#jdk21 — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #jdk21, aggregated by home.social.
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100k blocking tasks. A few seconds. On a laptop. With #VirtualThreads in #Java25, that’s reality. Mihaela Gheorghe-Roman explains what changed since #JDK21 & why thread-per-request is back. Still running huge thread pools?
Rethink: https://javapro.io/2026/03/05/java-25-and-the-new-age-of-performance-virtual-threads-and-beyond/
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100k blocking tasks. A few seconds. On a laptop. With #VirtualThreads in #Java25, that’s reality. Mihaela Gheorghe-Roman explains what changed since #JDK21 & why thread-per-request is back. Still running huge thread pools?
Rethink: https://javapro.io/2026/03/05/java-25-and-the-new-age-of-performance-virtual-threads-and-beyond/
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🚀 Call for Contributors – #JVM #Performance #Benchmarks
If you're interested in contributing to the #JVM #Performance #Benchmarks project - an initiative that gained significant traction in the #Java community through our recent #JDK17 and #JDK21 analyses - check out the repo:
🔗 https://github.com/ionutbalosin/jvm-performance-benchmarks
🧵 DM me or open a PR to get started
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@svenruppert In #JabRef, we stick with #JDK21, because the new features of JDK22 do not outweigh the updates the effort of Linux distributions packaging our app with a more recent #JDK. Regarding #JavaFX, we always go with the latest release - and also build with the latest EA version to enable testing by Linux users whether their bugs (mostly with Gnome and i3) are fixed. Our #GitHub #workflow is https://github.com/JabRef/jabref/blob/main/.github/workflows/deployment-jdk-ea.yml.
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Dive into the latest advancements in #Java with our latest article on JDK 21's virtual threads: https://bit.ly/4cEppIA
This analysis compares the performance of virtual threads with Open Liberty's thread pool, focusing on key findings such as throughput, ramp-up times, and memory footprint. While virtual threads offer several advantages, they also show unexpected performance issues, especially in CPU-intensive workloads.
This analysis guides Java developers on when and how to use virtual threads in their applications.
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Comme souvent, quand je bloque sur un sujet, ça devient une page sur mon wiki: https://www.jtips.info/Java/VirtualThread
#jdk #jdk21 #VirtualThreads -
avis partagé !! RT @AlexisHassler Avec le JDK 21, les virtual threads sont séduisants. Par contre au niveau inspection c'est galère. #jdk #jdk21 #VirtualThreads
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Il n'apparaissent pas avec jstack, jconsole ou visualvm.
Avec jcmd, on les voit avec la commande Thread.dump_to_file, mais pas avec Thread.print 🤯.
#jdk #jdk21 #VirtualThreads -
Avec le JDK 21, les virtual threads sont séduisants. Par contre au niveau inspection c'est galère.
#jdk #jdk21 #VirtualThreads -
"JAVA IS HERE TO STAY!"
#Java developers,
Truly one of the most positive and upbeat Java articles I've encountered in a while. Have a read! Please AMPLIFY!
💜☕️ -
First JDK 21 Release Candidate: https://mail.openjdk.org/pipermail/jdk-dev/2023-August/008059.html; downloads: https://jdk.java.net/21/ #JDK21 #Java21 #OpenJDK #TestItNow
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New method to run a virtual thread friendly synchronized block: SyncUtils.runSynchronized(Object, Runnable);
https://github.com/japplis/Virtually:java: #virtualthread #synchronized #java21 #jdk21
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Dive into our in-depth analysis of #JDK21 and get a sneak peek into what's on the horizon for #JDK22.
Read more on #InfoQ: https://bit.ly/3sK6Ctf
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Deep dive analysis: we examine #JDK20 and predict what features may be targeted for #JDK21.
Read on #InfoQ: https://bit.ly/3LgPse6
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@frankdelporte In #JabRef, we needed to have the fix for a workaround of the #64kb limit of #Java - https://bugs.openjdk.org/browse/JDK-8240567. We did not #backport our fix to JDK20, but relied on a sufficient quality of #JDK21 at the time of our release.
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Big news in the #Java world today! The finalisations of #PatternMatching in switch (https://openjdk.org/jeps/441) and #RecordPatterns (https://openjdk.org/jeps/440) are now proposed to target #JDK21. 🥳 (heard it via @nipafx on the bird site)
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There has been some interesting discussion on #JakartaEE 11 and #Java servers over on Twitter. The draft of the spec has been updated to require JDK 17 rather than requiring JDK 21. I agree with the decision. To maximize adoption, JakartaEE must support JDK 17 and optionally JDK 21. Dropping JDK 11 is the best we can hope for right now.
#JakartaEE11 #OpenJDK #OpenSource #JDK21 #JDK17 #JDK11 #WildFly #GlassFish #OpenLiberty #Tomcat #Jetty -
I've created an open-source :java: Java library to make code using virtual-threads easier to write and to read.
Check it out on GitHub: https://github.com/japplis/VirtuallyIt's already in Maven repository.
#java #jdk21 #virtualthreads #projectloom #loom #opensource #apache #java21
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Benchmark JDBC connectors and Java 21 virtual threads https://mariadb.com/resources/blog/benchmark-jdbc-connectors-and-java-21-virtual-threads/
#Java #jdbc #jdk21 -
Season's Greetings with Emojis:
https://groovy.apache.org/blog/seasons-greetings-emoji
Some @ApacheGroovy scripts showing off the newest Emoji support in #jdk21 with inspiration from
Billy Korando's recent Sip of Java post. #groovylang
🎄🎅☃️🎁🌟🎉❄️🍾 -
📣 Diese Woche beim #INNOQTechnologyLunch: Was Dich mit #JDK21 erwartet. Am Mittwoch, 8.11. um 12:15 Uhr live mit @michaelvitz. Jetzt noch anmelden!
👉 https://www.meetup.com/innoq-technology-lunch/events/296987704/ #Java
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#VMOptionsExplorer updated to cover the #JDK21 distros, upcoming #JDK22 stuff, and new JDK-based #GraalVM releases :) #Java #CommandLine https://chriswhocodes.com/hotspot_option_differences.html
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Seit dem letzten LTS-Release ist #JDK21 verfügbar. Welche relevanten Änderungen Dich erwarten, zeigt Dir unser Java-Experte @michaelvitz im nächsten #INNOQTechnologyLunch am 08.11.! Melde Dich jetzt an!
👉 https://www.meetup.com/innoq-technology-lunch/events/296987704/
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All you need to know about Java21 https://unlogged.io/post/all-you-need-to-know-about-java21
#Java #jdk21 -
The Files in JDK 21 https://foojay.io/today/the-files-in-jdk-21/ by Anthony Goubard
#Java #jdk21 -
Once that's done, I'll be able to upgrade to #JDK21 and can start using the cool virtual threads feature!
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The Files in JDK 21
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My Favorite JDK 21 Feature: Javadoc Search URL | Stuart Marks – @stuartmarks https://stuartmarks.wordpress.com/2023/09/22/my-favorite-jdk-21-feature-javadoc-search-url/
#Java #jdk21 -
Have you had a chance to explore all the latest features of #Java21? If not, you might want to check out DevInsideYou's summary video on YouTube.
#UncoverJava with us!
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Have you had a chance to explore all the latest features of #Java21? If not, you might want to check out DevInsideYou's summary video on YouTube.
#UncoverJava with us!
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Have you had a chance to explore all the latest features of #Java21? If not, you might want to check out DevInsideYou's summary video on YouTube.
#UncoverJava with us!
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Have you had a chance to explore all the latest features of #Java21? If not, you might want to check out DevInsideYou's summary video on YouTube.
#UncoverJava with us!
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Have you had a chance to explore all the latest features of #Java21? If not, you might want to check out DevInsideYou's summary video on YouTube.
#UncoverJava with us!
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Project Loom + Quarkus = 💡
Discover the current potential of Project Loom with the help of Quarkus application benchmark! -
Project Loom + Quarkus = 💡
Discover the current potential of Project Loom with the help of Quarkus application benchmark! -
Project Loom + Quarkus = 💡
Discover the current potential of Project Loom with the help of Quarkus application benchmark! -
Project Loom + Quarkus = 💡
Discover the current potential of Project Loom with the help of Quarkus application benchmark! -
Project Loom + Quarkus = 💡
Discover the current potential of Project Loom with the help of Quarkus application benchmark! -
There has been some interesting discussion on #JakartaEE 11 and #Java servers over on Twitter. The draft of the spec has been updated to require JDK 17 rather than requiring JDK 21. I agree with the decision. To maximize adoption, JakartaEE must support JDK 17 and optionally JDK 21. Dropping JDK 11 is the best we can hope for right now.
#JakartaEE11 #OpenJDK #OpenSource #JDK21 #JDK17 #JDK11 #WildFly #GlassFish #OpenLiberty #Tomcat #Jetty -
There has been some interesting discussion on #JakartaEE 11 and #Java servers over on Twitter. The draft of the spec has been updated to require JDK 17 rather than requiring JDK 21. I agree with the decision. To maximize adoption, JakartaEE must support JDK 17 and optionally JDK 21. Dropping JDK 11 is the best we can hope for right now.
#JakartaEE11 #OpenJDK #OpenSource #JDK21 #JDK17 #JDK11 #WildFly #GlassFish #OpenLiberty #Tomcat #Jetty -
There has been some interesting discussion on #JakartaEE 11 and #Java servers over on Twitter. The draft of the spec has been updated to require JDK 17 rather than requiring JDK 21. I agree with the decision. To maximize adoption, JakartaEE must support JDK 17 and optionally JDK 21. Dropping JDK 11 is the best we can hope for right now.
#JakartaEE11 #OpenJDK #OpenSource #JDK21 #JDK17 #JDK11 #WildFly #GlassFish #OpenLiberty #Tomcat #Jetty
