Java and Open Source Enthusiast and Community Leader
Amsterdam, the Netherlands
- Tweets 17,674
- Following 4,474
- Followers 8,232
- Likes 7,777
Pinned Tweet
Thanks @heinzkabutz for making this evening’s @AmsterdamJug meetup even more really special!
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Geertjan Wielenga retweeted
We are teaming up with the @AmsterdamJug for a special live-streamed event exploring one of the biggest questions facing devs today: Did AI Just Break Software Security Forever?
Thursday, Aug 27 · 4:00 PM to 6:30 PM UTC
Online event luma.com/8pl0y5om
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Geertjan Wielenga retweeted
Very excited to speak in Ghana (even if only virtually).
She’s a Java Champion and Developer Advocate at JetBrains with over 20 years of experience in software development, and tomorrow, she’s one of our guest speakers
Marit van Dijk joins JUG-Ghana’s first in-person meetup
See you there🤙🏾
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Geertjan Wielenga retweeted
🚨 Oracle Java licensing changes caught many companies off guard.
But here’s the important part:
You have alternatives to Oracle Java / Oracle JDK 🧵👇
Made with AI
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Geertjan Wielenga retweeted
How to Foster a Thriving Java Community nitter.siddz.com/i/broadcasts/1jxXgegML…
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Geertjan Wielenga retweeted
🔥 We’re live now, come join the conversation! @cat_edelveis + @your_javaguy on what actually makes #Java communities grow and stay healthy: piped.video/live/2zaWyaHRfJk
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Geertjan Wielenga retweeted
In #Java26, JEP 504 finally removes the Applet API. java.applet.Applet, javax.swing.JApplet, etc. are gone. If you still extend Applet/JApplet, you’ll need an older JDK or a real desktop UI (AWT/Swing/JavaFX). Minimal repro that breaks on 26 👇
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Geertjan Wielenga retweeted
Join us next week for 8 Java Predictions Every Enterprise Needs to Know for 2026. These insights are essential for CIOs, CTOs, and tech leaders planning for the future.
Don't miss out! Check out the details here 👉 bit.ly/4sC3cDz
#Java #TechEvents #AI
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Geertjan Wielenga retweeted
🚀 It’s starting now! We’re live at #JCONGenAI2025 Hamburg – join us in Floor 1, Rooms Sao Paulo 🎉
Get ready for a hands-on #GenAI learning experience with the #Java community — real-world use cases, expert talks, and plenty of inspiration!
genai.jcon.one/
#AI
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Geertjan Wielenga retweeted
The Call for Papers for Voxxed Days Amsterdam 2026 is officially OPEN! 😎
Do you have the the knowledge, experience or have an idea to share to the #Java community?
This is your chance!
📅 Date: April 1–2, 2026
📌 Submit your proposal:
vdams26.cfp.dev/
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Geertjan Wielenga retweeted
Fourteen days have passed, and it is time for @miragemiko @OpenValue to present on Foojay a fresh collection of readings that could influence developments in the field of #artificial #intelligence!
foojay.io/today/jc-ai-newsle…
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Geertjan Wielenga retweeted
At #AmsterdamJUG, an excellent time with @prpatel @AzulSystems @TheDanicaFine @Snowflake @KoTurk77 @VoxxedAmsterdam Simone Romani @ingnl! #nameyoursprintafterafamousdeveloper
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Geertjan Wielenga retweeted
At #AmsterdamJUG, @TheDanicaFine @Snowflake learns that the SVB bank in the Netherlands names its sprints after, amongst others, famous women developers. :-)
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Geertjan Wielenga retweeted
Thank you @arnokoehler 👍 What a fantastic conference by an amazing group of organizers!! Thanks again for having me ♥️
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Geertjan Wielenga retweeted
An excellent 1st edition of @Ai4Devs yesterday in Amsterdam, thanks to @JoostKW @vilojona and many many others, including @starbuxman @prpatel!
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Geertjan Wielenga retweeted
Amazing post event dinner ♥️🥰🥰 the atmosphere,.the vibe (not coding), the conversations is amazing .
#ai4devs #ai #conference
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Geertjan Wielenga retweeted
Amazing conference and this is only the first edition!! Thank you so much for having me @Ai4Devs @vilojona @GeertjanW @arnokoehler Joost Kaan-Wagenaar. I am looking forward to more amazing events in the coming years!!
Our friend @mgrygles in a packed room talking about event driven and multi agent architectures workflows at #ai4devs
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Geertjan Wielenga retweeted
JavaMUG is meeting tomorrow, but it's a happy hour at @LegacyFoodHall.
We are meeting at 5:30pm, on the 2nd Floor at the Good View Bar.
Come find me (@erikweibust) and @prpatel enjoying a beverage, talking Java, AI and our favorite beverage.
More info on our Meetup or site!
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Geertjan Wielenga retweeted
Meet me at @picnic for the next @AmsterdamJug meetup on the evening of September 4 in Amsterdam for a tour of the top REST API design pitfalls, collected with care from over 150 companies. Bring your friends (and your stories) to this after-hours brainstorm.
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