JVM Helper Agent

What's New

Java 25 LTS (Sep 2025): Next LTS after 21. Finalizes: Scoped Values, Module Import Declarations, Compact Source Files / Instance Main Methods, Flexible Constructor Bodies, Compact Object Headers, Generational Shenandoah. Previews: Structured Concurrency (5th), Primitive Types in Patterns (3rd), Stable Values, PEM Encodings
Java 24 (Mar 2025): 24 JEPs. Finalizes Stream Gatherers, Class-File API. Previews: Flexible Constructor Bodies (3rd), Primitive Types in Patterns (2nd). Deprecates 32-bit x86 port
Java 23 (Sep 2024): Primitive Types in Patterns preview, Module Import Declarations preview, Implicitly Declared Classes (3rd preview). Removes String Templates (design issues). Introduces Oracle GraalVM JIT as JDK option
Java 22 (Mar 2024): 12 JEPs. Finalizes Foreign Function & Memory API (JEP 454), Unnamed Variables & Patterns (JEP 456). Previews: Statements before super(), Implicitly Declared Classes (2nd)
Java 21 LTS (Sep 2023): 15 JEPs. Finalizes Virtual Threads (JEP 444), Record Patterns (JEP 440), Pattern Matching for switch (JEP 441), Sequenced Collections (JEP 431). Previews: String Templates, Structured Concurrency, Scoped Values, Unnamed Patterns

Kotlin 2.1 (Nov 2024): Guard conditions in when expressions, basic Swift export support, stable Gradle DSL for compiler options, K2 kapt enabled by default (2.1.20), Lombok @SuperBuilder support
Kotlin 2.0 (May 2024): Stable K2 compiler - 2x faster compilation on average (initialization up to 488% faster, analysis up to 376% faster). Unified pipeline for all backends (JVM, JS, Wasm, Native). Improved smart casts, redesigned multiplatform compilation scheme