Greetings!
The proposed schedule for JDK 19 is now known [1] with ‘Rampdown Phase
One’ set for June 9th and ‘General Availability’ set for September 20th.
The next several weeks will be interesting to watch as the scope of JDK
19 is revealed.
You also play an important roll during these phases, which is your
opportunity to share feedback . When developers such as yourself tell us
of issues faced in the latest OpenJDK early-access (EA) builds, we then
have a chance to fix them before that feature release reaches general
availability (GA).
We also enjoy when people tell us that all their tests are green! It
gives us confidence ;-) So regardless of the tests color (red or green),
please do not hesitate to send me a short mail as both types of feedback
are useful.
[1] https://mail.openjdk.java.net/pipermail/jdk-dev/2022-April/006481.html
## Heads-Up: Java Cryptographic Extension Survey
The Java Cryptographic Extension (JCE) has been in Java SE for a long
time and has made incremental changes over the years. The OpenJDK
Security Team is conducting a survey [2] to know more about how projects
are using JCE and what changes, features, and API enhancements would be
useful going forward.
The survey is clossing on April 29 so if you have written or maintain
code that uses the JCE API, please make sure to fill this short survey
[2] as soon as possible.
[2] https://www.questionpro.com/t/AUzP7ZrFWv
## Heads-Up: New macOS Rendering Pipeline on macOS
JEP 382 [3] introduced in JDK 17 support for the new macOS Metal
graphics pipeline for Swing and Java2D. JDK 19 starting build 18 is
switching the default to be the new macOS Metal rendering pipeline
instead of the old Apple OpenGL API. For more details please see
JDK-8284378 [4].
Java applications running on macOS (10.14 or later) will not need to
take any action, as they will automatically benefit from faster graphics
with lower power consumption, and the use of a more modern stable
graphics API which will be able to work better on current and future
Apple systems.
[3] https://openjdk.java.net/jeps/382
[4] https://bugs.openjdk.java.net/browse/JDK-8284378
## JDK 19 Early-Access builds
JDK 19 Early-Access builds 18 are now available [5], and are provided
under the GNU General Public License v2, with the Classpath Exception.
The Release Notes are available here [6].
[5] https://jdk.java.net/19/
[6] https://jdk.java.net/19/release-notes
### JEPs targeted to JDK 19, so far:
- JEP 422: Linux/RISC-V Port https://openjdk.java.net/jeps/422
### Recent changes that maybe of interest:
Build 18:
- JDK-8284378: Make Metal the default Java 2D rendering pipeline for macOS
- JDK-8265315: Update CLDR to version 41
- JDK-8270090: C2: LCM may prioritize CheckCastPP nodes over projections
[Reported by JaCoCo]
- JDK-8284361: Updating ASM to 9.3 for JDK 19
- JDK-8284330: jcmd may not be able to find processes in the container
- JDK-8284579: Improve VarHandle checks for interpreter
Build 17:
- JDK-8282819: Deprecate Locale class constructors
- JDK-8254935: Deprecate the PSSParameterSpec(int) constructor
- JDK-8283060: RawNativeLibraries should allow multiple clients to
load/unload the same library
Build 16:
- JDK-8281561: Disable http DIGEST mechanism with MD5 and SHA-1 by default
- JDK-8264160: Regex \b is not consistent with \w without
UNICODE_CHARACTER_CLASS
- JDK-8163327: Remove 3DES from the default enabled cipher suites list
- JDK-8267319: Use larger default key sizes and algorithms based on CNSA
- JDK-8283350: (tz) Update Timezone Data to 2022a
## Project Loom Updates
The first Loom related JEP is now in Candidate phase, i.e. JEP: 425:
Virtual Threads (Preview) [7]. As of now, JEP 425 doesn't yet 'propose
to target' any particular feature release.
[7] https://openjdk.java.net/jeps/425
In addition, Project Loom early-access builds 19-loom+5-429 (2022/4/4)
are now available [8] with related Javadoc [9].
These builds are based on JDK 19 and are provided under the GNU General
Public License, version 2, with the Classpath Exception and are produced
for the purpose of gathering feedback. Use for any other purpose is at
your own risk. Proper feedback should be sent to the `loom-dev` mailing
list [10].
[8] https://jdk.java.net/loom/
[9] https://download.java.net/java/early_access/loom/docs/api/
[10] https://mail.openjdk.java.net/mailman/listinfo/loom-dev
## Topics of Interest:
* New candidate JEP: 426: Vector API (4th Incubator)
https://openjdk.java.net/jeps/426
* Virtual Thread Deep Dive - Inside Java Newscast #23
https://inside.java/2022/04/07/insidejava-newscast-023/
* Project Panama: Say Goodbye to JNI
https://inside.java/2022/04/04/projectpanama/
* Java Cryptographic Extension Survey
https://inside.java/2022/04/12/jce-survey/
As usual, let us know if you find any issues while testing your
project(s) on the latest JDK early-access builds. Thanks for your support!
--David
