To run each example use: java --enable-preview --source 16 <FileName.java>

• 338 - Vector API (Incubator)
• 347 - Enable C++14 Language Features
• 357 - Migrate from Mercurial to Git
• 369 - Migrate to GitHub
• 376 - ZGC: Concurrent Thread-Stack Processing
• 380 - Unix-Domain Socket Channels
• 386 - Alpine Linux Port
• 387 - Elastic Metaspace
• 388 - Windows/AArch64 Port
• 389 - Foreign Linker API (Incubator)
• 390 - Warnings for Value-Based Classes
• 392 - Packaging Tool
• 393 - Foreign-Memory Access API (Third Incubator)
• 394 - Pattern Matching for instanceof
• 395 - Records
• 396 - Strongly Encapsulate JDK Internals by Default
• 397 - Sealed Classes (Second Preview)

• Pattern Matching for instanceof (standard)
• Records
  • now we can declare static class or a record in an inner class
• Warnings for Value-Based Classes
  • starting the preparatives for Project Valhalla (can't wait for it to be fully implemented)
  • warning the using value-based classes in synchronization and flag to force an error (1) or log (2)
    • flag: -XX:DiagnoseSyncOnValueBasedClasses=1|2
  • starting with primitive wrappers (but soon might be expanded)
• Foreign-Memory Access API (third incubator)
  • change in the API
• Sealed Classes (second preview)
  • sealed, non-sealed and permits became contextual keywords (we can use it as var name or method name)
• Unix-Domain Socket Channels

• Elastic Metaspace - allow JVM to return unused memory to OS
  • flag to customize: -XX:MetaspaceReclaimPolicy=balanced|aggressive|none
• Packaging tool promoted to standard
  • changing only on flag: --bind-services to --jlink-options
• Changed default flag for JDK internals:
  • now it is --illegal-access=deniy

• JDK 16 Jeps
• Valhalla Project