From Java 21 to Java 25

Introduction

1. JEPs in Different Java Releases
2. Install Java 25
3. Build Tools
4. Source Code
5. Java Language

Module Import Declarations

1. Module Import Declaration
2. Import Ambiguity
3. Choose Import Declaration

Flexible Constructor Bodies

Compact Source Files and Instance Main Methods

1. Instance main methods
2. Compact Source Files
3. IO

Pattern Matching

1. Unnamed Variables & Patterns
2. Primitive Types in Patterns, instanceof, and switch
3. Core Library

Stream Gatherers

Class-File API

1. ClassFile
2. Models
3. Builders
4. Transform
5. Parse
6. Generate
7. Transform

Integrity by Default

1. Prepare to Restrict the Use of JNI
2. Warn upon Use of Memory-Access Methods in sun.misc.Unsafe

Security

1. Permanently Disable the Security Manager
2. Multi-threading

Scoped Values

1. Thread Local
2. ScopedValue

Structured Concurrency

1. Basic Usage
2. Joiner
3. Configuration
4. Open a StructuredTaskScope
5. Exception Handling
6. A Concrete Example
7. Joiner.allSuccessfulOrThrow
8. Joiner.anySuccessfulResultOrThrow
9. Close of StructuredTaskScope

Synchronize Virtual Threads without Pinning

Stable Values

1. StableValue
2. Stable Supplier
3. Stable IntFunction
4. Stable Function
5. Stable List
6. Stable Map
7. Constant Folding Optimization
8. Use StableValue
9. JVM

JFR

1. Method Timing and Tracing
2. CPU-Time Profiling

Garbage Collectors

1. G1
2. ZGC
3. Generational Shenandoah

Compact Object Headers

Project Leyden

1. Class Loading & Linking
2. Method Profiling
3. Tools

Launch Multi-File Source-Code Programs

Linking Run-Time Images without JMODs

Annotations Processing

1. Deprecated & Removed Features

32-bit x86 Port