[Jython-dev] JDK 17 Early Access build 23 is available

[Rory O'D. <ror...@or...>]

Hi All, ** **

*OpenJDK 17 Early Access build 23 is now available at 
*_*https://jdk.java.net/17* <https://jdk.java.net/17>_

  * These early-access , open-source builds are provided under the
      o GNU General Public License, version 2, with the Classpath
        Exception <https://openjdk.java.net/legal/gplv2+ce.html>
  * JEPs targeted to JDK 17, so far:
      o JEP 356: _Enhanced Pseudo-Random Number Generators
        <https://openjdk.java.net/jeps/356>_
      o JEP 382: _New macOS Rendering Pipeline
        <https://openjdk.java.net/jeps/382>_
      o JEP 391: _macOS/AArch64 Port <https://openjdk.java.net/jeps/391>_
      o JEP 398: _Deprecate the Applet API for Removal
        <https://openjdk.java.net/jeps/398>_
      o JEP 409: _Sealed Classes <https://openjdk.java.net/jeps/409>_
      o JEP 410: _Remove the Experimental AOT and JIT Compiler
        <https://openjdk.java.net/jeps/410>_
      o JEP 412: _Foreign Function & Memory API (Incubator)
        <https://openjdk.java.net/jeps/412>_
      o JEP 414: _Vector API (Second Incubator)
        <https://openjdk.java.net/jeps/414>_
  * Release Notes are available at
    _https://jdk.java.net/17/release-notes
    <https://jdk.java.net/17/release-notes>_
  * Changes in recent builds that maybe of interest:
      o Build 23
          + JDK-8243287: Removal of Unsafe::defineAnonymousClass.
      o Build 22
          + *JDK-8266369: New implementation of
            java.nio.channels.Selector on Microsoft Windows. *
      o Build 21
          + *JDK-8196415: JARs signed with SHA-1 algorithms are
            restricted by default.*
          + *JDK-8266858: macOS on ARM early access available.*
              # The ARM port should behave similarly to the Intel port.
                There are no known feature differences.
              # When reporting issues on macOS please specify if using
                ARM or x64.

*We need your help in testing new Selector implementation on Windows [1]:*

  * The implementation of the Selector API on Windows has been replaced
    in JDK 17 b22 with a new more scalable implementation [2].
  * The old select based Selector implementation has been the default
    since Java 1.4 (2002) so replacing it is a significant change.
  * It would be really helpful to get more testing of the new
    implementation before the fork for Rampdown Phase One on June 10th.

*Other Topics which might be of Interest:*

  * Updates to JEP 411: Deprecate the Security Manager for Removal |
    _Link_
    <https://mail.openjdk.java.net/pipermail/jdk-dev/2021-May/005569.html>
  * "The meaning, or not, of “LTS” | _Link_
    <https://mail.openjdk.java.net/pipermail/jdk-dev/2021-May/005543.html>
  * JFR Remote Recording Stream | _Link_
    <https://egahlin.github.io/2021/05/17/remote-recording-stream.html>

*Project Loom Early-Access Build: **_Build 17-loom+7-342_* 
<https://jdk.java.net/loom/>*(2021/5/11)*

  * These early-access builds are provided under the _GNU General Public
    License, version 2, with the Classpath Exception_
    <https://openjdk.java.net/legal/gplv2+ce.html>.
  * These builds are produced for the purpose of gathering feedback. Use
    for any other purpose is at your own risk.
  * Please send feedback via e-mail to _lo...@op...
    <mailto:loo...@op...>_.To send e-mail to this address
    you must first _subscribe to the mailing list_
    <https://mail.openjdk.java.net/mailman/listinfo/loom-dev>.

*Project Panama Early-Access Build: *_*Build 17-panama+3-167* 
<https://jdk.java.net/panama/>_*(2021/5/18)*

  * These early-access builds are provided under the _GNU General Public
    License, version 2, with the Classpath Exception_
    <https://openjdk.java.net/legal/gplv2+ce.html>.
  * This build is aimed at testing a prototype implementation of the
    foreign memory support, foreign function support and native
    extraction tooling from the "foreign-jextract" branch of the Panama
    repo.
  * Please send feedback via e-mail to _pa...@op...
    <mailto:pan...@op...>_. To send e-mail to this
    address you must first _subscribe to the mailing list_
    <https://mail.openjdk.java.net/mailman/listinfo/panama-dev>.


Rgds,Rory


[1] 
_https://mail.openjdk.java.net/pipermail/nio-dev/2021-May/008988.html_ 
<https://mail.openjdk.java.net/pipermail/nio-dev/2021-May/008988.html>
[2] _https://bugs.openjdk.java.net/browse/JDK-8266369_ 
<https://bugs.openjdk.java.net/browse/JDK-8266369>

-- 
Rgds, Rory O'Donnell
Quality Engineering Manager
Oracle EMEA, Dublin, Ireland