Hello, It's AmigosKazz 😃👋

In this repo I want to talk about "Evolution of Java from Java 8 to Java 22" 🚀🚀

Official Java Documentation

JDK 8 (2014):

Java SE 8

• Lambda expressions.
• Streams API.
• Default methods in interfaces.
• Functional Interfaces.
• Date and Time API (java.time).
• Nashorn JavaScript engine.
• PermGen removed, replaced by Metaspace.
• Parallel Array Sorting.
• Type Annotations.
• Method References.

JDK 9 (2017):

Java SE 9

• JShell (Java REPL).
• Modules (Jigsaw Project).
• Reactive Streams API.
• Enhanced Process API.
• HTTP/2 Client.
• Improved Garbage Collector.
• Private Methods in Interfaces.
• Try-With-Resources Enhancements.

JDK 10 (2018):

Java SE 10

• Local-variable type inference (var keyword).
• Application class-data sharing.
• Parallel Full GC for G1.
• Experimental JIT compiler.
• Remove the javah tool.

JDK 11 (2018):

Java SE 11

• Flight Recorder.
• HTTP Client (Standard).
• Epsilon Garbage Collector.
• Local-variable syntax for lambda parameters.
• Remove Java EE and CORBA modules.
• Remove Thread.destroy() and Thread.stop(Throwable).

JDK 12 (2019):

Java SE 12

• Switch Expressions.
• Shenandoah Garbage Collector.
• Microbenchmark Suite (JMH).

JDK 13 (2019):

Java SE 13

• Text Blocks.
• Dynamic CDS Archives.
• ZGC Garbage Collector.

JDK 14 (2020):

Java SE 14

• Records (Preview).
• Pattern Matching for instanceof (Preview).
• Non-Volatile Mapped Byte Buffers.
• Helpful NullPointerExceptions.

JDK 15 (2020):

Java SE 15

• Sealed Classes (Preview).
• Hidden Classes.
• Unix-Domain Socket Channels.

JDK 16 (2021):

Java SE 16

• Records (Final).
• Pattern Matching for instanceof (Final).
• Unix-Domain Socket Channels.

JDK 17 (2021):

Java SE 17

• Sealed Classes and Interfaces (Second Preview).
• Pattern Matching for switch (Second Preview).
• New macOS rendering pipeline.

JDK 18 (2022):

Java SE 18

• Records (Second Preview).
• Pattern Matching for instanceof (Second Preview).
• Enhanced Volatile.
• Vector API (Incubator).

JDK 19 (2023):

Java SE 19

• Project Loom (Fibers).
• Foreign Function and Memory API (Incubator).
• Strong encapsulation for JDK internals.

JDK 20 (2023):

Java SE 20

• Record Patterns (Second Preview).
• Foreign Function & Memory API (Second Preview).
• Scoped Values (Incubator).

JDK 21 (2023):

Java SE 21

• Virtual Threads for lightweight concurrency.
• Record Patterns for enhanced data manipulation.
• Pattern Matching for switch statements for concise code structures.
• SequencedCollection for direct access to ordered collection's elements.
• Preview features including String templates, unnamed classes, and instance main() methods.
• Continuation of Scoped values as a preview API.
• Unnamed Patterns and Variables as preview features.
• Unnamed Classes and Instance Main Methods as preview features.
• Structured Concurrency remains a preview feature.
• Unnamed Patterns and Variables (Preview)

JDK 22 (2024):

Java SE 22

• Region Pinning for G1 Garbage Collector.
• Foreign Function & Memory API for improved native interoperability.
• Unnamed Variables & Patterns for more flexible coding structures.
• Launch Multi-File Source-Code Programs for streamlined program execution.

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By AmigosKazz