# Foojay Podcast #78: Welcome to OpenJDK 25!

> We're excited to present the first episode of the Foojay Podcast's fifth season, marking the release of OpenJDK 25! For the first time, an OpenJDK release…

- URL: https://foojay.io/today/foojay-podcast-78/
- Published: 2025-09-15
- Authors: Frank Delporte, Simon Ritter
- Categories: Java, Podcast


We're excited to present the first episode of the Foojay Podcast's fifth season, marking the release of OpenJDK 25!

For the first time, an OpenJDK release is aligned with the year, and we can welcome release 25 in 2025. As usual in the release podcast, I have my regular guest, Simon Ritter. And in this episode, we are joined by Balkrishna Rawool to talk about all the new features in this new OpenJDK version.

## Video

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## Podcast Apps

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## Guests

* Simon Ritter
  * <https://www.linkedin.com/in/siritter/>
* Balkrishna Rawool
  * <https://www.linkedin.com/in/balkrishnarawool/>

## Content

00:00 Introduction of topic and guests

01:21 How important is release 25 and upgrading your runtimes?

* <https://jdk.java.net/25/>

06:00 Process of releasing a new OpenJDK version and looking forward to version 26

08:16 What are JEPs and OpenJDK projects

09:20 Project Leyden

* <https://openjdk.org/projects/leyden/>
* JEP 514: Ahead-of-Time Command-Line Ergonomics
  * <https://openjdk.org/jeps/514>
* JEP 515: Ahead-of-Time Method Profiling
  * <https://openjdk.org/jeps/515>

11:28 Leyden compared to other solutions

16:21 Project Valhalla

* <https://openjdk.org/projects/valhalla/>

17:06 JEP 519: Compact Object Headers

* <https://openjdk.org/jeps/519>

17:40 JEP 508: Vector API (Tenth Incubator)

* <https://openjdk.org/jeps/508>

18:58 Why Vector API is taking a long time to get finalized

21:04 JEP 502: Stable (Immutable) Values

* <https://openjdk.org/jeps/502>

23:17 Project Loom

* <https://openjdk.org/projects/loom/>

23:30 JEP 506: Scoped Values

* <https://openjdk.org/jeps/506>

24:13 JEP 505: Structured Concurrency (Fifth Preview)

* <https://openjdk.org/jeps/505>

29:22 How Java evolved over 30 years

33:34 Project Amber

* <https://openjdk.org/projects/amber/>

34:28 JEP 507: Primitive Types in Patterns, instanceof, and switch (Third Preview)

* <https://openjdk.org/jeps/507>

35:59 JEP 512: Compact Source Files and Instance Main Methods

* <https://openjdk.org/jeps/512>

37:36 JEP 511: Module Import Declarations

* <https://openjdk.org/jeps/511>

38:36 JEP 513: Flexible Constructor Bodies

* <https://openjdk.org/jeps/513>

39:12 What's next in Project Amber

43:25 What you can learn from JEPs, OpenJDK projects, and mailing lists

44:21 JEP 521: Generational Shenandoah

* <https://openjdk.org/jeps/521>
* Trash Talk by Gerrit Grunwald
  * <https://www.youtube.com/watch?v=xlwDe-hlSdI>

48:16 JEP 510: Key Derivation Function API

* <https://openjdk.org/jeps/510>

49:30 JEP 470: PEM Encodings of Cryptographic Objects (Preview)

* <https://openjdk.org/jeps/470>

51:28 About Java Flight Recorder

52:27 JEP 509: JFR CPU-Time Profiling (Experimental)

* <https://openjdk.org/jeps/509>

52:44 JEP 518: JFR Cooperative Sampling

* <https://openjdk.org/jeps/518>

53:15 JEP 520: JFR Method Timing \& Tracing

* <https://openjdk.org/jeps/520>

53:38 More about JFR and comparing with GC logs

57:04 JEP 503: Remove the 32-bit x86 Port

* <https://openjdk.org/jeps/503>

58:54 Looking forward to the following versions

01:00:58 Conclusion