Watching the #Java #Java25 #release stream with friends @DJGummikuh @FrVaBe @oli 👋 @nipafx @ammbra1508 @Sharat_Chander

Also seeing Dr. Depracator @stuartmarks fries are in the making ofc 😅

Alt...

Automatic portrait with DJ Gummikuh, Franz and Olli in the background

Java 25 / JDK 25: General Availability: https://mail.openjdk.org/pipermail/jdk-dev/2025-September/010483.html

Features: https://openjdk.org/projects/jdk/25/

Downloads: https://jdk.java.net/25/

#Java25 #JDK25 #OpenJDK #Java

Java 25’s new CPU-time profiler

More than three years in the making, with a concerted effort starting last year, my CPU-time profiler landed in Java with OpenJDK 25. It’s an experimental new profiler/method sampler that helps you find performance issues in your code, having distinct advantages over the current sampler. This is what this week’s and next week’s blog posts are all about. This week, I will cov

https://www.osnews.com/story/143329/java-25s-new-cpu-time-profiler/

#Java

Gotta wake up early here on the West Coast for the #Java 25 release live stream on Sept 16!

Join the Java developer relations team (and some special guests, such as me!) to find out what's in #JDK25, what's new since JDK 21, and what's coming in 2026.

https://dev.java/community/java-25-launch/

I created a toy #Java project using #JSpecify

This is what you can express (among others):

https://codeberg.org/michael-simons/javaspektrum/src/commit/14281628ac054dfcaed2c4e3bf951f3329da6b49/jspecify/src/main/java/ac/simons/javaspektrum/jspecify/Calculator.java#L9

One required argument, one optional argument with optional content.

To check it, you need to have #Nullaway https://codeberg.org/michael-simons/javaspektrum/src/commit/14281628ac054dfcaed2c4e3bf951f3329da6b49/jspecify/pom.xml#L319-L341

Build with mvn package -DwithNullaway, to see compile fail (there's test passing null).

Nullaway and modern Java is fun: https://codeberg.org/michael-simons/javaspektrum/src/commit/14281628ac054dfcaed2c4e3bf951f3329da6b49/jspecify/.mvn/jvm.config#L5-L12

Also added #Kotlin code: You can remove the package, and see how it affects what Kotlin sees.

Join ACME Soft's API guild for a rundown of all JDK API additions between #Java 21 and 25 - scoped values, stream gatherers, class-file API, FFM, Javadoc, previews features:

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

Next Tuesday (Sep 16th), #Java 25 will be released and we'll celebrate with a 4-hour live stream on the Java YouTube channel, starting at 15:00 UTC. There will be code, guests, jokes, gaffes, maybe even cake. 😀 (I hear there will be no cake. 😭)

Come join us: https://www.youtube.com/live/duIceCXObrA

🚀 Java devs, think you know every edge case?

Join author Jeanne Boyarsky on Sept 23 @ 6:30pm for real-world Java "gotchas" from Java 17–25 (and beyond)! Sharpen your instincts & avoid hidden pitfalls.

Sign up: javasig.com
#Java #Java25 #JUG #DevCommunity

Wir suchen in unserer Abteilung Verstärkung im #Java-Umfeld: coole Kolleg*innen, sicheres Umfeld, Möglichkeit etwas zu bewegen.

Meldet euch gerne bei Fragen bei mir. Würde mich über nicht-männliche Kolleg*innen besonders freuen!

Java Software Developer (m/w/d) | ÖRAG Rechtsschutzversicherung
https://www.oerag.de/karriere/jobs/java-software-developer-m-w-d.html

#GetHired #FediHire

Modern Thymeleaf Bundle https://leanpub.com/b/modern-thymeleaf-bundle by Wim Deblauwe wimdeblauwe@mastodon.social is the featured bundle on the Leanpub homepage! https://leanpub.com #Java #Html #WebDevelopment #Software #Javascript #books #ebooks

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

Dive into the world of modern web development with our special bundle, featuring two essential guides: Taming Thymeleaf and Modern frontends with htmx.

Find it on Leanpub!

Going to the "Commit Your Code" conference (Dallas, TX, USA)? Come to my talk: "Testable Architecture: Keep 'em Separated" in the #Java track on September 25 at 3:30pm in the "Blue" room.

https://www.commityourcode.com #CommitYourCode

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Headshot of Ted M. Young, with the text "I'm speaking at the Commit Your Code Conference for Charity, September 25-26, Dallas, TX"

💥Emerging threats demand stronger defenses for #Java apps!

Learn how to adapt runtime security settings and prepare for post-quantum cryptography from the latest video from our #RoadTo25 series: https://youtu.be/xeOuEqorY8g

#JDK25 #OpenJDK #SecurityUpdate #Security

Testing Spring Boot Applications Demystified by Philip Riecks is free with a Leanpub Reader membership! Or you can buy it for $9.00! http://leanpub.com/testing-spring-boot-applications-demystified #Java #Testing #AutomatedSoftwareTesting

💡 In #Java you can implement an LRU cache with evict-first semantics using LinkedHashMap... if you think outside the box (see evictLruContextIfNecessary()). 📦

https://github.com/spring-projects/spring-framework/commit/ca62119cb33e7805a080984b60902a4f0895d707

Guess you could say I had a little fun with #Spring and Java this week. 😎

Video for my presentation at #JavaZone
is already out.
Be more productive with #IntelliJIDEA
https://vimeo.com/1115439883

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/sh/oUp2MfFU #Software #ComputerProgramming #Java #Kotlin #SoftwareArchitecture #SoftwareEngineering

Big Kotlin pack https://leanpub.com/b/kotlin_mm by Marcin Moskała is the featured bundle of ebooks 📚 on the Leanpub homepage! https://leanpub.com #Kotlin #Android #Java #ComputerProgramming #Engineering

The following 5 books are included in this bundle...
Kotlin Essentials, Functional Kotlin, Advanced Kotlin, Kotlin Coroutines, and Effective Kotlin

Find it on Leanpub!

Always a pleasure to listen to @JosePaumard speaking about changes in #Java after JDK21❣️

#ProjectAmber #ProjectLoom #JDK25 #JavaZone2025

Testing Spring Boot Applications Demystified by Philip Riecks is free with a Leanpub Reader membership! Or you can buy it for $9.00! http://leanpub.com/testing-spring-boot-applications-demystified #Java #Testing #AutomatedSoftwareTesting

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/sh/7wag0x60 #Software #ComputerProgramming #Java #Kotlin #SoftwareArchitecture #SoftwareEngineering

The call for papers for @NLJUG #JFall closes next Monday Sept 1st. Last chance to get your proposals in for the best one-day #Java conference! Go go go 🚀
https://sessionize.com/jfall25/

Folks, do not miss your chance to speak at the best 1 day conference of this autumn 💥!

#JFall CFP closes on Monday, September 1st 2025 and we always welcome fresh perspectives and topics 🎉!

https://sessionize.com/jfall25/

#java #conference #callforpapers

Testing Spring Boot Applications Demystified by Philip Riecks is free with a Leanpub Reader membership! Or you can buy it for $9.00! http://leanpub.com/testing-spring-boot-applications-demystified #Java #Testing #AutomatedSoftwareTesting

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/sh/x1AlUOPv #Software #ComputerProgramming #Java #Kotlin #SoftwareArchitecture #SoftwareEngineering

Is #Agile failing your teams? Maybe it’s not the method—but how you use it. Marin Niehues outlines why context, psychological safety, and clarity matter more than any framework.

Gain perspective and real results: https://javapro.io/2025/07/17/agile-scrum-kanban-and-the-lies-we-tell-ourselves-about-creating-value/

#Scrum #Kanban #Leadership #Java

Not only can you download JDK EA versions from inside IntelliJ IDEA
- It will also tell you when a new version is available!

How to download #Java JDKs from #IntelliJIDEA: https://www.youtube.com/live/_nt-z0FS3tM?feature=shared&t=554

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Top right corner of IntelliJ IDEA with the suggestion: Update JDK "25" to Oracle OpenJDK Early-Access 25+36-3489 (aarch 64)

Testing Spring Boot Applications Demystified by Philip Riecks is free with a Leanpub Reader membership! Or you can buy it for $9.00! http://leanpub.com/testing-spring-boot-applications-demystified #Java #Testing #AutomatedSoftwareTesting

#Scrum, #Kanban, SAFe—popular #Frameworks often promise clarity and speed. Yet many teams still face stalled delivery and low trust. Marin Niehues shares insights on why structure alone isn’t enough.

Full #JAVAPRO article: https://javapro.io/2025/07/09/the-framework-illusion-lets-fix-your-value-delivery/

#DevOps #Agile #Java

Schöne JUG Mainz mit @sippsack zum Thema Value Objects gehabt. Tolles Thema, freue mich auf das was da kommt.

Was mich auch gefreut hat ist, dass das heute unser erstes Treffen war das wir nicht auf Meetup sondern im Fediverse über Mobilizon angekündigt und geplant haben und mehr Leute da waren als die letzten Male. Lag sicher auch am Thema und an Falk, aber trotzdem schön. Folgt uns auf @jug_mainz um über neue Events informiert zu werden! #mainz #java

💥Did you know that final is…not so final?

Checkout the first video from #JVMLS 2025 and find out what steps are being considered by #Java to address final’s limitations.

https://inside.java/2025/08/12/jvmls-final-to-immutable

Daily Stand-ups & Retros lösen keine Kulturprobleme. Marin Niehues macht klar, warum nicht #Scrum oder #Kanban scheitern – sondern Organisationen ohne Feedbackkultur & Mut zur Veränderung.

Wie echte Lernkultur entsteht: https://javapro.io/de/agile-scrum-kanban-und-die-maerchen-die-wir-uns-ueber-wertschoepfung-erzaehlen/

#Agile #Java #ProjectManagement

Testing Spring Boot Applications Demystified by Philip Riecks is free with a Leanpub Reader membership! Or you can buy it for $9.00! http://leanpub.com/testing-spring-boot-applications-demystified #Java #Testing #AutomatedSoftwareTesting

Jetpack Compose internals by Jorge Castillo is on sale on Leanpub! Its suggested price is $35.00; get it for $20.00 with this coupon: https://leanpub.com/sh/LnWAwBHU #Software #ComputerProgramming #Java #Kotlin #SoftwareArchitecture #SoftwareEngineering

Java’s Not Gone, It’s Just Hiding in Plain Sight

From powering Minecraft on the PlayStation to driving high-performance financial systems, Java remains a quiet force behind technologies we use every day.
Our latest blog takes a thoughtful look at how this long-standing language continues to make an impact, sometimes where you’d least expect it.

👉 Read more:
https://freebsdfoundation.org/blog/from-minecraft-to-markets-java-hiding-in-plain-sight/

#FreeBSD #Java #OpenSource #TechTrends #Programming #SoftwareDevelopment

@odrotbohm Aaaah I actually thought well, I was in Springweg too, this year. This is Amsterdam, right? And Lombok is ofc close to #Java eiland

Jetpack Compose internals by Jorge Castillo is on sale on Leanpub! Its suggested price is $35.00; get it for $20.00 with this coupon: https://leanpub.com/sh/2Vi0wbPl #Software #ComputerProgramming #Java #Kotlin #SoftwareArchitecture #SoftwareEngineering

Testing Spring Boot Applications Demystified by Philip Riecks is free with a Leanpub Reader membership! Or you can buy it for $9.00! http://leanpub.com/testing-spring-boot-applications-demystified #Java #Testing #AutomatedSoftwareTesting