Foojay Podcast #45: Welcome to Java 22

Last September, we got Java 21, a Long Term Support (LTS) version with eight new big features and seven incubator or preview features.

Does Java 22 also bring that much innovation, or is it just a bug-fix release?

And what needs to be done to get such a release published on time? Let’s find out…

Video

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Speakers

Loïc Mathieu

• https://foojay.io/today/java-22-whats-new/
• https://www.linkedin.com/in/lo%C3%AFc-mathieu-475b144/
• https://www.loicmathieu.fr/wordpress/en/
• https://mastodon.online/@loicmathieu
• https://twitter.com/loicmathieu
• https://kestra.io/

Simon Ritter

• https://www.linkedin.com/in/siritter/
• https://mastodon.social/@speakjava
• https://twitter.com/speakjava
• https://www.azul.com/

Podcast Host: Frank Delporte

• https://foojay.social/@frankdelporte
• https://www.linkedin.com/in/frankdelporte/

Content

00:00 Introduction of the topic and guests

00:52 Highlights of Java 22

01:43 How the 6-month release cycle is achieved

04:14 How to follow changes in OpenJDK

• https://mail.openjdk.org/mailman/listinfo/jdk-updates-dev
• https://mail.openjdk.org/mailman/listinfo/amber-dev
• https://mail.openjdk.org/mailman/listinfo/jdk-dev
• All mailing lists: https://mail.openjdk.org/mailman/listinfo/

07:43 New features (JEPs) in Java 22

• https://openjdk.org/projects/jdk/22/
• https://jdk.java.net/22/
• https://openjdk.org/jeps/0

08:33 JEP 423: Region Pinning for G1

• https://openjdk.org/jeps/423
• https://foojay.io/today/what-should-i-know-about-garbage-collection-as-a-java-developer/

10:37 JEP 454: Foreign Function & Memory API

• https://openjdk.org/jeps/454
• https://openjdk.org/projects/panama/

15:43 JEP 456: Unnamed Variables & Patterns

• https://openjdk.org/jeps/456

20:33 JEP 458: Launch Multi-File Source-Code Programs

• https://openjdk.org/jeps/458
• https://foojay.io/today/foojay-podcast-28/
• https://www.jbang.dev/

24:15 Incubator and preview features

25:00 JEP 461: Stream Gatherers (Preview)

• https://openjdk.org/jeps/461

28:53 JEP 447: Statements before super(…) (Preview)

• https://openjdk.org/jeps/447

32:02 JEP 460: Vector API (Seventh Incubator)

• https://openjdk.org/jeps/460

35:29 Difference between incubator and preview feature

• https://openjdk.org/jeps/11
• https://openjdk.org/jeps/12

36:53 Who decides what will be in Java 23?

• https://jdk.java.net/23/
• JEP 455: Primitive Types in Patterns, instanceof, and switch (Preview)
• https://openjdk.org/jeps/455

37:28 JEPs grouped per project

• Project Amber, https://openjdk.org/projects/amber/ - JEPs 463, 459, 456, 447
• Project Loom, https://openjdk.org/projects/loom/ - JEPs 464, 462
• Project Panama, https://openjdk.org/projects/panama/ - JEPs 460, 454

38:47 How Loïc creates his blog posts about new Java features

• https://www.loicmathieu.fr/wordpress/en/informatique/java-22-quoi-de-neuf/
• https://javaalmanac.io/

41:54 Over 3000 Jira issues handled in Java 22

42:32 Should we update all our production runtimes?

47:10 JEP 463: Implicitly Declared Classes and Instance Main Methods (Second Preview)

• https://openjdk.org/jeps/463

49:38 JEP 462: Structured Concurrency (Second Preview)

• https://openjdk.org/jeps/462

52:10 Conclusion

Music

• Barbershop John
• Hermine Deurloo
• Synapse by Shane Ivers - https://www.silvermansound.com