTTP/3 for the HTTP Client API:
- Update the HTTP Client API to support the HTTP/3 protocol, so that libraries and applications can interact with HTTP/3 servers with minimal code change.

G1 GC: Improve Throughput by Reducing Synchronization:
- Increase application throughput when using the G1 garbage collector by reducing the amount of synchronization required between application threads and GC threads.

PEM Encodings of Cryptographic Objects (Second Preview):
- Introduce an API for encoding objects that represent cryptographic keys, certificates, and certificate revocation lists into the widely-used Privacy-Enhanced Mail (PEM) transport format, and for decoding from that format back into objects. This is a preview API.

Structured Concurrency (Sixth Preview):
- Simplify concurrent programming by introducing an API for structured concurrency. Structured concurrency treats groups of related tasks running in different threads as single units of work, thereby streamlining error handling and cancellation, improving reliability, and enhancing observability. This is a preview API.

Lazy Constants (Second Preview):
- Introduce an API for lazy constants, which are objects that hold unmodifiable data. Lazy constants are treated as true constants by the JVM, enabling the same performance optimizations that are enabled by declaring a field final. Compared to final fields, however, lazy constants offer greater flexibility as to the timing of their initialization. This is a preview API.

Vector API (Eleventh Incubator):
- Introduce an API to express vector computations that reliably compile at runtime to optimal vector instructions on supported CPUs, thus achieving performance superior to equivalent scalar computations.

Primitive Types in Patterns, instanceof, and switch (Fourth Preview):
- Enhance pattern matching by allowing primitive types in all pattern contexts, and extend instanceof and switch to work with all primitive types. This is a preview language feature.