Foojay Podcast #57: Welcome to OpenJDK (Java) 23
- September 16, 2024
- 4459 Unique Views
- < 1 min read
OpenJDK (Java) 23 is (almost) here!
OpenJDK 23 introduces three new features to the language and runtime and many bug fixes, small improvements, and a longer list of preview features.
What are the most important facts about this release? Let's find out...
Video
Podcast (Audio Only)
Guests
Simon Ritter
- https://www.linkedin.com/in/siritter/
- https://mastodon.social/@speakjava
- https://twitter.com/speakjava
Artur Skowroński
Content
00:00 Introduction
00:49 What OpenJDK version are we on?
Foojay post by Loic Mathieu: https://foojay.io/today/java-23-whats-new/
01:26 Why switch to OpenJDK 23?
02:45 JEP 467: Markdown Documentation Comments
04:15 JEP 474: ZGC: Generational Mode by Default
https://www.azul.com/blog/what-should-i-know-about-garbage-collection-as-a-java-developer/
https://newrelic.com/resources/report/2024-state-of-the-java-ecosystem
14:17 JEP 471: Deprecate the Memory-Access Methods in sun.misc.Unsafe for Removal
Foojay post by Bazlur Rahman: https://foojay.io/today/unsafe-is-finally-going-away-embracing-safer-memory-access-with-jep-471/
22:04 Preview and incubator features
22:31 JEP 466: Class-File API (Second Preview)
25:48 JEP 455: Primitive Types in Patterns, instanceof, and switch (Preview)
https://openjdk.org/projects/valhalla
30:52 JEPs leading to cleaner code
https://openjdk.org/projects/amber
32:28 469 vector
35:28 JEP 473: Stream Gatherers (Second Preview)
38:07 JEP 476: Module Import Declarations (Preview)
Overview of projects with modules: https://docs.google.com/spreadsheets/u/2/d/e/2PACX-1vQbHhKXpM1_Vop5X4-WNjq_qkhFRIOp7poAF79T0PAjaQUgfuRFRjSOMvki3AeypL1pYR50Rxj1KzzK/pubhtml
43:03 JEP 477: Implicitly Declared Classes and Instance Main Methods (Third Preview)
45:40 JEP 480: Structured Concurrency (Third Preview)
46:26 JEP 481: Scoped Values (Third Preview)
46:40 JEP 482: Flexible Constructor Bodies (Second Preview)
48:56 Removal of String templates
https://openjdk.org/jeps/430 (OpenJDK 21): String Templates (Preview)
https://openjdk.org/jeps/459 (OpenJDK 22): String Templates (Second Preview)
Nice description on the mailing list: https://mail.openjdk.org/pipermail/amber-spec-experts/2024-March/004010.html
53:21 Process of releases
55:25 Predictions for next LTS 25
57:48 License changes for Oracle JDK 17
58:38 About JVM Weekly by Artur (and Scala, AI, LLMs)
JVM Weekly Newsletter: https://www.linkedin.com/newsletters/7097859802881540096/
https://webtechie.be/tags/jfx-in-action
1:06:18 Conclusions
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Frank Delporte (@frankdelporte) is a Java Champion, Java Developer, Technical Writer at Azul, Blogger, Author of "Getting started with Java on Raspberry Pi", and Pi4J Contributor. Frank blogs about his experiments with Java, sometimes combined with electronic components, on the Raspberry Pi.
Simon is Deputy CTO at Azul.
Comments (1)
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