JavaOne

Java is hitting the small screen! 🎥 At #JavaOne, we debuted the first trailer for the upcoming Java documentary from the team at @CultRepo. Take a peek, and mark your calendar for this summer for the full feature. 📆 social.ora.cl/6014B6nc8n

Java Together… The Power of You - JavaOne Community Keynote youtube.com/live/skc-nIFS-… via @YouTube

Community keynote time @JavaOne #javaone @brjavaman @jimgris @BrianVerm @eMalaGupta

A great week at #javaone, with great content, meeing old friends and meeting new people. I gave a talk about how Netflix is using #java and had a few minutes on stage during the community keynote. Videos should be published soon.

Day 2 at JavaOne: What I didn’t expect was how consistent the message of the day would be. In one of the sessions, “Just-In-Time Compilation for Java Performance: Recent and Ongoing Improvements,” Roberto Castañeda Lozano walked us through what has changed in the JVM. Not over the last decade. Just from Java 21 to 26. And that alone was enough to make me pause. He showed how much effort is going into the JIT compiler. How the JVM is getting better at understanding our code, optimizing it, removing allocations, and using modern CPUs more effectively. Even fundamental things like subtype checks are being reworked, leading to real-world gains—Netflix is seeing up to 3.5x improvements in certain scenarios. What makes this different is not a single breakthrough. It’s the accumulation. Each release adds something small. A better optimization here, less overhead there, smarter decisions in the runtime. None of it feels dramatic on its own. But together, over time, it compounds into something significant. Sitting there, you start to realize that the system gets faster not because we rewrite everything, but because the platform keeps moving forward underneath us. Java rewards patience. Later that day, Brian Goetz took the stage and told a story from his college days. He struggled with writing an essay and, after receiving a bad grade, argued that writing was hard. His professor responded: “Writing is not hard; thinking is hard.” That line reframes what we’re seeing. If the platform keeps improving performance for us, and tools increasingly help us write code faster, then the real leverage shifts. Not into syntax. Not into micro-optimizations. But into how we think about problems, systems, and decisions. And this is where it connects to a broader theme. Java doesn’t chase hype cycles. It evolves. Quietly, steadily, and with a focus on long-term stability. That can make it easy to underestimate. Especially if your mental model is stuck a few versions behind. But days like this make it clear: if you stay with the platform, it keeps paying you back. Before you optimize your code, try upgrading to Java 26 and measure first. There’s a good chance the JVM already did the work for you.

Special thanks to Brian, Mala, and Bruno for participating in the JUG panel during the community keynote here at JavaOne 2026! @eMalaGupta @brjavaman @BrianVerm @java

Walking into the last day of #JavaOne like...

#JavaOne is going really well 🚀 Lots of inspiring conversations and great energy from the community Photo with Java AI pioneers @JamesWard @starbuxman @daviddryparry, Andrey Santrosyan #JavaOne #Java #DevCommunity #AI #GenerativeAI

The Null pointers at the @JavaOne 26 #JavaOne

Java: The Documentary is coming this summer. This is a big one folks... 🍿🍿🍿 youtube.com/watch?v=cwLYS_…

Great experience speaking at #javaone this year. Great to be back! :)

It is now official: NVIDIA ❤️ Java 👇 #java #javaone

Book signing of Developer Career Masterplan by the authors @heathervc and @brjavaman at @JavaOne #JavaOne #Community

Have you attended #JavaOne before? First time? Show off your JavaOne pride with the ribbons that speak to you!

@BrianVerm at #JavaOne about a very important AI topic 👇

Another busy day at @JavaOne! Stop by the @JetBrains booth to meet our product managers and hear what’s coming in the IntelliJ IDEA 2026.1 release. 🎤 Don’t miss today’s talk by @antonarhipov – Spec-Driven Development With AI Agents 🕦 11:30 am PDT

Java powers billions of devices and millions of enterprise apps. Bringing AI to those systems means getting reliability, security, and modernization right. At #JavaOne, Patrick Chanezon and @bbenz showed how. Watch "Java for an AI World": youtube.com/watch?v=3fLCOq…

Thanks for the swags and speaker gift #javaone 👍👍

How Netflix uses Project Leyden to improve application startup time on the JVM. Excellent explanation by Martin Chalupa and Ian Brown. #javaone

Today at JavaOne was packed. There was an interesting moment in the keynote from the Oracle Java team: JavaFX is back. Not just “still exists”, but proper support again. It’s now part of the Java Verified Portfolio, so there’s a clear support story across different Java versions. For desktop apps in Java, that’s actually quite relevant. That also connected well with what I talked about in my session on restarting your Java journey. What I keep seeing: A lot of people still have the wrong perception of Java. Modern Java has evolved significantly and addresses many of the challenges developers complain about. Even in areas like AI, where everyone immediately jumps to Python — Java is often a very strong (and sometimes better) choice when you look at performance, integration, and running things in production. You just need to see what’s possible today. In the afternoon, during the hands-on, we explored a simpler approach. More of a full stack Java idea. Fewer moving parts, more focus. And with JavaFX being properly supported again, you can now also look at desktop UIs as part of that story — not just web. That sparked some good discussions. Best part of the day, as always: the hallway track. Good conversations, meeting friends, exchanging ideas. Also got to take pictures with Java Icons: Brian Goetz and Stuart Marks… and of course Duke. If you want to have these kinds of conversations: The Oracle Java team will be at JCON EUROPE with a booth and many people. Join us in Cologne: europe.jcon.one