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<https://openjdk.java.net/jeps/411>
o Deprecate, for removal, most Security Manager related classes and methods.
o Warning message at startup if the Security Manager is enabled on the
command line.
o Warning message at run time if a Java application or library installs a
Security Manager dynamically.
o Deprecation is in concert with the legacy Applet API (JEP 398).
· JEP 407: Remove RMI Activation<https://openjdk.java.net/jeps/407>
o Removal the Remote Method Invocation (RMI) Activation mechanism, while
preserving the rest of RMI.
o It was deprecated for removal by JEP
385<https://openjdk.java.net/jeps/385> in Java SE 15.
· JEP 403: Strongly Encapsulate JDK
Internals<https://openjdk.java.net/jeps/403>
o Strongly encapsulate all internal elements of the JDK, except for critical
internal APIs such as sun.misc.Unsafe.
o It will no longer be possible to relax the strong encapsulation of
internal elements via a single command-line option.
* Other features integrated in JDK 17:
* JEP 306: Restore Always-Strict Floating-Point
Semantics<https://openjdk.java.net/jeps/306>
* 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 406: Pattern Matching for switch
(Preview)<https://openjdk.java.net/jeps/406>
* 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>
* JEP 415: Context-Specific Deserialization
Filters<https://openjdk.java.net/jeps/415>
OpenJDK 17 Early Access build 26 is 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>
* Release Notes are available at https://jdk.java.net/17/release-notes
* Changes in recent builds that maybe of interest:
* Build 26:
o JDK-8268241: deprecate JVM TI Heap functions 1.0
o JDK-8266846: Add java.time.InstantSource
o JDK-8248268: Support KWP in addition to KW
o JDK-8204686: Dynamic parallel reference processing support for Parallel GC
o JDK-8259530: Generated docs contain MIT/GPL-licenced works without
reproducing the licence [Reported by Apache Maven]
o JDK-8266766: Arrays of types that cannot be an annotation member do not
yield exceptions [Reported by ByteBuddy]
o JDK-8266598: Exception values for AnnotationTypeMismatchException are not
always informative [Reported by ByteBuddy]
· Build 25
o JDK-8266653: Change update mode for JDK rpm/deb installers as it breaks
"yum update" for JDK11+
o JDK-8263202: Update Hebrew/Indonesian/Yiddish ISO 639 language codes to
current
o JDK-8229517: Support for optional asynchronous/buffered logging
o JDK-8182043: Access to Windows Large Icons
OpenJDK 18 Early Access build 1 is now available at https://jdk.java.net/18
* 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>
· Issues addressed in this build -
here<https://github.com/openjdk/jdk/compare/jdk-18%2B0...jdk-18%2B1>
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 Podcast #7 [4]
* discusses in greater detail `pattern matching for switch`, previewed
in JDK 17
Rgds, Deepak
[1] https://mail.openjdk.java.net/pipermail/jdk-dev/2021-June/005690.html
<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/
