Michael Vitz
banner
michael.vitz.me
Michael Vitz
@michael.vitz.me
Java Champion working as Senior Consultant at INNOQ
@seb.deleuze.fr and @snicoll.be do you know if jspecify/or nullaway allows a way to declare that a variable that is annotated with @PathVariable(required = false) and is not an Optional is automatically marked as Nullable?
October 24, 2025 at 11:25 AM
Watching something I once really liked slowly but surely fall apart makes me so sad. 😔
October 17, 2025 at 9:24 AM
On my way home after a wonderful @baselone.bsky.social. The slides from my talk “Keep your dependencies up to date with @renovatebot.com” are already available at www.innoq.com/en/talks/202.... Thanks for having me and all the good conversations.
Keep your dependencies up to date with Renovate
Applications and software in general these days are built on the shoulder of giants, relying on frameworks and myriad third-party libraries. However, with the benefits of using these frameworks and li...
www.innoq.com
October 17, 2025 at 7:43 AM
If you visited my talk, “What? That's possible in #Java?” at @devoxx.com last week or already watched the recording on YouTube (www.youtube.com/watch?v=DfeC...), you can now also check out the examples on GitHub (github.com/mvitz/wat-ja...).
Wat? That’s possible in Java? by Michael Vitz
YouTube video by Devoxx
www.youtube.com
October 17, 2025 at 7:33 AM
Meine Kollegin Sonja hat einen wunderbaren Post über Buttons, Links und die Magie von HTML geschrieben: www.innoq.com/de/blog/2025...
Klare Leseempfehlung für alle, die direkt oder indirekt mit HTML in Berührung kommen.
Buttons, Links und die Magie von HTML
Web Accessibility ist nicht nur eine trockene gesetzliche Anforderung: Für viele bedeutet sie die Möglichkeit, überhaupt am digitalen Leben teilzunehmen. Web Accessibility ist aber auch ein Fass, in d...
www.innoq.com
March 27, 2025 at 12:41 PM
blogs.oracle.com/java/post/th... by @sharatchander.bsky.social is a great overview of almost everything that is included for #java and the JVM in JDK 24.
blogs.oracle.com
March 19, 2025 at 8:28 AM
Reposted by Michael Vitz
#Java developers, #JavaOne is 5 DAYS AWAY! If you're part of #JavaUserGroup, use discount code J1D100_JUG to save $100 registration (public sector not included). Don't miss the conference that started it all! javaone.com
March 13, 2025 at 5:27 PM
Just claiming my identity at Keyoxide with proof: $argon2id$v=19$m=64,t=512,p=2$zlWD+ZRdgX97zzwwH9VGWw$KA9HkwSwwn7LuzxuQ9JoWg
Michael Vitz - Keyoxide
Modern and secure platform to manage a decentralized identity based on cryptographic keys
keyoxide.org
February 17, 2025 at 2:20 PM
Recently, someone asked if I know companies that work within the core #java universe (like JDK vendors, tooling, no pure consulting) and are willing to hire people from Germany who can work from home. As I have no clue, please ping me if that matches your company. Please don't hesitate to repost.
January 22, 2025 at 2:52 PM
Reposted by Michael Vitz
My friend @meistermeier.com wrote a nice post about #SpringBoot #Actuator meistermeier.com/2024/12/28/S... and why it is *not* insecure by default, in contrast what the folks at CCC implied. TL;DR: #VW apparently enabled it on purpose, opted out of security and went straight to production.
Gerrit's Blog
meistermeier.com
December 29, 2024 at 9:28 AM
My latest magazine article 🇩🇪 about integrating #LLM into #Java based #Spring applications via #SpringAI can now be read online at www.innoq.com/de/articles/... It’s mostly about the basics but shows some RAG, Function Calling and Observability, too. Hope you enjoy it.
LLMs mit Spring AI integrieren
Die gesamte Welt spricht aktuell über Generative KI und Large Language Models (LLMs). Und auch wenn ich persönlich das Thema aktuell als zu sehr gehypt empfinde, sollten wir solche Trends nicht komple...
www.innoq.com
December 19, 2024 at 8:52 AM
If you're curious about #java and the #jdk ecosystem, you should attend jchampionsconf.com. This is a @javachampions.bsky.social run online conference split over four days. Of course, everyone can attend for free, although you have to register in advance. Hope to “see” you there.
JChampions Conference
Conference organized by Java Champions and featuring Java Champions in the presentations.
jchampionsconf.com
December 17, 2024 at 8:40 PM
After upgrading to #SpringBoot 3.4 and using the new webjars-locator-lite our internal WebJar package wasn't working any more. Because others may stumble over that problem too, I wrote a short post about why that happened and what you have to do to fix that: www.innoq.com/en/blog/2024...
Use webjars-locator-lite with internal WebJars
Switching to the new webjars-locator-lite, e.g. by following the Spring Boot 3.4 Release Notes, may result in errors when loading your internal WebJars. This post explains why that is the case and wha...
www.innoq.com
November 26, 2024 at 3:41 PM
Reposted by Michael Vitz
I created a “Women in Tech” Starter Pack! Highly recommend to follow these incredibly talented women. 💖✨

go.bsky.app/PNKtkEe

(Feel free to suggest edits, of course!)
November 21, 2024 at 5:47 PM
I‘m very happy that I can now start to remove my custom logging configurations in favor of the #spring boot 3.4 built-in structured logging.
November 22, 2024 at 7:37 AM
It’s hard to believe that there was a time in #java without annotations. In my latest article, you can see how we solved problems back then and how things could work without them today: www.innoq.com/en/articles/...
Java and its annotations
Java code without annotations is hardly conceivable nowadays, even though it is constantly criticized. It’s hard to believe that there was a time before them. Three use cases demonstrate how these pro...
www.innoq.com
November 20, 2024 at 9:38 AM
Der #LLM Hype zieht auch an mir nicht vorbei. Deswegen habe ich mir angesehen, wie diese lokal betrieben werden können und wie mit #SpringAI eine Integration in #Java funktionieren kann. Meine Eindrücke und Gedanken habe ich dabei schriftlich festgehalten: www.innoq.com/de/blog/2024...
February 29, 2024 at 9:19 AM