JDK 17 Early Access build 23 is available

[Deepak Damodaran]

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

  *   These early-access , open-source builds are provided under the
     *   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:
     *   JEP 356: Enhanced Pseudo-Random Number Generators<https://openjdk.java.net/jeps/356>
     *   JEP 382: New macOS Rendering Pipeline<https://openjdk.java.net/jeps/382>
     *   JEP 391: macOS/AArch64 Port<https://openjdk.java.net/jeps/391>
     *   JEP 398: Deprecate the Applet API for Removal<https://openjdk.java.net/jeps/398>
     *   JEP 409: Sealed Classes<https://openjdk.java.net/jeps/409>
     *   JEP 410: Remove the Experimental AOT and JIT Compiler<https://openjdk.java.net/jeps/410>
     *   JEP 412: Foreign Function & Memory API (Incubator)<https://openjdk.java.net/jeps/412>
     *   JEP 414: Vector API (Second Incubator)<https://openjdk.java.net/jeps/414>
  *   Release Notes are available at https://jdk.java.net/17/release-notes
  *   Changes in recent builds that maybe of interest:
     *   Build 23
        *   JDK-8243287: Removal of Unsafe::defineAnonymousClass.
     *   Build 22
        *   JDK-8266369: New implementation of java.nio.channels.Selector on Microsoft Windows.
     *   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 loom-dev at openjdk.java.net<mailto:loom-dev at openjdk.java.net>.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 panama-dev at openjdk.java.net<mailto:panama-dev at openjdk.java.net>. To send e-mail to this address you must first subscribe to the mailing list<https://mail.openjdk.java.net/mailman/listinfo/panama-dev>.

Regards
Deepak

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