From Java 21 to Java 25 : Upgrade to Java 25 from Java 21

Features and changes from Java 21 to Java 25.

Java 25 New Features from Java 21

Java Language

Module Import Declarations
Flexible Constructor Bodies
Compact Source Files and Instance Main Methods
Pattern Matching
Core Library

Stream Gatherers
Class-File API
Integrity by Default
Multi-threading

Scoped Values
Structured Concurrency
Synchronize Virtual Threads without Pinning
Stable Values
JVM

Garbage Collectors
Compact Object Headers
Project Leyden
Tools

Launch Multi-File Source-Code Programs
Annotations Processing