From Java 11 to 21
From Java 11 to 21
About the Bundle
If you are currently using Java 11, this bundle can help you upgrade to the latest Java LTS version 21.
About the Books
From Java 11 to Java 17
Upgrade to Java 17 from Java 11
Java 21 is released. Check out my new book From Java 17 to 21 to upgrade to Java 21.
Java 17 is a LTS version of Java. Java 17 should be the next version to upgrade if you are using Java 8 or Java 11. It is expected that users of Java 8 and 11 will gradually migrate to Java 17. Spring 6 is released with requirement of JDK 17+. You must upgrade to Java 17 to use Spring 6.
This book covers major changes from Java 11 to Java 17, including Java 12, 13, 14, 15, 16 and 17. Below is a list of these features:
- Records
- Sealed classes
- Switch expressions
- Pattern matching
- Text blocks
- JFR event streaming, JVM constants API, hidden classes
- Changes to Java standard libraries
- New garbage collectors
- Changes to JVM
- Packaging tool - jpackage
- Foreign function & memory API
- Other changes
If you are using Java 11 and planning to upgrade to Java 17, this book can provide you with a valuable reference.
From Java 17 to Java 21
Upgrade to Java 21 from Java 17
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.
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