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Posts by Johan Hutting

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Copyright safe memes with @maritvandijk.bsky.social and @piotrprz.bsky.social at #JCON - and lots of modern Java 🀩

16 hours ago 5 2 0 0
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Thank you to @jcon.one and @richard.fichtner.dev for this leadership award. Building out the #Java community has been a career highlight.

#JavaTogether

19 hours ago 32 4 1 0

If you're at JCON Europe today, join me in the Mentorship Hub (upstairs from the Cinemas) at 14:30 to play JitterTed's TDD Game, learning about Test-Driven Development, as well as how we collaborate affects the work we do.

jcon.mentorshiphub.org/#session=TE...

22 hours ago 4 2 0 0
JCON EUROPE 2026 – Mentorship Hub JCON EUROPE 2026 Mentorship Hub – Have direct conversations with Java Champions, industry leaders, and top speakers at Cinedom Cinema, Cologne, Germany.

If you haven't participated in one yet, I can highly recommend the mentorship hub by @brjavaman.bsky.social and a number of top speakers and Java Champions at @jcon.one this week. Full program is available at jcon.mentorshiphub.org

1 day ago 1 1 0 0
[GR-73792] Extend Truffle runtime with Polyglot Isolate and engine sandbox features. by graalvmbot Β· Pull Request #13322 Β· oracle/graal This pull request adds support for isolated polyglot execution and guest-language sandboxing. It extends the Truffle runtime and Polyglot API to support isolated Engine and Context execution, inclu...

GraalVM CE can now sandbox untrusted JavaScript and WebAssembly code! πŸš€

As AI generates more and more of the code we run, the ability to execute it safely matters more than ever.

We have more coming that builds on this, so stay tuned!

github.com/oracle/graal...

1 day ago 4 2 0 0

Heading for the luminaries?

1 day ago 0 0 1 0
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Time for some coffee, ETA at JCON shortly after 1300

1 day ago 1 0 0 0
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The second session had @rfscholte.bsky.social sharing how to minimise logging in your Maven builds and tests at @jugnoord.bsky.social πŸ‘

Less is clearly more this way 🀩

4 days ago 3 0 0 0
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@jagovreede.bsky.social sharing his experience of three years with @handle.invalid and even @graalvm.org in production at @jugnoord.bsky.social yesterday 😎

4 days ago 4 1 0 1

Looks like πŸ¦‹ is fully available again 🀩

4 days ago 0 0 0 0
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Are you mixing up 24 with Java 23? MarkDown JavaDoc was added in the latter and hasn't seen any extra additions since AFAIK.

6 days ago 0 0 1 0
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Tech conferences aren't dead, they’re evolving.

According to DevoxxUK’s Mark Hazell, the real value isn't the info (you can Google that); it’s the focused learning, the community & the dev in the next chair who solved your bug.

Full ShiftMag interview: bit.ly/3OBf4X9

devoxx.co.uk | 6 & 7 May

1 week ago 9 4 1 0
DaVinci Resolve – Photo | Blackmagic Design Professional video editing, color correction, visual effects and audio post production all in a single application. Free and paid versions for Mac, Windows and Linux.

DaVinci resolve for photos just announced, didn't expect that but will have to check it out πŸ€”
www.blackmagicdesign.com/products/dav...

1 week ago 1 1 0 0
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Goodmorning Barcelona! This afternoon I’ll be talking graph databases and data modelling! 16:30, room 4! Be there @springio.net!
#java #kotlin #neo4j #graphdatabases #conferencespeaking

1 week ago 6 2 1 0

Been toying around with Voxtral to convert speech to text recently, you can run that in a docker container as well πŸ‘

Will be chaotic when you use it to live code though.

1 week ago 1 0 1 0

Ouch, hope it recovers fast πŸ˜”

So you'll also be performing some TTS during your upcoming talks? πŸ€–

1 week ago 1 0 1 0
The record: migrate to immutability by Johan Hutting
The record: migrate to immutability by Johan Hutting YouTube video by Devoxx

Interested in performant modern Java code using records and immutable behaviour? πŸ€”πŸš€

My 15 minute lightning talk at last week's @amsterdam.voxxeddays.com
is now available on the Devoxx channel: www.youtube.com/watch?v=JO_X...

1 week ago 3 2 0 0
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Reigniting the Spark: What Community Taught Me That Code Never Could A senior developer's journey from career apathy back to passion, and the neuroscience that explains why developer community, not a new framework, was the fix.

In 2021 my developer spark was almost dead. I tried every technical fix I could think of.

The actual fix surprised me. Still does.
lomagnette.github.io/posts/reigni...

1 week ago 9 2 2 0
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Really happy to have spoken at @amsterdam.voxxeddays.com !
Next ahead is @springio.net on Tuesday at 16:30! I would love to see you there!

#springio26 #neo4j #graphdatabases #java #kotlin #publicspeaking

1 week ago 8 4 1 0
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What does it really take to maintain open source in Java? Release automation, Maven vs Gradle, contributor chaos, and AI-generated PRs: @andresalmiray.com (Java Champion, creator of JReleaser) shares real lessons from the JVM ecosystem.
πŸŽ₯ Watch now: www.youtube.com/watch?v=Jts6...

1 week ago 17 6 1 0
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Strong with the JVM, Gemma 4 is 😌

jbang gemma4@mukel \
--model %{hf.co/unsloth/gemma-4-E2B-it-G... \
--system-prompt "like Master Yoda, reply you must" \
--chat

~5GB once, download you must.

Python or CUDA, you need not.
Local AI, this is.

2 weeks ago 4 2 1 0

Googling (hah!) the question, it turns out you need a paid pro subscription to generate videos (I thought a limited amount was free and wanted to try something).

The marketing language in the answer doesn't really inspire confidence.

2 weeks ago 0 0 0 0
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The joys of AI subscriptions 🀣 Even eating up your token budget answering questions about the subscription πŸ™ƒ

2 weeks ago 1 0 1 0

It’s been a few days since I was impacted by the #Oracle layoff. I wanted to acknowledge the #Java DevRel team that’s still there, as well as other folks/companies continuing to also engage with the Java community. Please give it a read:

www.linkedin.com/posts/sharat...

2 weeks ago 38 13 0 0

Looking for work. Will DevRel for coffee or wine 😁

2 weeks ago 32 31 1 0
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Looks like I've picke the right room to start @amsterdam.voxxeddays.com with @maritvandijk.bsky.social & Michel opening πŸ‘

2 weeks ago 4 1 0 0

Well, my #Java journey has come to an end. Today my role at Oracle has been terminated.

I’m open to any job leads y’all may have.

3 weeks ago 56 29 17 9
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Ah, daylight saving time - all of the jetlag, none of the travel... πŸ€ͺ

3 weeks ago 10 2 2 0
Spring I/O β€’ 13-15 β€’ April β€’ Barcelona 2026

πŸ‘©β€πŸ’»As I am preparing, I am sharing with you the following: 2 #conferences coming up 😬!
April 1st, @amsterdam.voxxeddays.com about fun and passion at work: amsterdam.voxxeddays.com/talk/?id=1757
April 14th, @springio.net about using #neo4j: 2026.springio.net/sessions/thi...

3 weeks ago 4 2 1 0
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The analog opening act at connect.frl never disappoints

3 weeks ago 0 0 0 0