[Java 22] What's new in Java 22

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Language Improvements:

• Unnamed variables and patterns (JEP 456)
• Statements before super (preview, JEP 447)
• String templates (second preview, JEP 459)
• Implicitly declared classes and instance main methods (second preview, JEP 463)

Libraries:

• Foreign function and memory API (JEP 454)
• Class-file API (preview, JEP 457)
• Stream gatherers (preview, JEP 461)
• Structured concurrency (second preview, JEP 462)
• Scoped values (second preview, JEP 464)
• Vector API (seventh incubator, JEP 460)

Performance:

• Regional pinning for G1 (JEP 423)

Tooling:

• Launch multi-file source-code programs (JEP 458)

Other updates:

• Deprecation of obsolete APIs and removal of previously deprecated ones
• Addition of new algorithms to keytool and jarsigner
• Garbage collector throughput improvements
• Better version reporting for system module descriptors
• Improved "wait" handling options for native code
• Unicode Common Locale Data Repository updated to version 44
• Type annotations support for types loaded from bytecode
• ForkJoinPool and ForkJoinTasks can now better handle uninterruptible tasks
• Additional flexibility for configuring client versus server TLS connection properties
• Improved native memory tracking, including the ability to report peak usage

List of JEPs:

423:	Region Pinning for G1
447:	Statements before super(...) (Preview)
454:	Foreign Function & Memory API
456:	Unnamed Variables & Patterns
457:	Class-File API (Preview)
458:	Launch Multi-File Source-Code Programs
459:	String Templates (Second Preview)
460:	Vector API (Seventh Incubator)
461:	Stream Gatherers (Preview)
462:	Structured Concurrency (Second Preview)
463:	Implicitly Declared Classes and Instance Main Methods (Second Preview)
464:	Scoped Values (Second Preview)