[{"_1":2,"_42":-5,"_43":-5},"loaderData",{"_3":4,"_10":11,"_40":-5,"_41":-5},"root",{"_5":-5,"_6":-5,"_7":-5,"_8":9},"user","shoppingCartId","toast","locale","en","routes/_store+/_readers+/email_author.$slug/route",{"_12":13,"_39":-5},"book",{"_14":15,"_16":17,"_18":19,"_20":21,"_22":23,"_24":25},"id","Z2lkOi8vbGVhbnB1Yi9TdG9yZTo6Qm9va1Byb2R1Y3QvNTM5NzQ","title","From Java 17 to Java 21","state","published","contactAuthorMethod","email","aboutText","

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 \t

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.

","authors",[26],{"_14":27,"_28":29,"_5":30},"Z2lkOi8vbGVhbnB1Yi9TdG9yZTo6UHJvZHVjdEF1dGhvci81Njk0Mw","name","Fu Cheng",{"_31":32},"avatar",{"_33":34,"_35":36,"_37":38},"url","https://d308did4coypzi.cloudfront.net/avatars/301829/medium/profile-new.JPG?1653309511","styleName","medium","exists",true,"currentUser","routes/_store+/_layout","routes/_store+/_readers+/_layout","actionData","errors"]

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