[logback-dev] OpenJDK 17 Early Access build 16 is now available

Rory O'Donnell rory.odonnell at oracle.com
Fri Apr 2 09:48:58 CEST 2021

Hi Ceki,

*OpenJDK 17 Early Access build 16 is now available at 
**http://jdk.java.net/17* <http://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 <http://openjdk.java.net/legal/gplv2+ce.html>

  * Schedule (proposed)
      o 2021/06/10         Rampdown Phase One
      o 2021/07/15         Rampdown Phase Two
      o 2021/08/05         Initial Release Candidate
      o 2021/08/19         Final Release Candidate
      o 2021/09/14         General Availability

  * Features:*Heads-up on an important Candidate JEP
      o *Candidate - JEP 403: **Strongly Encapsulate JDK Internals
      o successor to JEP 396: Strongly Encapsulate JDK Internals by
        Default <https://openjdk.java.net/jeps/396>
      o strongly encapsulate all internal elements of the JDK by default
      o exception for Critical Internal APIs such as /sun.misc.Unsafe/

  * JEPs targeted to JDK 17, so far:
      o JEP 356: Enhanced Pseudo-Random Number Generators
      o JEP 382: New macOS Rendering Pipeline
      o JEP 391: macOS/AArch64 Port <https://openjdk.java.net/jeps/391>
      o JEP 398: Deprecate the Applet API for Removal

  * Release Notes are available at http://jdk.java.net/17/release-notes
  * Changes in recent builds that maybe of interest:
      o Build 16
          + JDK-8263898: (fs) Files.newOutputStream on the "NUL" special
            device throws FileSystemException: "nul: Incorrect function"
              # Reported by Apache Ant
      o Build 15
          + JDK-8263575: Conflict between JDK rpms and OL8 Modularity
            prevents dnf install/updates
      o Build 14
          + JDK-8262277: URLClassLoader.getResource throws undocumented
          + JDK-8262351: Extra '0' in java.util.Formatter for '%012a'
            conversion with a sign character

*Project Loom Early-Access Build: **Build 17-loom+5-191* 

  * These early-access builds are provided under the GNU General Public
    License, version 2, with the Classpath Exception
  * 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

*Quality Report for March 2021 was published here [1]*.

  * Thanks to everyone who contributed by creating features or
    enhancements, logging  bugs, or downloading and testing the
    early-access builds.

*Worth reading - **The Arrival of Java 16! 

  * JDK 16 Migration guide -
  * #AllTestsGreenOnJDK16 - If your tests are green on JDK 16 please
    respond to this *tweet
  * Oracle Developer Live event - Individual sessions:
     1. *Java 16: Consistency and Innovation* (Aurelio Garcia-Ribeyro):
        https://youtu.be/1acKCBbd6f4 <https://youtu.be/1acKCBbd6f4>
     2. *Java Language Futures: Spring 2021* (Gavin Bierman):
        https://youtu.be/K9SVV0XNIP8 <https://youtu.be/K9SVV0XNIP8>
     3. *Ask the Java Architects* (Mark Reinhold, Brian Goetz, Mikael
        Vidstedt, Ron Pressler): https://youtu.be/CVE4bWvuD3o
     4. *Learn Java 16 with IntelliJ IDEA *(Trisha Gee[JetBrains])*:
        *https://youtu.be/1hyWJTjxeGM <https://youtu.be/1hyWJTjxeGM>**
     5. *How Records Can Improve Serialization* (Julia Boes, Chris
        Hegarty): https://youtu.be/44D8M6ZxuLU
     6. *Vector API: SIMD Programming in Java* (Paul Sandoz, Sandhya
        Viswanathan[Intel]): https://youtu.be/VYo3p4R66N8
     7. *Your Guide to OpenJDK Development* (Jesper Wilhelmsson):
        https://youtu.be/bHcKTYy_Nec <https://youtu.be/bHcKTYy_Nec>
     8. *Project Skara: Migrating OpenJDK to Git and GitHub* (Erik
        Duveblad, Robin Westberg): https://youtu.be/-pBgplk7fVk
     9. *Monitoring and Troubleshooting Tools in the JDK* (Poonam
        Parhar): https://youtu.be/mcfubUmbZhQ <https://youtu.be/mcfubUmbZhQ>
    10. *Fast and Efficient Microservices for Java with GraalVM* (Alina
        Yurenko): https://youtu.be/_eRD6qJqtNw
    11. *Accelerating Productivity with Micronaut and Java Records*
        (Graeme Rocher): https://youtu.be/RoNeoXQBs9w
    12. *Scalable Microservices for Java using Helidon and Coherence CE*
        (Dmitry Aleksandrov, Aleks Seović): https://youtu.be/WTL0Zbjzveo
    13. *Cross-Platform User Interfaces, Developed with Java & OpenJFX
        Project* (Johan Vos [Gluon]): https://youtu.be/7eytbaBMm5o



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

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