JDK 17 Early Access build 18 is available
by Rory O'Donnell
*Hi Sanne & Yoann, *
*OpenJDK 17 Early Access build 18****is now available at
**https://jdk.java.net/17 <https://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 <https://openjdk.java.net/legal/gplv2+ce.html>
* Release Notes are available at http://jdk.java.net/17/release-notes
<https://jdk.java.net/17/release-notes>
**G1 pauses may be extremely long with EA build JDK-17+18*
*During performance testing we noticed that due to a recent change
(JDK-8262068) GC pauses after a G1 full GC may be extremely slow. The
problem has been fixed with JDK-8264987 and that has already been
integrated. This change will be available with the following EA build
JDK-17+19. For more technical info please see [1]
*JEP 382 [2]** - Starting with build 19, **JDK 17 for macOS is
*temporarily* switched from using OpenGL**to using Apple's Metal
API**for Java 2D rendering.*
Heads up to anyone who is testing JDK 17 for running apps on macOS.
Starting with build 19, JDK 17 for macOS is *temporarily* switched from
using OpenGL to using Apple's Metal API for Java 2D rendering.
If you are running any kind of 2D / Swing/ AWT UI application on macOS,
and see any rendering related problems
starting with JDK 17 b19, please do report them to us along with a test
case and screen shots.
You may also set "-Dsun.java2d.opengl=true" to re-enable OpenGL - which
implicitly disables Metal - to confirm that it is a Metal related
rendering glltch.
Rgds,Rory
[1]
https://mail.openjdk.java.net/pipermail/hotspot-gc-dev/2021-April/034745....
[2] https://openjdk.java.net/jeps/382
--
Rgds, Rory O'Donnell
Quality Engineering Manager
Oracle EMEA, Dublin, Ireland
3 years, 8 months
OpenJDK 17 Early Access build 16 is now available
by Rory O'Donnell
Hi Sanne & Yoann,
*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
<https://openjdk.java.net/jeps/403>*
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
<https://openjdk.java.net/jeps/356>
o JEP 382: New macOS Rendering Pipeline
<https://openjdk.java.net/jeps/382>
o JEP 391: macOS/AArch64 Port <https://openjdk.java.net/jeps/391>
o JEP 398: Deprecate the Applet API for Removal
<https://openjdk.java.net/jeps/398>
* Release Notes are available at http://jdk.java.net/17/release-notes
<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"
(win)
# 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
IllegalArgumentException
+ 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*
<http://jdk.java.net/loom/>*(2021/3/19)*
* These early-access builds are provided under the GNU General Public
License, version 2, with the Classpath Exception
<http://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(a)openjdk.java.net
<mailto:loom-dev@openjdk.java.net>. To send e-mail to this address
you must first subscribe to the mailing list
<http://mail.openjdk.java.net/mailman/listinfo/loom-dev>.
*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!
<https://inside.java/2021/03/16/the-arrival-of-java16/>*
* JDK 16 Migration guide -
https://docs.oracle.com/en/java/javase/16/migrate/getting-started.html
* #AllTestsGreenOnJDK16 - If your tests are green on JDK 16 please
respond to this *tweet
<https://twitter.com/Sharat_Chander/status/1368978627816136707>*.
* 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
<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
<https://youtu.be/44D8M6ZxuLU>
6. *Vector API: SIMD Programming in Java* (Paul Sandoz, Sandhya
Viswanathan[Intel]): https://youtu.be/VYo3p4R66N8
<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
<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
<https://youtu.be/_eRD6qJqtNw>
11. *Accelerating Productivity with Micronaut and Java Records*
(Graeme Rocher): https://youtu.be/RoNeoXQBs9w
<https://youtu.be/RoNeoXQBs9w>
12. *Scalable Microservices for Java using Helidon and Coherence CE*
(Dmitry Aleksandrov, Aleks Seović): https://youtu.be/WTL0Zbjzveo
<https://youtu.be/WTL0Zbjzveo>
13. *Cross-Platform User Interfaces, Developed with Java & OpenJFX
Project* (Johan Vos [Gluon]): https://youtu.be/7eytbaBMm5o
<https://youtu.be/7eytbaBMm5o>
Rgds,Rory
[1]
https://wiki.openjdk.java.net/display/quality/Quality+Outreach+Report+Mar...
<https://wiki.openjdk.java.net/display/quality/Quality+Outreach+Report+Mar...>
--
Rgds, Rory O'Donnell
Quality Engineering Manager
Oracle EMEA, Dublin, Ireland
3 years, 8 months
