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

It took three months but the first version of my #Java property-based testing library is finally published! https://github.com/josephjunker/presume

Reasons why you might like this:

- MIT licensed, no unusual limitations
- 98% human authored
- Supports both direct and functional styles, which makes it easier to define complex and recursive generator types

Reasons you might not like this:
- Around 1-2% LLM authored (I ran out of steam while fighting with Gradle configuration and fixing/testing bit-twiddling logic in 3 methods)
- Still very new and not remotely at feature parity with more mature solutions
- In dire need of more documentation, which I hope to write in the next couple of weeks.
- Uses what I believe to be a novel shrinking algorithm, which appears to work well but which is not as battle-tested as the Hypothesis approach.

Really interested to hear people's feedback on the code and API!

#FunctionalProgramming #programming

I upgraded #EclipseCollections builds immediately to JDK 28 EA the same day JDK 27 was released because every version of #Java needs Eclipse Collections running with it. Next week is climate week. Are you using Eclipse Collections yet? More features, less waste. 👇
https://donraab.medium.com/save-memory-in-java-by-making-memory-efficiency-your-top-priority-32fe9443eb8d?source=friends_link&sk=5ae3e714963aa9a7e40fa109ebe53283

The existence of Stream Gatherers implies the existence of Stream Hunters

#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.

#Java 27 is like that friend that you haven't seen all summer, and when you finally see them again it's clear that they spent a lot of time in the gym. With many improvements to performance & security, this version of Java seems to be in top shape. More info at https://hanno.codes/2026/09/15/hello-java-27/ 🚀

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

This suprises me a lot. Oracle isn't a group I tend to think of as doing the right thing often, but check out the "OpenJDK Interim Policy on Generative AI".

The final policy remains to be seen, but what's up now is remarkably sensible.

https://openjdk.org/legal/ai

#java #noslop

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

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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/

Java 27 / JDK 27: General Availability: https://mail.openjdk.org/archives/list/jdk-dev@openjdk.org/thread/ORGGLMN75HFEWP7YL3ZLGHLYHVIBJDYT/

Features: https://openjdk.org/projects/jdk/27/

Downloads: https://jdk.java.net/27/

#Java27 #JDK27 #OpenJDK #Java

The #Java 27 launch stream starts in ~45 minutes - see you there!

https://www.youtube.com/watch?v=4V2jooUo8O0

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

Jox - virtual-thread based safe concurrency & streaming in #Java - gets a dedicated flows<->JSON integration module.

NDJSON & streaming-JSON-array is now built-in (since flows release 0.6.0) & waiting for your project!

Plus some bug fixes, of course.

https://github.com/softwaremill/jox

High-Performance Java Persistence by Vlad Mihalcea is on sale on Leanpub! Its suggested price is $34.95; get it for $25.46 with this coupon: https://leanpub.com/high-performance-java-persistence/c/LeanPublishingDaily20260907 #software #java #databases #mysql #oracle #postgresql

Reminder that tonight I'll be talking at EuregJUG in Aachen (Germany) about #EventSourcing in #Java. Come join us!

Details: https://euregjug.dev/#events

Meet our Featured Foojay Authors for September 2026: @maritvandijk and Graeme Robinson!

@frankdelporte introduces two contributors who have been sharing their Java knowledge with the community.

https://foojay.io/today/featured-foojay-authors-for-september-2026/

#Foojay #Java #OpenJDK

Anak Krakatau: Volcano eruption closes six Indonesian airports

More than 150,000 airline passengers are stranded after ash was detected in airspace near Jakarta following the eruptions.

https://www.bbc.com/news/articles/cvgy5k4n07ko

#TopNews #News #Sumatra #Java #AnakKrakatau

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Anak Krakatau: Volcano eruption closes six Indonesian airports

James Gosling, creator of Java, asked by Navin Reddy whether he codes with AI (somewhat cleaned up from the transcript):

"NR And do you use AI to do that?

JG: I have played with AI tools and I mostly find them to be really annoying. I mean, the thing is that I know how to write software. Um, and every time I've used an AI tool, I I look at the software that it generates and for the most part it's just awful. And I care about how evolvable a piece of software is, how reliable it is, you know, how testable it is. And I have yet to find a coding system that works for me cuz it just all you know it all feels like a really great demo, just not ready for prime time.

NR: So do you think there will be a day when AI can reach there?

JG: Oh maybe, kind of, but why? I mean you know in the spectrum of
problems in the so in software engineering, coding has never really been a big problem. The places where there are problems are in like testing. How do you know that this piece of software actually does what you need it to do? That's a really really difficult
problem. That's a problem that is unpleasant. It burns a lot of a lot of time. And you you know, everything I've seen about AI tools just is that they just make hard problem worse. And the the easy problem, yeah, marginally better. But also the easy problem is also the enjoyable problem. So I view AI in part as stealing the fun and making the torture worse. And you know, people go, "Well, you
know, I wrote up this little Swift iPhone app. Doesn't that count?" And it's like, "I don't care, right? I mean, small toy apps like that are are nothing. I mean, I'm, you know, software doesn't get interesting until it's got like until it's like millions of lines, right? You know, until you're doing something like, you know, operating FedEx, right? Right. You know, and you know, some, you know, a place like FedEx, you know, they've got hundreds of thousands of llines of code, probably actually probably millions of lines of code and, you know, 100 000 engineers. I mean, it's a really complicated thing to run a business like Uber or FedEx or UPS or a bank. And building software suites like that
is is where there's difficulty, you know, glossing up, you know, a Swift app to take a survey. Okay, that's fine. But that's not a problem.

NR: That's right. So when you're building a give it business where you have as you mentioned million lines of code and then we have entire team I mean teams of team who is working together to get the one thing that's where it excels

JG: where what excels?

NR: the human

JG: oh yeah I mean when when it when things get complicated you need people. I have not seen a scrap of evidence that the AI coding tools, you know, if if you wanted to build the
next FedEx and you were just going to vibe code the next FedEx, I think you'd be in trouble.

NR: Yeah. Yeah. You never know when you have security flaw and getting hacked.

JG: Yeah. Yeah. O when when your AI tools decide, you know, the best way to be profitable is to steal money from all
your customers. Because you know then people have tried to to to do
experiments like have AI just run a
single vending machine as a business
or do security penetration experiments
inside inside a company and then you
discover that all hell breaks loose, right? Um these these things are a very,
very long way from being deployable at scale with a decent amount of faith that things will work out."

https://youtu.be/LxhZhOOYKTM?t=513

#AI #Java #SoftwareDevelopment #SoftwareEngineering

High-Performance Java Persistence by Vlad Mihalcea is on sale on Leanpub! Its suggested price is $34.95; get it for $25.46 with this coupon: https://leanpub.com/high-performance-java-persistence/c/LeanPublishingDaily20260902 #software #java #databases #mysql #oracle #postgresql

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

Operaton users: in 2027 I'll be back at conferences and user groups to talk about the project — and for user groups I'd love to share the stage with you.

I'll cover governance, internals, what a process engine is even for. You have the interesting part: migrations, the processes you actually run on it.

No polished talk needed, 15 minutes is plenty, and we can keep the client anonymous. If there's a Java user group near you, I'll approach them together with you.

Reply or DM.

#jug #bpmn #java

Java Backend Coding Technology: Less art, more engineering by Sergiy Yevtushenko is the featured book 📖 on Leanpub!

Stop debating code style. Start engineering code.

Link: https://leanpub.com/jbct-book

#Java #Software_engineering #Functional_programming #Software

Java Backend Coding Technology: Less art, more engineering by Sergiy Yevtushenko 📖 on Leanpub!

Stop debating code style. Start engineering code.

Link: https://leanpub.com/jbct-book

#Books #eBooks #LeanPublishing #SelfPublishing #Java

AI-native Tiny Teams — правильный вектор или хайп 2026 года?

В 2026 году из каждого утюга звучит тезис: несколько сильных инженеров с агентами теперь способны делать работу, для которой раньше требовалась полноценная продуктовая команда. Его подогревают прогнозы Сэма Альтмана о «единороге из одного человека» , заголовки о tiny-team moment Кремниевой долины и истории вроде Lovable: $100 млн ARR за восемь месяцев при 45 сотрудниках . В такой подаче tiny team выглядит чуть ли не как будущее разработки и почти панацея. В этом есть частичка правды. AI ускоряет исследование, прототипирование, написание кода, тестов и документации. Полевые исследования фиксируют рост производительности разработчиков , а CircleCI в State of Software Delivery 2026 показывает существенный рост throughput у наиболее эффективных команд.

https://habr.com/ru/articles/1073596/

#tiny_team #маленькие_команды #agile #ai #ainative #java #javascript #менеджмент

NEW! Leanpub Book LAUNCH 🚀 Fullstack Dev 2027 for Java Tech: Practical Java, Spring, Architecture, Security, AI and Modern Backend Engineering by Vincent VAUBAN

https://youtu.be/Q9_egGUv76k

#books #leanpublishing #selfpublishing #Java #SpringBoot #BackendEngineering #JavaDeveloper #SoftwareArchitecture

High-Performance Java Persistence by Vlad Mihalcea is on sale on Leanpub! Its suggested price is $34.95; get it for $25.46 with this coupon: https://leanpub.com/high-performance-java-persistence/c/LeanPublishingDaily20260819 #software #java #databases #mysql #oracle #postgresql

Crafting Spring Boot Starters: Design, build, test and publish auto-configuration libraries on Spring Boot by Wim Deblauwe is the featured book 📖 on Leanpub!

Wonder how the best Spring Boot 4 starters are written, the ones that drop into a project and just feel idiomatic? Want to give your teammates the same head start on new projects?

Link: https://leanpub.com/crafting-spring-boot-starters

#Java

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/LeanPublishingDaily20260814 #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

Very excited to get accepted to @devoxx again this year, this time to do a Deep Dive with my favorite partner in stage crime @piotrprz. #Java #Devoxx

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Email header: [dvbe26] Your proposal has been accepted : Learning modern Java the playful way. Email snippet: Congratulations! Your Proposal Has Been Accepted Dear Marit van Dijk, We're thrilled to inform you that your Deep Dive proposal, "Learning modern Java the playful way", has been accepted for Devoxx Belgium 2026!

A Short Guide to Naming by Tim Ottinger is free with a Leanpub Reader membership! Or you can buy it for $6.50! https://leanpub.com/naming_shortguide #computer_programming #python #javascript #java #web_development #refactoring

Wanna have some #Java fun on the weekend?

0. download https://jdk.java.net/28/ EA 10
1. jshell --enable-preview
2. type `value class Valhallaaaa { }`
(vary number of "a"s according to taste)

#EclipseCollections is the FOSS collections library in #Java with Smalltalk-level productivity. The book, "Eclipse Collections Categorically", is available on Kindle Unlimited. There's a Kindle book offer in the blog below.👇 No FOMO. Get EC and ECC. Mark the date.🗓️
https://donraab.medium.com/level-up-your-programming-game-with-a-java-book-and-smalltalk-3c4c9bffbb49?source=friends_link&sk=d507f1de2db9a1db224ddcb539df6e78