Re: JDK 25 Initial Release Candidate

Hi David,

I installed the RC of JDK 25 yesterday on Policeman Jenkins. Since then 
we had seen no issues; everything works. Vector Incubator had no API 
changes so no changes needed.

https://jenkins.thetaphi.de/job/Lucene-main-Linux/

The JDK 26 ea+10 is also running fine. Great work!

Uwe

Am 12.08.2025 um 11:06 schrieb David Delabassee:
>
> Welcome to the OpenJDK Quality Outreach summer update!
>
> Everything is on track for the General Availability of Java 25 on 
> September 16 as the JDK 25 Release Candidate builds (RC1 - builds 35) 
> are now available[1]. If you haven't done so yet, please start testing 
> your project(s) using JDK 26 early-access builds and let us know the 
> results.
>
> Changing topics, the JVM Language Summit (JVMLS) was held last week in 
> Santa Clara (California). JVMLS is a unique event that brings together 
> Java and JVM architects and OpenJDK developers to discuss the 
> evolution and future directions of the platform. The first JVMLS video 
> has just been published, with more to follow. To stay informed about 
> the latest developments, keep an eye on this JVMLS playlist[2].
>
> [1] https://mail.openjdk.org/pipermail/jdk-dev/2025-August/010296.html 
> <https://mail.openjdk.org/pipermail/jdk-dev/2025-August/010296.html>
>
> [2] 
> https://www.youtube.com/playlist?list=PLX8CzqL3ArzUOgZpIX6GsoRhPbnij-sco 
> <https://www.youtube.com/playlist?list=PLX8CzqL3ArzUOgZpIX6GsoRhPbnij-sco>
>
> # JDK 25
>
> The JDK 25 early-access builds 35 are available[3], and are provided 
> under the GNU General Public License v2, with the Classpath Exception. 
> The Release Notes are available here[4]. For more details on Java 25, 
> please refer to the “Topics of Interest” section below.
>
> ## JEPs Integrated into JDK 25:
>
> - JEP 470: PEM Encodings of Cryptographic Objects (Preview)
>
> - JEP 502: Stable Values (Preview)
>
> - JEP 503: Remove the 32-bit x86 Port
>
> - JEP 505: Structured Concurrency (5th Preview)
>
> - JEP 506: Scoped Values
>
> - JEP 507: Primitive Types in Patterns, instanceof, and switch (3rd 
> Preview)
>
> - JEP 508: Vector API (1Oth Incubator)
>
> - JEP 509: JFR CPU-Time Profiling (Experimental)
>
> - JEP 510: Key Derivation Function API
>
> - JEP 511: Module Import Declarations
>
> - JEP 512: Compact Source Files and Instance Main Methods
>
> - JEP 513: Flexible Constructor Bodies
>
> - JEP 514: Ahead-of-Time Command-Line Ergonomics
>
> - JEP 515: Ahead-of-Time Method Profiling
>
> - JEP 518: JFR Cooperative Sampling
>
> - JEP 519: Compact Object Headers
>
> - JEP 520: JFR Method Timing & Tracing
>
> - JEP 521: Generational Shenandoah
>
> ## Changes in Recent JDK 25 Builds of Interest:
>
> - JDK-8359596: Behavior change when both -Xlint:options and 
> -Xlint:-options flags are given [Reported by Apache Lucene]
>
> - JDK-8356698: JFR: @Contextual
>
> - JDK-8351594: JFR: Rate-limited sampling of Java events
>
> - JDK-8241678: Remove PerfData sampling via StatSampler
>
> - JDK-8356870: HotSpotDiagnosticMXBean.dumpThreads and jcmd 
> Thread.dump_to_file updates
>
> - JDK-8350689: Turn on timestamp and thread metadata by default for 
> java.security.debug
>
> - JDK-8354450: A File should be invalid if an element of its name 
> sequence ends with a space
>
> - JDK-8350880: (zipfs) Add support for read-only zip file systems
>
> - JDK-8341346: Add support for exporting TLS Keying Material
>
> - JDK-8345431: Improve jar --validate to detect duplicate or invalid 
> entries
>
> - JDK-8359170: Added 4 New Root Certificates from Sectigo Limited
>
> - JDK-8358590: JFR: Include min and max in MethodTiming event
>
> - JDK-8228773: URLClassLoader constructors should include API note 
> warning that the parent should not be null
>
> - JDK-8356049: Need a simple way to play back a sound clip
>
> - JDK-8357955: java.lang.classfile.Signature.ArrayTypeSig.of IAE not 
> thrown for dims > 255
>
> - JDK-8359729: Remove the multiplex protocol from the RMI specification
>
> Note: A more exauhstive list of changes can be found here[5].
>
> [3] https://jdk.java.net/25/ <https://jdk.java.net/25/>
>
> [4] https://jdk.java.net/25/release-notes 
> <https://jdk.java.net/25/release-notes>
>
> [5] https://github.com/openjdk/jdk/compare/jdk-25+25...jdk-25+35 
> <https://github.com/openjdk/jdk/compare/jdk-25+25...jdk-25+35>
>
> # JDK 26
>
> The JDK 26 early-access builds 10 are available[6] and are provided 
> under the GNU General Public License v2, with the Classpath Exception. 
> The release notes are available here[7].
>
> ## Changes in Recent JDK 26 Builds of Interest:
>
> - JDK-8361380: ARM32: Atomic stubs should be in pre-universe [Reported 
> by JaCoCo]
>
> - JDK-8359170: Add 2 TLS and 2 CS Sectigo roots
>
> - JDK-8359809: AttributeList, RoleList and UnresolvedRoleList should 
> never accept other types of Object
>
> - JDK-8268406: Deallocate jmethodID native memory
>
> - JDK-8314180: Disable XPath in XML Signatures
>
> - JDK-8330940: Impossible to create a socket backlog greater than 200 
> on Windows 8+
>
> - JDK-8357653: Inner classes of type parameters emitted as raw types 
> in signatures
>
> - JDK-8347114: JMXServiceURL should require an explicit protocol
>
> - JDK-8309399: JVMTI spec needs to clarify when OPAQUE_FRAME is thrown 
> for reasons other than a native method
>
> - JDK-8361212: Remove AffirmTrust root CAs
>
> - JDK-8353925: Remove Sun Microsystems JCE Code Signing Root CA
>
> - JDK-8361964: Remove outdated algorithms from requirements and add 
> PBES2 algorithms
>
> - JDK-8332623: Remove setTTL()/getTTL() methods from 
> DatagramSocketImpl/MulticastSocket and 
> MulticastSocket.send(DatagramPacket, byte)
>
> - JDK-8359760: Remove the jdk.jsobject module
>
> - JDK-8356557: Update CodeSource::implies API documentation and 
> deprecate java.net.SocketPermission class for removal
>
> - JDK-8310932: [win] Install the JDK in a per-release directory 
> pointed to by a shared junction
>
> - JDK-8359956: Support algorithm constraints and certificate checks in 
> SunX509 key manager
>
> - JDK-8359395: XML signature generation does not support user provided 
> SecureRandom
>
> - JDK-8356645: Javac should utilize new ZIP file system read-only 
> access mode
>
> Note: A complete list of changes can be found here[8].
>
> [6] https://jdk.java.net/26/ <https://jdk.java.net/26/>
>
> [7] https://jdk.java.net/26/release-notes 
> <https://jdk.java.net/26/release-notes>
>
> [8] https://github.com/openjdk/jdk/compare/jdk-26+1...jdk-26+10 
> <https://github.com/openjdk/jdk/compare/jdk-26+1...jdk-26+10>
>
> # Topics of Interest
>
> - Java 25 Encodes PEM
>
> https://inside.java/2025/06/19/newscast-93/ 
> <https://inside.java/2025/06/19/newscast-93/>
>
> - JDK 25: Just Be Lazy
>
> https://inside.java/2025/07/29/just-be-lazy/ 
> <https://inside.java/2025/07/29/just-be-lazy/>
>
> - JDK 25: A Sneak Peek at the Stable Values API
>
> https://inside.java/2025/07/22/javaone-stablevalues/ 
> <https://inside.java/2025/07/22/javaone-stablevalues/>
>
> - Java 25 is ALSO no LTS Version
>
> https://inside.java/2025/07/03/newscast-94/ 
> <https://inside.java/2025/07/03/newscast-94/>
>
> - JVMLS: The not-so-final word on `final`
>
> https://inside.java/2025/08/12/jvmls-final-to-immutable/ 
> <https://inside.java/2025/08/12/jvmls-final-to-immutable/>
>
> - HTTP/3 in Java
>
> https://inside.java/2025/07/31/newscast-96/ 
> <https://inside.java/2025/07/31/newscast-96/>
>
> - Project Leyden's AOT / Shifting Java Startup into High Gear
>
> https://inside.java/2025/06/29/javaone-leyden-aot/ 
> <https://inside.java/2025/06/29/javaone-leyden-aot/>
>
> - Java Security Evolution - Out with the Old, In with the New
>
> https://inside.java/2025/07/20/javaone-security/ 
> <https://inside.java/2025/07/20/javaone-security/>
>
> - Java GPGPU Enablement: Are We There Yet?
>
> https://inside.java/2025/07/14/javaone-hat/ 
> <https://inside.java/2025/07/14/javaone-hat/>
>
> - Podcast “Deprecations & Removals” with Stuart Marks
>
> https://inside.java/2025/07/28/podcast-039/ 
> <https://inside.java/2025/07/28/podcast-039/>
>
> - Podcast “Integrity by Default” with Ron Pressler
>
> https://inside.java/2025/06/24/podcast-038/ 
> <https://inside.java/2025/06/24/podcast-038/>
>
> - A New Model for Java Object Initialization
>
> https://inside.java/2025/07/27/javaone-object-initialization/ 
> <https://inside.java/2025/07/27/javaone-object-initialization/>
>
> - ZGC: Paving the GC On-Ramp
>
> https://inside.java/2025/07/10/javaone-zgc/ 
> <https://inside.java/2025/07/10/javaone-zgc/>
>
> - Marshalling: Data-Oriented Serialization
>
> https://inside.java/2025/07/08/javaone-marshalling/ 
> <https://inside.java/2025/07/08/javaone-marshalling/>
>
> - Interconnecting Java and Native Code with the FFM API
>
> https://inside.java/2025/06/14/javaone-ffm/ 
> <https://inside.java/2025/06/14/javaone-ffm/>
>
> - FFM vs. Unsafe. Safety (Sometimes) Has a Cost
>
> https://inside.java/2025/06/12/ffm-vs-unsafe/ 
> <https://inside.java/2025/06/12/ffm-vs-unsafe/>
>
> - Java Gets a JSON API
>
> https://inside.java/2025/07/17/newscast-95/ 
> <https://inside.java/2025/07/17/newscast-95/>
>
> ~
>
> That’s it for now. If you run into any issues while testing your 
> projects with the latest JDK 26 early-access builds, don’t hesitate to 
> reach out. The end of summer is going to be exciting and busy with the 
> Java 25 launch coming up, so stay tuned!
>
> --David
>
-- 
Uwe Schindler
Achterdiek 19, D-28357 Bremen
https://www.thetaphi.de
eMail:[email protected]