From Java 17 to Java 21
From Java 17 to Java 21
Upgrade to Java 21 from Java 17
About the Book
Upgrade to Java 21 to use virtual threads.
Changes from Java 17 LTS to Java 21 LTS, including updates in Java 18, 19, 20 and 21.
Content included in the book:
- Pattern matching
- Record patterns
- Pattern matching for switch
- Unnamed patterns and variables
- Multi-threading
- Virtual threads
- Structured concurrency
- Scoped values
- Standard library changes
- UTF-8 by default
- Internet-address resolution SPI
- Simple web server
- Sequenced collections
- Key Encapsulation Mechanism API
- Java languages
- String templates
- Code snippets in Java API documentation
- Unnamed classes and instance main methods
- Panama project
- Foreign Function & Memory API
- Vector API
If you are currently using Java 11 LTS, check out another book From Java 11 to 17.
About the Author
Bundles that include this book
Table of Contents
- Introduction
- JEPs in Different Java Releases
- Java 18
- Java 19
- Java 20
- Java 21
- Install Java 21
- Build Tools
- Source Code
- JEPs in Different Java Releases
- Java Language
- String Templates
- Template Expressions
- String Template
- Template Processor
- SMS Message Template
- Format Processor
- Unnamed Classes and Instance Main Methods
- Java Program Launch Protocol
- Unnamed Classes
- Code Snippets in Java API Documentation
- Inline Snippets
- External Snippets
- Markup Tags
- Tag References
- String Templates
- Pattern Matching
- Record Patterns
- Nested Record Patterns
- Generic Record Types
- Pattern Matching for
switchnullinswitch
- Guarded Case Label
- Enum Constants in
switch
- Unnamed Patterns and Variables
- Unnamed Patterns
- Unnamed Variables
- Record Patterns
- Standard Library
- UTF-8 By Default
- Internet-Address Resolution SPI
- Simple Web Server
- Sequenced Collections
SequencedCollection
SequencedSet
SequencedMap
- Classes Hierarchy
- Reimplement Core Reflection with Method Handles
- Key Encapsulation Mechanism API
- Multi-threading
- Virtual Threads
- Create Virtual Threads
- Virtual Threads Basics
- Thread-local Variables
- Scheduling of Virtual Threads
- Execution of Virtual Threads
ExecutorService
- Debugging
- Structured Concurrency
- Basic Usage
invokeAll
invokeAny
- Shutdown and Close of StructuredTaskScope
- Scoped Values
- Virtual Threads
- Project Panama
- Foreign Function & Memory API
- Foreign Memory
- Memory Segments
- Arenas
- Dereferencing Memory Segments
- Memory Layouts
- Dereferencing Memory Layouts
- More About Arenas
- Foreign Functions
- Vector API
- API Basics
- Euclidean Distance Calculation
- Foreign Function & Memory API
- JVM
- Generational ZGC
- Prepare to Disallow the Dynamic Loading of Agents
- Deprecated & Removed Features
- Deprecated Features
- Finalization
- Windows 32-bit x86 Port
- Deprecated Features
- Miscellaneous
- Linux/RISC-V Port
- Annotation Processing
- Introduction
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