Rafael Winterhalter

Wow, TIL that LISTEN/NOTIFY in Postgres requires a global lock when committing transactions issuing a NOTIFY. Consider listening to the WAL via logical replication as an alternative with no impact on the write path.

www.recall.ai/blog/postgre...

"Towards a JSON API for the JDK"

New proposal on the core-libs-dev list for adding a basic JSON API to #Java. That would be a more than welcome addition, in particular considering the envisioned usage once member patterns will be available. Make it So 🤩!

mail.openjdk.org/pipermail/co...

Post von Peter Schaar: #Microsoft hat auf Anordnung von Donald #Trump seine Dienste für den Internationalen Strafgerichtshof gesperrt. Der Staatsanwalt des #ICC hat keinen Zugriff auf seine #email. Quelle: AP

Und das, liebe Kinder, ist der Grund, warum man sich bei existenziell wichtigen Werkzeugen am besten mindestens parallel auf lokal gehostete Open Source Lösungen stützt. Wenn #Trump anfängt, die US-Tech-Konzerne in Waffen zu verwandeln, wird es finster. #KritIs

Here's something I want but am too lazy to build: Take a picture of a huge pile of Lego, and get me a classification of what brick belongs to which set. The manual equivalent is quite something.

We just integrated a performance improvement to Java String that will provide a ~10x performance boost in some applications where Strings are used as keys and where the associated values are constant foldable. This will make JDK 25 faster.

github.com/openjdk/jdk/...

Fastpass lohnt sich übrigens nur wenn du alles fahren willst. Die Sachen für die kleinsten haben wenig Schlangen. Und er gilt nur einmal für Fahrgeschäft. Nimm ein billiges Disneyhotel, dann darfst du eine Stunde früher, und in der Stunde kannst du alles fahren ohne warten.

Viel Glück. Ich bin mit meiner Tochter 2.5 Stunden angestanden, um die Prinzessinnen zu treffen. Keine Übertreibung. Aber sie hat geduldig gewartet. Buch mitnehmen, Pläne dynamisch nach Wartezeiten in der App anpassen, Ohrstöpsel da überall im Park Disneymusik gespielt wird. Urlaub danach planen!

Do I understand it correctly that the central-publishing-maven-plugin intends to replace the nexus-staging-maven-plugin? But not necessarily the maven-release-plugin? How would one otherwise handle tagging in Git? I'm confused.

We’d love to see more talk proposals rolling in for #JavaZone2025!

Got something interesting to share? Big or small, wild or practical — we want to hear it! 🙌

2025.javazone.no/en/...

Dynamically added annotation is not visible to Kotlin reflection I am working with a Java agent that is adding an annotation dynamically to a class file. When this class file is a Kotlin class, and if it is investigated by Kotlin reflection, the annotation does ...

My first question on Stack Overflow in four years. Any ideas why Kotlin reflect cannot observe an annotation if a class's "flag" is 6 and not 7? stackoverflow.com/questions/79...

Dynamicly added annotations are not visible I am trying to add support for kotest for a test intelligence tool. To do so, I need to be able to add the Ignored annotation to classes dynamically using a Java agent, but the annotation seems to not...

What frustrates me most about Kotlin and Scala is their closed world perspective on their own tooling. Java byte code is well-defined and easy to interop. It should not be hard to add an annotation to a class, but with Kotlin it somehow is: discuss.kotlinlang.org/t/dynamicly-...

First of all, they all confirmed what I thought. The majority of comics creators travel to the USA on an ESTA — "The short is that almost everyone just goes in on a ESTA. "That's the electronic tourist visa, easy to apply for, valid for two years. Things are slightly different for Canada, they have their own version of an ESTA, and anecdotal reports say that some Canadian shows implicitly include visa requirements in the guest information. But when you're going in on a tourist visa like the ESTA, the Immigration and Border Control can and will interrogate you about what you're visiting for. And if they have even the slightest idea that you're working whilst you're there, they can and will deny you entry and/or detain you. The problem now is that all those previously accepted and overlooked things that can be classed as 'working', such as Becky's chores for board or a hotel room for a comics convention in return for your appearance, could well see you denied and/or detained.

All folks who speak at conferences should read this and think long and hard about whether they want to risk speak in the US in the future.

Also anyone who works while traveling.
comicon.com/2025/03/18/f...

Catch of the day: The Kafka client for Java logs a bunch of things on info level that likely should be debug, which resulted in Splunk logging for millions of crowns of repetitive things nobody needs. I argue that libraries should never log anything on the info level.

@vonderleyen.ec.europa.eu Here’s a potent idea for Europe: allow member states to charge VAT on online ads served within their borders. Why should platforms like Meta earn ad revenue from EU audiences without paying VAT locally?

One of my most radical political positions is that online ads should be treated like addictive substances (alcohol) and have something like 100% VAT.

This doesn’t exist because governments can’t technically charge VAT for online ads served in the country.

Add support for including module-info in Mockito. by raphw · Pull Request #3597 · mockito/mockito Adds module-info.java to describe module descriptor.

Finally found the time to make Mockito a proper named module: github.com/mockito/mock...

jdk.unsupported can still be used, but if Mockito is added as an agent and the package is not imported elsewhere, it still works fully without it on official API in the instrumentation API.

🎓 We are so happy that our great friend Rafael Winterhalter (@rafaelcodes.bsky.social) will be back to Sofia and will give his talk: "Exploring the Java Class File API"!

🗓️ 14-15 May, 2025
📍 Sofia, Bulgaria 🇧🇬

🎫 Grab your pass: jprime.io/tickets

Dette kan du gjøre for å støtte Ukraina: Trykk på «republiser-knappen» - slik at flest mulig får vite om den politiske markeringen på mandag.

💘 Roses are red, commits turn green, JavaZone’s stage is calling—be seen! 💘

Every bug fix, late-night hack, and production horror story deserves an audience.

Your code has a story—share it at #JavaZone2025!
💌 talks.javazone.no/
ℹ️ https://2025.javazone.no/en/speaker

#JavaZone

GitHub - raphw/asm-jdk-bridge Contribute to raphw/asm-jdk-bridge development by creating an account on GitHub.

github.com/raphw/asm-jd...

22 stars and counting!

It's been around since Java 11. But I do not think the JVM makes use of it yet. Like invokedynamic binds dynamic calls, it binds dynamic fixed values.

So Apple.tv has no Android app, but if you open it in the browser, it automatically routes to /us. This I have to replace with /no manually, otherwise the page crashes loading a language bundle for a popup. Did someone make this page in Dreamweaver? Severance better be a good show.

Release Byte Buddy 1.17.0 · raphw/byte-buddy Assure that implicit choice for class reader and class writer are always symmetric with regard to internal representation. Retrofit MemberSubstitution to also allow for intercepting invokedynamic i...

It took another release to iron out some issues with the Class File API Integration. Also, Byte Buddy now offers improved support for using constantdynamic in instrumentation, with fallback to invokedynamic if not yet available. github.com/raphw/byte-b...

I made a mistake in my changed build and 1.16.1 now offers the actual support for this.

I tested a bunch and it's very hard to pin. For most real life applications, the overhead is negligible. But for a minimal example, it's obvious. There's more object allocation, and of course class loading. But class manipulations are not normally on any applications performance critical path.

Release Byte Buddy 1.16.0 · raphw/byte-buddy Allow for erasure of types of bootstrapped methods in Advice within instrumented class. Rework Advice post-processing to allow for erasure of bootstrapped methods. Fix missing application of hashCo...

Byte Buddy 1.16.0 now integrates the Java Class File API and is therefore compatible with any future JDK that retains its instruction set, without activating the experimental flag. github.com/raphw/byte-b...

Next step: integration into Byte Buddy.

GitHub - raphw/asm-jdk-bridge Contribute to raphw/asm-jdk-bridge development by creating an account on GitHub.

Finally released the first version of my ASM-JDK bridge. It's as close as can be a drop-in replacement for ASM's ClassReader and ClassWriter where the alternative implementations use the JDK class file API in the JDK, and allow for limited forward compatibility. github.com/raphw/asm-jd...

move it to META-INF/versions/9. Works just fine and then shade is too dumb to pick it up.