Salut Yoann,

As always, thanks for the feedback!

There has been no ASM release since https://gitlab.ow2.org/asm/asm/-/commit/33a3c0e1852323eb024860ad05269403069afa50, that could explain the problem you're facing with Gradle and EA19.

Thanks,

--David


On 02/02/2022 12:20, Yoann Rodiere wrote:
Hello David,

All is well for Hibernate projects on JDK 18.

I'm having trouble running the Gradle builds on JDK19, though: even running Gradle itself on JDK11, it seems Gradle is unable to use JDK19 as a toolchain. I'm still investigating and will report where appropriate (it's probably a Gradle bug).

Summary for the wiki:

Hibernate ORM: Versions 5.6 and 6.0 tested against JDK 18 EA33. No problems to report.

Hibernate Validator: Version 7.0 tested against JDK 18 EA33 and JDK 19 EA7. No problems to report.

Hibernate Search: Version 6.1 tested against JDK 18 EA33 and JDK 19 EA7. No problems to report.

Hibernate Reactive: Version 1.1 tested against JDK 18 EA33. No problems to report.



Yoann Rodière
Hibernate Team
yo...@hibernate.org


On Mon, 31 Jan 2022 at 12:58, David Delabassee <david.delabas...@oracle.com> wrote:

    Greetings!

    First off, on behalf of Oracle’s Java Team, I’d like to wish you a
    happy
    and prosperous new year!

    In 2022, two Java releases will be made available:
    - JDK 18 (March 2022)
    - JDK 19 (September 2022)

    JDK 18[1] has entered Rampdown Phase Two (RDP2)[2]. Given that and
    to be
    better prepared for the future, it makes sense to begin testing your
    project(s) using early access (EA) builds of JDK 19[3]. Your feedback
    allows us to evaluate and address issues you find while testing EA
    builds.

    This time, we have two heads-up to share:

    ## Heads-Up: JDK 18 - JEP 421 Deprecate Finalization for Removal

    Finalization is an outdated and brittle resource cleaning mechanism
    present in the platform since, well, forever. Its use has been
    discouraged for quite some time in favor of better alternatives
    (i.e.,
    'try with resources' and Cleaners). JEP 421 is another step
    towards the
    removal of finalizers as it offers tools to investigate if a
    codebase is
    still using finalization. To learn more, you should read JEP
    421[4]. You
    should also listen to the latest episode of the Inside Java
    Podcast[5]
    dedicated to this topic. We encourage you to check if your project is
    still using finalizers. If so, you should start to think about
    removing
    them and rely instead on either 'try with resources' or Cleaners.

    ## Heads-Up: JVM does not flag constant class entries ending in '/'

    Prior to JDK 19, the JVM is loading classes (1) whose class file
    major
    version is <49, i.e., before JDK 1.5, and (2) the class's name
    ends with
    a '/'. This violates section 4.2.1 of the JVM specification [6]
    and is
    addressed in JDK 19. In JDK 19, the JVM is throwing, for such
    classes, a
    ClassFormatError exception as it already does with newer classes (JDK
    1.5+). Given that this issue affects only pre-JDK 1.5 classes, we
    expect
    the compatibility risk to be very low.

    For more details, see JDK-8278448[7].

    [1] https://jdk.java.net/18/
    
<https://urldefense.com/v3/__https://jdk.java.net/18/__;!!ACWV5N9M2RV99hQ!d9v7ZDgoXgRTA6rmUmI-zmmZ25r7qapNxj75iRC_6Y7dJqde5LsMZGXSYDxQRCRWFo2s$>
    [2]
    https://mail.openjdk.java.net/pipermail/jdk-dev/2022-January/006361.html
    [3] https://jdk.java.net/19/
    
<https://urldefense.com/v3/__https://jdk.java.net/19/__;!!ACWV5N9M2RV99hQ!d9v7ZDgoXgRTA6rmUmI-zmmZ25r7qapNxj75iRC_6Y7dJqde5LsMZGXSYDxQRHP_IMbv$>
    [4] https://openjdk.java.net/jeps/421
    [5] https://inside.java/podcast/21
    
<https://urldefense.com/v3/__https://inside.java/podcast/21__;!!ACWV5N9M2RV99hQ!d9v7ZDgoXgRTA6rmUmI-zmmZ25r7qapNxj75iRC_6Y7dJqde5LsMZGXSYDxQRMnPX2XI$>
    [6]
    https://docs.oracle.com/javase/specs/jvms/se17/html/jvms-4.html#jvms-4.2.1
    [7] https://bugs.openjdk.java.net/browse/JDK-8278448


    ## JDK 18

    JDK 18 is now in RDP2 (Rampdown Phase Two) with its feature set
    frozen a
    few weeks back when it entered RDP1.

    ### JEPs integrated to JDK 18:

    - JEP 400: UTF-8 by Default
    - JEP 408: Simple Web Server
    - JEP 413: Code Snippets in Java API Documentation
    - JEP 416: Reimplement Core Reflection with Method Handles
    - JEP 417: Vector API (Third Incubator)
    - JEP 418: Internet-Address Resolution SPI
    - JEP 419: Foreign Function & Memory API (Second Incubator)
    - JEP 420: Pattern Matching for switch (Second Preview)
    - JEP 421: Deprecate Finalization for Removal

    JDK 18 Early-Access builds 33 are now available[8], and are provided
    under the GNU General Public License v2, with the Classpath
    Exception.
    Also available are the Release Notes[9].

    [8] https://jdk.java.net/18/
    
<https://urldefense.com/v3/__https://jdk.java.net/18/__;!!ACWV5N9M2RV99hQ!d9v7ZDgoXgRTA6rmUmI-zmmZ25r7qapNxj75iRC_6Y7dJqde5LsMZGXSYDxQRCRWFo2s$>
    [9] https://jdk.java.net/18/release-notes
    
<https://urldefense.com/v3/__https://jdk.java.net/18/release-notes__;!!ACWV5N9M2RV99hQ!d9v7ZDgoXgRTA6rmUmI-zmmZ25r7qapNxj75iRC_6Y7dJqde5LsMZGXSYDxQRPPciZ3T$>

    ### Changes in JDK 18 since Rampdown Phase One that are of interest:

    - JDK-8278373: Correcting References to Overloaded Methods in Javadoc
    Documentation
    - JDK-8279065: Deserialization filter and filter factory property
    error
    reporting under specified
    - JDK-8255409: SunPKCS11 Provider Now Supports Some PKCS#11 v3.0 APIs
    - JDK-8275610: C2: Object field load floats above its null check
    resulting in a segfault [Reported by Apache POI]


    ## JDK 19

    JDK 19 Early-Access builds 7 are now available[10], and are provided
    under the GNU General Public License v2, with the Classpath
    Exception.
    Also available are the Release Notes[11].

    [10] https://jdk.java.net/19/
    
<https://urldefense.com/v3/__https://jdk.java.net/19/__;!!ACWV5N9M2RV99hQ!d9v7ZDgoXgRTA6rmUmI-zmmZ25r7qapNxj75iRC_6Y7dJqde5LsMZGXSYDxQRHP_IMbv$>
    [11] https://jdk.java.net/19/release-notes
    
<https://urldefense.com/v3/__https://jdk.java.net/19/release-notes__;!!ACWV5N9M2RV99hQ!d9v7ZDgoXgRTA6rmUmI-zmmZ25r7qapNxj75iRC_6Y7dJqde5LsMZGXSYDxQRHlxp1MU$>

    ### Changes in recent JDK 19 EA builds that maybe of interest:

    - JDK-8279258: Auto-vectorization enhancement for two-dimensional
    array
    operations
    - JDK-8273914: Indy string concat changes order of operations
    - JDK-8268081: Upgrade Unicode Data Files to 14.0.0
    - JDK-8278087: Deserialization filter and filter factory property
    error
    reporting under specified
    - JDK-8276766: Enable jar and jmod to produce deterministic
    timestamped
    content
    - JDK-8274679: Remove unnecessary conversion to String in security
    code
    in java.base
    - JDK-8279833: Loop optimization issue in String.encodeUTF8_UTF16
    - JDK-8279064: New options for ktab to provide non-default salt
    - JDK-8280055: JFR: Improve ObjectContext implementation
    - JDK-8268831: Improve javadoc tool handling of streams


    ## Topics of Interest:

    - "State of Valhalla" update
    
https://mail.openjdk.java.net/pipermail/valhalla-spec-experts/2021-December/001747.html



    - Java's Plans for 2022 - Inside Java Newscast
    https://inside.java/2022/01/13/insidejava-newscast-018/
    
<https://urldefense.com/v3/__https://inside.java/2022/01/13/insidejava-newscast-018/__;!!ACWV5N9M2RV99hQ!d9v7ZDgoXgRTA6rmUmI-zmmZ25r7qapNxj75iRC_6Y7dJqde5LsMZGXSYDxQRCswm9yQ$>

    - New Loom Early Access builds based on JDK 19 EAb2
    https://mail.openjdk.java.net/pipermail/loom-dev/2021-December/003394.html

    - New Panama Foreign Early-Access builds (including jextract) jdk 18
    https://mail.openjdk.java.net/pipermail/panama-dev/2022-January/016131.html

    - January 2022 Critical Patch Update Released
    As part of the Jan 2022 Critical Patch Update we released JDK 17.0.2
    LTS, JDK 11.0.14 LTS, JDK 8u321, and JDK 7u331 as well as OpenJDK
    17.0.2
    (publicly available).
    https://www.oracle.com/security-alerts/cpujan2022.html


    In closing, I'd like to thank you again for being a welcomed part
    of the
    Quality Outreach program! We look forward to your continued
    participation in 2022. And as always, if you find an issue, please
    let
    us know through the usual channels.

    Regards,

    --David

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