Foojay Podcast #68: Welcome to OpenJDK (Java) 24
- March 17, 2025
- 537 Unique Views
- 2 min read
We serve you a podcast about the new Java version every six months.
Our regular guest, Simon Ritter, Deputy CTO of Azul, is known on social media as "speakjava." He is part of the OpenJDK vulnerability group, JCP executive committee, and expert group for the Java SE specification request so that he can share a lot of inside information with us.
In this episode, we are joined by Hanno Embregts, a Java Developer by day and musician by night. He publishes a post on Foojay with all the details of every new Java release and prepared a long description of all the new features included in Java 24.
Let's see what this new release brings us...
Video
Podcast (audio only)
Guests
Simon Ritter
Hanno Embregts
Content
00:00 Introduction of the topic and guests
00:58 Why 24 JEPs in release 24?
02:16 Overview of the changes in Java 24
03:37 The changes in Hotspot and GC
JEP 404: Generational Shenandoah (Experimental)
JEP 450: Compact Object Headers (Experimental)
JEP 475: Late Barrier Expansion for G1
04:46 JEP 483: Ahead-of-Time Class Loading & Linking
07:30 JEP 491: Synchronize Virtual Threads without Pinning
10:27 Security JEPs and Quantum Resistance
JEP 478: Key Derivation Function API (Preview)
JEP 496: Quantum-Resistant Module-Lattice-Based Key Encapsulation Mechanism
JEP 497: Quantum-Resistant Module-Lattice-Based Digital Signature Algorithm
13:00 Tools
JEP 493: Linking Run-Time Images without JMODs
16:47 Repreviews and Finalizations
JEP 489: Vector API (Ninth Incubator)
18:27 JEP 484: Class-File API
19:13 JEP 485: Stream Gatherers
21:22 JEP 487: Scoped Values (Fourth Preview)
22:15 JEP 488: Primitive Types in Patterns, instanceof, and switch (Second Preview)
22:30 How JEPs get finalized and included
23:44 JEP 492: Flexible Constructor Bodies (Third Preview)
24:09 JEP 494: Module Import Declarations (Second Preview)
25:07 JEP 495: Simple Source Files and Instance Main Methods (Fourth Preview)
29:24 JEP 499: Structured Concurrency (Fourth Preview)
34:04 Deprecations & Restrictions
34:46 JEP 472: Prepare to Restrict the Use of JNI
37:15 JEP 486: Permanently Disable the Security Manager
38:53 JEP 490: ZGC: Remove the Non-Generational Mode
Trash Talk - Exploring the JVM memory management by Gerrit Grunwald
42:09 JEP 498: Warn upon Use of Memory-Access Methods in sun.misc.Unsafe
45:43 Removal of 32-bit support
JEP 479: Remove the Windows 32-bit x86 Port
JEP 501: Deprecate the 32-bit x86 Port for Removal
47:37 Should we use Java 24 in production?
51:09 Looking forward to the next LTS in September
54:14 Conclusion
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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.
Hanno Embregts is a Java Developer with a passion for learning, teaching and making music. In his day-to-day job as an IT Consultant at Info Support, Hanno prefers work that is fast-paced and versatile. This is why he juggles Java development, software architecture, public speaking, leading Info Support’s Java Community and teaching courses at Info Support’s Knowledge Centre. Hanno is both a Java Champion and an Oracle ACE Associate. He is also one of the editors of the Dutch Java Magazine. Outside of work Hanno likes making music with his friends. He plays the flute, the guitar and he likes to sing. Software conferences are Hanno’s favourite thing in the world, because they allow him to do the three things he loves most at the same time: learning new things, teaching others about stuff he discovered and yes: even making music from time to time!
Simon is Deputy CTO at Azul.
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