Glad you liked it. It uses CSS transitions and an SVG :)

Probably the most cool visual explanation for HTTP/3 in #JDK26 by @lutskedev.bsky.social and Johannes Bechberger 🥳🥳🥳!!!

#Java #JEP #VoxxedDaysAmsterdam

Join us today at 13:30 in zaal 11 @amsterdam.voxxeddays.com and hear why @mostlynerdless.de and I think that Java 26 is boring!
#VDAMS26

That's such a pity. Good luck with your job search.

Java 26 is boring, and that's a good thing - Mostly nerdless Java 26 is here, but it's boring. Nothing really exciting. But that's a good thing, as the boring stability is what made Java successful.

Java 26 is here, but it's boring. Nothing really exciting. But that's a good thing, as the boring stability is what made Java successful (co-written with @lutskedev.bsky.social):
mostlynerdless.de/blog/2026/03...

Come and win a "Java 26 is boring" t-shirt :)

I know :) But lynx are just big cats.

The cat is gorgeous :)

Writing a tiny JSON Parser - Mostly nerdless Parsing JSON is not hard, we can easily build a parser that directly follows a (transformed) JSON grammar, creating femtojson in the process.

Parsing JSON is not hard; we can easily build a parser that directly follows a (transformed) JSON grammar, creating femtojson in the process: mostlynerdless.de/blog/2026/03...

When you come to the Java 26 talk, a custom-made "Java 26 is boring" shirt could be yours if you win our quiz.

Looking forward to seeing you again :)

The Simpsons - “Boring” YouTube video by AreaEightyNine

See www.youtube.com/watch?v=I6vy...

The submissions will be treated anonymously. Please send them our way at cap.in.the.pocket@gmail.com

I need your help: If anyone wants to send me an audio snippet saying "Boring" (as in "Java 26 is stable. It's boring."), I would happily accept them. I want to play this audio via a button press during a talk.

In other news: I'm speaking at @amsterdam.voxxeddays.com with @lutskedev.bsky.social.

I was in the talk and can confirm: I never learned so many things about Llamas (crias...).

Redacting Data from Heap Dumps via hprof-redact - Mostly nerdless Java Heap Dumps might contain sensitive information, with hprof-redact you can easily remove it. Learn more in this blog post.

Java Heap Dumps might contain sensitive information; with hprof-redact, you can easily remove it. Learn more in this blog post: mostlynerdless.de/blog/2026/02...

Femtocli: A small but mighty CLI library for small CLI tools in < 45KB - Mostly nerdless Command-line parser libraries don't have to be big to support everything you need: Introducing femtocli, which is smaller than 45KB.

Command-line parser libraries don't have to be big to support everything you need, like subcommands, validators, and Java-agent-style argument parsing: Introducing femtocli, with a 45KB JAR file.

Read more at mostlynerdless.de/blog/2026/02...

Redacting Sensitive Data from Java Flight Recorder Files - Mostly nerdless Redact sensitive data from Java Flight Recorder and JVM crash logs with jfr-redact, a tool for safely sharing profiling and error files.

Redact sensitive data from Java Flight Recorder and JVM crash logs with jfr-redact, a tool for safely sharing profiling and error files:

mostlynerdless.de/blog/2026/02...

Do you know the book "Street-Fighting Mathematics"? It is similar

streetfightingmath.com

Guess the Java version of a code snippet in this fun game A game that let's you guess the Java version of snippets, from Java 1.0 to Java 25

Think you really know Java? ☕
Guess the Java version from code snippets in my Java Version Quiz: mostlynerdless.de/java-game/

In this week's blog post, I explain how a chaotic eBPF-based scheduler helps reproduce rare concurrency bugs, illustrated with a real-world OpenJDK case: mostlynerdless.de/blog/2026/01...

"Align the syntax of a formal parameter declaration in an implicitly typed lambda expression with the syntax of a local variable declaration." (from the openjdk.org/jeps/323)

A tiny puzzler: Is this valid Java?

import java.util.function.Predicate;

public class Test {
Predicate<String> f = (var a) -> a.isEmpty();
}

Thanks :)

No, because I only analyse the used Java syntax, so I don't need to build the projects. I just need to parse the Java code.

I'm just trying to analyze which Java features existing libraries use. The plan is to implement a tiny code analysis for a (hopefully) upcoming talk.

I'm not looking for small projects, so kestra is good

I'm looking for suggestions for modern open-source Java applications and libraries for a code analysis project

Async-profiler has released an update that includes native lock profiling and a latency filter. Consequently, ap-loader, which wraps async-profiler in a platform-independent JAR, has also been updated: github.com/jvm-profilin...

Reading and Writing JFR Files Programmatically - Mostly nerdless JFR is great, but do you know how to read and write JFR files programmatically? Learn more in this week's blog post.

JFR is great, but do you know how to read and write JFR files programmatically? Learn more in this week's blog post: mostlynerdless.de/blog/2026/01...