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[jetty-dev] JDK 17 is now in Rampdown Phase One
  • From: Rory O'Donnell <rory.odonnell@xxxxxxxxxx>
  • Date: Mon, 14 Jun 2021 10:52:08 +0100
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Hi Simone,

Per the JDK 17 schedule , we are in Rampdown Phase One [1].

Please advise if you find any issues while testing the latest Early Access builds.
  • Schedule:
    • 2021/06/10       Rampdown Phase One
    • 2021/07/15        Rampdown Phase Two
    • 2021/08/05        Initial Release Candidate
    • 2021/08/19        Final Release Candidate
    • 2021/09/14        General Availability
The overall feature set is frozen. No further JEPs will be targeted to this release.

  • Important JEPs have been integrated – Attention Required!
  • JEP 411: Deprecate the Security Manager for Removal
    • Deprecate, for removal, most Security Manager related classes and methods.
    • Warning message at startup if the Security Manager is enabled on the command line.
    • Warning message at run time if a Java application or library installs a Security Manager dynamically.
    • Deprecation is in concert with the legacy Applet API (JEP 398).
  • JEP 407: Remove RMI Activation
    • Removal the Remote Method Invocation (RMI) Activation mechanism, while preserving the rest of RMI.
    • It was deprecated for removal by JEP 385 in Java SE 15.
  • JEP 403: Strongly Encapsulate JDK Internals
    • Strongly encapsulate all internal elements of the JDK, except for critical internal APIs such as sun.misc.Unsafe.
    • It will no longer be possible to relax the strong encapsulation of internal elements via a single command-line option.

OpenJDK 17 Early Access build 26 is available at https://jdk.java.net/17

  • Changes in recent builds that maybe of interest:
  • Build 26:
    • JDK-8268241: deprecate JVM TI Heap functions 1.0
    • JDK-8266846: Add java.time.InstantSource
    • JDK-8248268: Support KWP in addition to KW
    • JDK-8204686: Dynamic parallel reference processing support for Parallel GC
    • JDK-8259530: Generated docs contain MIT/GPL-licenced works without reproducing the licence [Reported by Apache Maven]
    • JDK-8266766: Arrays of types that cannot be an annotation member do not yield exceptions [Reported by ByteBuddy]
    • JDK-8266598: Exception values for AnnotationTypeMismatchException are not always informative [Reported by ByteBuddy]
  • Build 25
    • JDK-8266653: Change update mode for JDK rpm/deb installers as it breaks "yum update" for JDK11+
    • JDK-8263202: Update Hebrew/Indonesian/Yiddish ISO 639 language codes to current
    • JDK-8229517: Support for optional asynchronous/buffered logging
    • JDK-8182043: Access to Windows Large Icons

OpenJDK 18 Early Access build 1 is now available at https://jdk.java.net/18

Other Topics which might be of Interest:

  • Java Cryptographic Roadmap [2] has been updated.
  • Inside Java Newscast #6 [3]
    • a closer look at the list of JEPs of JDK 17 as well as the development process
  • Inside Java Newscast #7 [4]
    • discusses in greater detail `pattern matching for switch`, previewed in JDK 17

Rgds,Rory

[1] https://mail.openjdk.java.net/pipermail/jdk-dev/2021-June/005690.html
[2] https://java.com/en/jre-jdk-cryptoroadmap.html
[3] https://inside.java/2021/06/10/insidejava-newscast-006/
[4] https://inside.java/2021/06/13/podcast-017/

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

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