Hello, I have found a new test that doesn't pass on JDK20 https://issues.apache.org/jira/browse/ZOOKEEPER-4675
The problem is that Thread.suspend() now throws UnsupportedOperationException Any volunteers to fix it ? Enrico Il giorno mer 25 gen 2023 alle ore 06:23 David Delabassee <david.delabas...@oracle.com> ha scritto: > > Hi, > > First off, on behalf of Oracle’s Java Team, I’d like to wish you a happy > and prosperous new year! > > In 2023, two Java releases will be made available: JDK 20 (March) & JDK > 21 (September). > > JDK 20 [1] has entered Rampdown Phase Two (RDP2) [2], its initial > Release Candidate is planned for February 9. Given that and to be better > prepared for the future, it makes sense to begin testing your project(s) > using JDK 21 early-access (EA) builds. Your feedback allows us to > evaluate and address issues you find while testing EA builds. > > [1] https://jdk.java.net/20/ > [2] https://mail.openjdk.org/pipermail/jdk-dev/2023-January/007308.html > [3] https://jdk.java.net/21/ > > > ## Heads-up - JDK 21: JMX Subject Delegation & Fine-grained Security > Deprecation > > JMX has some features that rely on Security Manager APIs which are > deprecated for removal (see JEP 411 [4]). These features are "Subject > Delegation" and "Fine-grained Security", which both seem to be generally > unused, and would require significant investment to implement without > touching the deprecated APIs. As a consequence, "Subject Delegation" is > being proposed for deprecation in JDK 21 [5]. > > Fine-grained Security is also being considered for deprecation at the > same time. This feature [6] has allowed configuration of a security > policy to restrict or permit access to specific MBean actions. It is > expected that this feature is generally unused, possibly because there > is simply no demand for such detailed control, and that it is too > complex to create and maintain the policies. > > [4] https://openjdk.org/jeps/411 > [5] https://bugs.openjdk.org/browse/JDK-8298966 > [6] > https://docs.oracle.com/en/java/javase/19/jmx/fine-grained-security-example.html > > > ## JDK 20 Early-Access builds > > The latest early-access builds of JDK 20 (builds 32) are available [7], > and are provided under the GNU General Public License v2, with the > Classpath Exception. The Release Notes are available here [8]. > > [7] https://openjdk.org/projects/jdk/20/ > [8] https://jdk.java.net/20/release-notes > > ### JEPs integrated into JDK 20: > > - JEP 429: Scoped Values (Incubator) > - JEP 432: Record Patterns (2nd Preview) > - JEP 433: Pattern Matching for switch (4th Preview) > - JEP 434: Foreign Function & Memory API (2nd Preview) > - JEP 436: Virtual Threads (2nd Preview) > - JEP 437: Structured Concurrency (2nd Incubator) > > ### Changes in recent JDK 20 builds that may be of interest: > > - JDK-8298525: javadoc crashes with "UnsupportedOperationException: Not > yet implemented" in SeeTaglet.inherit [Reported by Apache Ant] > - JDK-8298893: Rename option UsePolyIntrinsics to UsePoly1305Intrinsics > - JDK-8287411: Enhance DTLS Performance > - JDK-8293554: Enhanced DH Key Exchanges > > > ## JDK 21 Early-Access builds > > The latest early-access builds of JDK 21 (builds 6) are available [9], > and are provided under the GNU General Public License v2, with the > Classpath Exception. The related EA API Javadoc is also available [10]. > > [9] https://jdk.java.net/21/ > [10] https://download.java.net/java/early_access/jdk21/docs/api/ > > ### Changes in recent JDK 21 builds that may be of interest: > > - JDK-8297295: Remove ThreadGroup.allowThreadSuspension > - JDK-8287411: Enhance DTLS performance > - JDK-8233269: Improve handling of JAVA_ARGS > - JDK-8297933: Compiler should only use verified interface types for > optimization > - JDK-8298381: Improve handling of session tickets for multiple SSLContexts > - JDK-8299501: Usage of constructors of primitive wrapper classes should > be avoided in java.util API docs > - JDK-8299475: Enhance SocketException by cause where it is missing in > net and nio area > - JDK-8299544: Improve performance of CRC32C intrinsics (non-AVX-512) > for small inputs > - JDK-8299576: Reimplement java.io.Bits using VarHandle access > - JDK-8278326: Socket close is not thread safe and other cleanup > - JDK-8299673: Simplify object pinning interactions with string > deduplication > > > ## JavaFX 20 & 21 Early-Access Builds > > These are early-access builds of the JavaFX Runtime, built from > openjdk/jfx [11]. Those EA builds are intended to allow JavaFX > application developers to build and test their applications with JavaFX > 20 on JDK 20. The latest EA builds (JavaFX 20 EA b16 2023/1/14) are now > available [12] and are provided under the GNU General Public License, > version 2, with the Classpath Exception. Please note that initial JavaFX > 21 early-access builds (JavaFX 21 b1 2023/1/19) are now available [13] > as well. > Feedback should be reported to the openjfx-dev mailing list [14]. > > [11] https://github.com/openjdk/jfx > [12] https://jdk.java.net/javafx20/ > [13] https://jdk.java.net/javafx21/ > [14] http://mail.openjdk.org/mailman/listinfo/openjfx-dev > > > ## Topics of Interest: > > - On Markdown in (Java) documentation comments > https://mail.openjdk.org/pipermail/javadoc-dev/2023-January/005563.html > > - Lifetimes in the Foreign Function & Memory API > https://cr.openjdk.java.net/~mcimadamore/panama/why_lifetimes.html > > - Java's Plans for 2023 - Inside Java Newscast #40 > https://inside.java/2023/01/19/newscast-40/ > > - Informational JEP: Preview Features: A Look Back, and A Look Ahead > https://openjdk.org/jeps/8300604 > > - Java 20 - An Almost Infinite Memory Segment Allocator > https://minborgsjavapot.blogspot.com/2023/01/java-20-almost-infinite-memory-segment.html > > - Podcast: “Helidon Níma & Virtual Threads” > https://inside.java/2023/01/12/podcast-029/ > > - From ThreadLocal to ScopedValue with Loom - JEP Café #16 > https://inside.java/2023/01/10/jepcafe16/ > > - Java 20 - Colossal Sparse Memory Segments > https://minborgsjavapot.blogspot.com/2023/01/java-20-colossal-sparse-memory-segments.html > > - Another Panama Update > https://mail.openjdk.org/pipermail/panama-dev/2022-December/018182.html > > - Secure Coding Guidelines for Java SE > https://inside.java/2023/01/04/secure-coding-guideline/ > > - Java Networking Enhancements since JDK 11 > https://inside.java/2022/12/28/jdk-networking-enhancements/ > > - Podcast: “Java Language - State of the Union” > https://inside.java/2022/12/23/podcast-028/ > > - Tutorial - Using Pattern Matching > https://dev.java/learn/pattern-matching/ > > - 24 Java Features You Missed In 2022 - Inside Java Newscast #39 > https://inside.java/2022/12/15/newscast-39/ > > > ## January 2023 Critical Patch Update Released > > As part of the January 2023 CPU, we released JDK 19.0.2, JDK 17.0.6 LTS, > JDK 11.0.18 LTS and JDK 8u361 as well as OpenJDK 19.0.2. > > > ## Oracle JRE and JDK Cryptographic Roadmap > > The crypto roadmap [14] provides the information on Oracle's plans for > changes to the security algorithms and associated policies/settings in > the Oracle JRE & JDK. > > [14] https://www.java.com/en/jre-jdk-cryptoroadmap.html > > ~ > > We look forward to your continued participation in 2023. And as always, > if you find an issue, please let us know through the usual channels. >
