OpenJDK 17 Early Access build 16 is now available at http://jdk.java.net/17

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

• Schedule (proposed)
• 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 

• Features:Heads-up on an important Candidate JEP
  
• Candidate - JEP 403: Strongly Encapsulate JDK Internals
• successor to  JEP 396: Strongly Encapsulate JDK Internals by Default
• strongly encapsulate all internal elements of the JDK by default
• exception for Critical Internal APIs such as sun.misc.Unsafe

• JEPs targeted to JDK 17, so far:
• JEP 356: Enhanced Pseudo-Random Number Generators
• JEP 382: New macOS Rendering Pipeline
• JEP 391: macOS/AArch64 Port
• 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:
• Build 16
• JDK-8263898: (fs) Files.newOutputStream on the "NUL" special device throws FileSystemException: "nul: Incorrect function" (win)
• Reported by Apache Ant
• Build 15
• JDK-8263575: Conflict between JDK rpms and OL8 Modularity prevents dnf install/updates
• 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 (2021/3/19)

• 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@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. 

• 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. 
• Oracle Developer Live event - Individual sessions:
1. Java 16: Consistency and Innovation (Aurelio Garcia-Ribeyro): https://youtu.be/1acKCBbd6f4
2. Java Language Futures: Spring 2021 (Gavin Bierman): 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
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
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
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

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