It's finally here: https://kittylyst.com/posts/java-in-a-nutshell-9th-ed-released/ - #Java in a Nutshell 9 is out! #Programming #software #softwaredevelopment

On Java 8 by Bruce Eckel is on sale on Leanpub! Its suggested price is $47.00; get it for $29.60 with this coupon: https://leanpub.com/onjava8/c/LeanPublishingDaily20261015 #java

Building a container image is no big deal: one command. Cat Edelveis (Bellsoft) on why a working image isn't a production image, and what you still have to harden. Full episode: https://www.youtube.com/live/xqbMKNL40Vk #Java #Buildpacks

New on Foojay: Lottie4J 1.2.7 focuses fully on performance, with no new features. @frankdelporte explains how images are now decoded once and track mattes reuse canvases and buffers. In the profiling run, GC pauses dropped from 531 to 177.

Note: use 1.2.8 instead, as it fixes a regression with track mattes of different sizes.

https://foojay.io/today/lottie4j-1-2-7-a-performance-release/

#Java #JavaFX #Lottie

#Variance in Generics, Phantom and Existential types with #Java and #Scala

https://blog.scottlogic.com/2025/02/17/variance-in-java-and-scala.html

jOOQ founder Lukas Eder on the part nobody notices: you're not really writing SQL, you're building the expression tree that generates it. Every SQL query is dynamic, even when it doesn't look like it. #jOOQ #Java #SQL Full episode: https://www.youtube.com/live/F3lKcMijb6k

In @foojay #Podcast 103, I talked with @debugagent and Dmitry Moskalyuk about reflection in #Java. Runtime reflection is a quiet tax on the JVM, and it is easy to stop noticing it until you go looking for where your CPU is going. Two teams from very different corners of the ecosystem went looking and landed on the same answer: move the work to build time.

Available in your favorite podcast app and on YouTube:

https://www.youtube.com/watch?v=smHzWWNOyMU

New on Foojay Today @frankdelporte explains what is coming in @pi4j V5. There is no release date yet, but main already has about 300 commits.

Highlights: a leaner core, one clear way to create IO instances, fallback to mocks, a new ParallelPort IO type, and RISC-V support.

Snapshots are available to try. Feedback welcome.

https://foojay.io/today/pi4j-v5-work-in-progress/

#Java #Pi4J #RaspberryPi

🚨 Release Alert: TestLens CLI 1.1.0 is out 🚨

Last week we shipped the TestLens CLI: run `testlens pr <number>` in your terminal and see which tests failed, where they ran, and why. No scrolling through GitHub Actions logs.

Version 1.1.0 makes the terminal UI faster to work with:

🔎 Press / to fuzzy-search the test table.
✨ The TUI now supports hjkl navigation, alongside the arrow keys.

Read the announcement on our blog:
https://testlens.app/blog/2026/10/16/testlens-cli-1-1/?utm_source=mastodon&utm_medium=social-media-post&utm_campaign=cli-1-1

#java #gradle #maven #github #release

Get #IntelliJIDEA smartness for #Java and #Kotlin in #vscode and #cursor; the LSP can be used by humans and agents, producing faster, more deterministic results, consuming fewer tokens.
https://blog.jetbrains.com/idea/2026/10/intellij-idea-s-java-and-kotlin-for-cursor-and-vs-code-hits-1-0/

Die #BaselOne26 läuft! 🚀

Heute sind die Workshops bereits in vollem Gange – morgen folgt der grosse Konferenztag mit mehr als 30 Talks.

Kurzfristig neu im Programm: @patbaumgartner spricht über „From Chaos to Cohesion: Building Modular Monoliths in the Real World“ – mit Spring Modulith, klaren Grenzen, Tests und Doku statt Big-Bang-Rewrite. 💡

👉 Programm: https://baselone.org/#programm
🎟️ Tickets: https://eventfrog.ch/BaselOne26

#BaselOne #Java #SoftwareArchitecture

Alt...

BaselOne 2026 Social Banner für den Talk „From Chaos to Cohesion: Building Modular Monoliths in the Real World“ von Patrick Baumgartner. Zu sehen sind der BaselOne-Schriftzug, ein Porträt des Speakers sowie die stilisierte Basler Skyline. Die Veranstaltung findet am 14. und 15. Oktober 2026 in der Markthalle Basel statt.

Maybe you shouldn’t submit a talk.
Maybe that colleague who somehow explains #virtual threads better than the #documentation should.
Or maybe you both just belong on our stage!
Tag someone who belongs on a #JCON2027 cinema screen!

➡️ https://sessionize.com/jcon-europe-2027
#CFP #Java #JCON #Conference

Introducing the TestLens CLI!

🥱 Tiered of scrolling through GitHub Actions logs to get to the bottom of a test failure?

🤝 With a single command, the new TestLens CLI gives access to your test results right from the command line!

👀 Check out our latest blog post and get it today! https://testlens.app/blog/2026/10/09/testlens-cli/?utm_source=mastodon&utm_medium=social-media-post&utm_campaign=cli

#gradle #maven #java #testing #tui #cli

It’s been a busy week in the #Java ecosystem!

Highlights include:
➤ The GA releases of JobRunr 9.0 and OpenXava 8.0; point releases for Quarkus, Micronaut, LangChain4j, Eclipse JNoSQL; ADK for Java and ADK for Kotlin; and introducing Lathe, a new Java language server.

🔗 #InfoQ News Roundup: https://www.infoq.com/news/2026/10/java-news-roundup-sep28-2026/

#SoftwareDevelopment

I have been venting a lot about #JDBC driver in that context, and I want to say something positive: The Clickhouse one is so well documented:

https://clickhouse.com/docs/integrations/language-clients/java/jdbc

especially wrt type mapping (super helpful), and than I haven't even covered the fantastic page on date / date time (some people will relate to that very hard):

https://clickhouse.com/docs/integrations/language-clients/java/jdbc

#Clickhouse #Java #JDBC #SQL #VirtualGraph

Modern Thymeleaf Bundle by Wim Deblauwe 📚 on Leanpub!

? Exclusive Offer: Master Spring Boot & Thymeleaf Like a Pro!

Link: https://leanpub.com/b/modern-thymeleaf-bundle

#Books #eBooks #LeanPublishing #SelfPublishing #Java

Stratospheric (Radiant Reader (eBook)) by Tom Hombergs, Björn Wilmsmann, and Philip Riecks is on sale on Leanpub! Its suggested price is $39.00; get it for $29.25 with this coupon: https://leanpub.com/stratospheric/c/LeanPublishingDaily20260929 #java #amazon_web_services

On my way home from GOTO Copenhagen.
A busy few days with three sessions! Joining @kevlin for "Watch your language" along @jonskeet @tastapod and others, presenting with @piotrprz and finally a #Java panel with Piotr and @laurspilca. Tired but happy!

Writing a book about Spring Boot 4 reinvigorated his love of coding. He's shipping a new Spring AI Agents MD starter to the community soon. #SpringBoot #SpringAI #Java

Big Kotlin pack by Marcin Moskała is the featured bundle of ebooks 📚 on Leanpub!

Link: https://leanpub.com/b/kotlin_mm

#Kotlin #Android #Java #Computer_programming #Engineering

Taming Thymeleaf: Practical Guide to building a web application with Spring Boot and Thymeleaf by Wim Deblauwe is the featured book 📖 on Leanpub!

Learn to build a production-grade web application with Spring Boot and Thymeleaf with this book.

Link: https://leanpub.com/taming-thymeleaf

#Java #Html #Web_development #Software

This week I will be busy at GOTO CPH:
I will be on stage with @kevlin and several other to talk about programming languages, @piotrprz & I will speak about Learning modern Java the playful way and finally a #Java Panel with @ixchelruiz, @laurspilca, Piotr and me.

Alt...

Piotr Przybyl and Marit van Dijk on stage at Devoxx Poland 2025. Both are wearing white lab coats and simultaneously adding a pen to the pocket.

Alt...

Marit van Dijk and Kevlin Henney at Voxxed Days CERN 2026.

Jetpack Compose internals by Jorge Castillo is on sale on Leanpub! Its suggested price is $49.99; get it for $17.50 with this coupon: https://leanpub.com/composeinternals/c/LeanPublishingDaily20260922 #software #computer_programming #java #kotlin #software_architecture

Use @sdkman support in #IntelliJIDEA to set your Project JDK.

#Java #Java27 #SDKMAN! #IntelliJIDEATips

Java 27 released

Speaking of unsexy programming, we've got a new Java release.

Featuring thousands of performance, stability, security, and productivity improvements, Java 27 (Oracle JDK 27) provides a strong foundation for continued Java innovation. To help organizations prepare for more secure communications in a post-quantum world, Java 27 advances its post-quantum cryptography (PQC) capabilities with hybrid key ex

https://www.osnews.com/story/145987/java-27-released/

#Java

Zwischen primitiven Typen und Klassen klafft in Java seit Jahrzehnten eine Lücke.

Auf der #BaselOne26 zeigt @sippsack, wie Project Valhalla mit Value Classes ansetzt: kompaktere Datenstrukturen, weniger Object Overhead und bessere Datenlokalität – spannend für Embeddings, Vektoren & Co.

Programm u.a. mit @gazebo_c, @martinfrancois & Bertrand Delacrétaz: https://baselone.org/#programm

⏳ Nur noch 4 Wochen – Jetzt Tickets sichern: https://eventfrog.ch/BaselOne26

#Java #ProjectValhalla #BaselOne

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BaselOne26-Visual zum Vortrag von Falk Sippach über Value Classes in Java. In der Mitte ist ein Porträt des Speakers zu sehen. Der Hintergrund zeigt den violett-roten BaselOne-Farbverlauf mit stilisierter Basler Skyline. Der Vortrag findet im Rahmen der BaselOne am 14./15. Oktober 2026 in der Markthalle Basel statt.

Download #Java27 from your favorite vendor from inside #IntelliJIDEA
JDKs are added as they appear. #Java

Never spoken at #JCON before?

Good news: previous conference talks aren't required.
We judge the talk, not the résumé. If you have useful #experience, a strong #idea or something the #Java community can learn from, we want to hear it.

➡️ https://sessionize.com/jcon-europe-2027

#JCON2027

Do you want to get started with the just released #Java 27? Download the JDK from inside #IntelliJIDEA

Alt...

IntelliJ IDEA Project Structure popup with the Download JDK popup (which you can open from the SDK pull down menu) showing the Version: 27 and Vendor: Oracle OpenJDK 27.

With #Java 27 just released, here is a quick overview of what it brings, how #IntelliJIDEA supports the latest Java features and even how Java 27 helps IntelliJ IDEA.

https://blog.jetbrains.com/idea/2026/09/java-27-in-intellij-idea/

I have had a tab open with the JavaCard spec for a few weeks and I continue to resist the temptation to write a JavaCard implementation for CHERIoT. Please be impressed. I honestly didn't think I'd manage this long.

#CHERI #CHERIoT #JavaCard #Java

RE: https://mastodon.social/@ammbra1508/117271259887335325

Happy #Java release day to all who celebrate! 🥳
What feature(s) are you most excited about?

Ted M. Young boosted

Ana-Maria Mihalceanu » 🌐 2026-09-14
@ammbra1508@mastodon.social

Java 27 is almost here❣️

Join us tomorrow at 15:00 UTC for a 3 hour livestream featuring live coding, technical deep dives and conversations with the guests from the JDK team and community.

See you live 👇
https://www.youtube.com/live/4V2jooUo8O0

#Java #JDK27 #AI

Java 27 is almost here❣️

Join us tomorrow at 15:00 UTC for a 3 hour livestream featuring live coding, technical deep dives and conversations with the guests from the JDK team and community.

See you live 👇
https://www.youtube.com/live/4V2jooUo8O0

#Java #JDK27 #AI

Which user groups/meetups should I speak at in November that are near/in Berlin/Potsdam? (About #Java and #EventSourcing and #DomainDrivenDesign)

Would be before or after Agile Testing Days. Check https://jittertravel.com/calendar for where I’ll be and when.

New podcast episode is out!

@frankdelporte and @speakjava talk about Java 27 and what it means for your applications: smaller heap sizes, better default settings, and a look at where Java 28 with Project Valhalla is heading.

Check it out:
https://foojay.io/today/foojay-podcast-101/

#Java #Podcast #Java27