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Nicolai Parlog @nipafx.dev · 29/09/2026

Am Donnerstag und Freitag kommt der #Java Community Process nach BaWü. 😍 Und das beste ist: Jeder kann dabei sein! (Zumindest ein bisschen.) Am 01.10. ab 1400 in der Hochschule #Karlsruhe (Details: 👇🏾) und ab 1830 bei SAP in Walldorf (Details: www.jug-da.de/2026/10/JCP-...).

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Hochschule Karlsruhe University of Applied Sciences
Fakultät für Informatik und Wirtschaftsinformatik

Meet the People Behind Java!

Das Java Community Process Executive Committee (JCP EC) ist zu Gast an der Hochschule Karlsruhe. 1. Oktober 2026 / 14:00 - 17:00 Uhr / Geb. B / Foyer

+ Begrüßung durch die HKA Franz Quint, Prorektor für Forschung, Kooperationen und Transfer
+ Welcome to the Java Community Heather VanCura, Oracle
+ Why Java Matters - From Education to Al Zoran Sevarac, Deep Netts
+ Working on OpenJDK - How Java Is Developed Götz Lindenmaier, SAP
+ Modern Java: Pattern Matching and Beyond Nicolai Parlog, Oracle
+ Diskussion und Q&A mit den JCP EC Vertretern von Alibaba, Amazon, BellSoft, Deep Netts, JetBrains, Microsoft, Oracle, SAP sowie Java Champions Moderation Carsten Sinz, HKA

Danach offener Austausch. Wir freuen uns über großes Interesse! Keine Anmeldung nötig.

Organisation: Carsten Sinz (Fakultät für Informatik und Wirtschaftsinformatik / HKA) und Götz Lindenmaier (SAP)

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Nicolai Parlog @nipafx.dev · 24/09/2026

My conversation with Sean Mullan, Lead of the OpenJDK Security Group and Tech Lead of the Oracle Security Libraries Team, about security in #Java: inside.java/2026/09/24/p... (Also on Spotify, Apple Podcasts, etc.)

inside.java

Episode 71 “Security in Java” [AtA] - Inside.java

Given how prevalent Java is on web servers throughout the internet, security in Java is of critical importance - there's the JDK itself, of course, but also the algorithms and features it offers to ap...

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Nicolai Parlog @nipafx.dev · 18/09/2026

This one was even more fun to record than the regular episodes and I'm very happy with how it came out. I hope you enjoy it too! It's on Spotify (open.spotify.com/episode/2dqz...), Apple Podcasts (podcasts.apple.com/de/podcast/a...), and many other podcast platforms as well as YouTube.

open.spotify.com

"AOT Caching - Netflix' Practice vs OpenJDK's Theory" [I/O]

Inside Java · Episode

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Nicolai Parlog @nipafx.dev · 18/09/2026

The Inside #Java Podcast was all about conversations with the Java architects and we keep publishing those every month. But recently we've added conversations with community experts and now even a cross-over 😮: a conversation with Netflix' Martin Chalupa and Oracle's John Rose about AOT caching.

inside.java

Episode 70 “AOT Caching - Netflix' Practice vs OpenJDK's Theory” [I/O] - Inside.java

From time scales to checkpointing, from managing to inspecting cache files, there are a number of details to consider when creating AOT caches for faster Java application launches.

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Nicolai Parlog @nipafx.dev · 15/09/2026

The #Java 27 launch stream starts in ~45 minutes - see you there! www.youtube.com/watch?v=4V2j...

youtube.com

Java 27 Launch Stream

YouTube video by Java

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Nicolai Parlog @nipafx.dev · 11/09/2026

Oh, I don't hate those questions. I have them myself and love to speculate. But almost everybody else hates them and so it's hard to get answers. 😅 As for JEP 544, I don't know, but my guess is "no". That would be ~3 months after becoming a candidate, which I think would be a considerable outlier.

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Nicolai Parlog @nipafx.dev · 11/09/2026

"Improve startup and warmup time by making optimized native code for an application instantly available when the HotSpot JVM starts. Achieve this by compiling application code to native code in a training run, storing the native code in the AOT cache for use in subsequent production runs." 😍

openjdk.org

JEP 544: Ahead-of-Time Code Compilation

Enable applications to achieve peak performance more quickly.

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Cowtown Coder @cowtowncoder.bsky.social · 15/08/2026

Jackson 3.2.2 and 2.21.6 patch releases out too: github.com/FasterXML/ja... , github.com/FasterXML/ja... with over 20 fixes each. 2.18.10, 2.22.2 to follow #java #json

github.com

Jackson Release 2.21.6

Main Portal page for the Jackson project. Contribute to FasterXML/jackson development by creating an account on GitHub.

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Nicolai Parlog @nipafx.dev · 15/08/2026

Damn, my deep dive proposal "Java is a terrible mess and I will make you suffer for 3 hours" was declined. 😕

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Nicolai Parlog @nipafx.dev · 15/08/2026

The latest Inside #Java Newscast has news on: * Valhalla * primitive patterns * the JSON API * PQC in LTS * monthly updates * OpenJDK mail search And all that in a true Cyberpunk setting. 🌆 How could you *not* watch?! youtu.be/-4gCNsoPAmQ

youtu.be

JSON API, Valhalla Progress, LTS ❤️ PQC - Inside Java Newscast #114

YouTube video by Java

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JEP Tracker @jeptracker.bsky.social · 07/08/2026

🎯 JEP 540 proposed to target JDK 28 Title: Simple JSON API (Incubator) Type: feature Component: core Release: 28 See openjdk.org/jeps/540

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Nicolai Parlog @nipafx.dev · 09/08/2026

Ha, maybe. 😁 I think I was a bit overly enthusiastic.

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Nicolai Parlog @nipafx.dev · 08/08/2026

Wanna have some #Java fun on the weekend? 0. download jdk.java.net/28/ EA 10 1. jshell 2. type `value class Valhallaaaa { }` (vary number of "a"s according to taste)

jdk.java.net

OpenJDK JDK 28 Early-Access Builds

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Nicolai Parlog @nipafx.dev · 07/08/2026

I'm very excited about my first time in Japan 🗾 and fortunate that the JJUG invited me to give a presentation on August 19th (see below for details). 😃

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Karl Heinz Marbaise (he/him) @khmarbaise.bsky.social · 31/07/2026

A very informative talk about JIT compiler with Roberto Lozano how it works etc.. www.youtube.com/watch?v=ofPO... hosted by @nipafx.dev

youtube.com

JIT Compiler From the Ground Up [AtA] Inside Java Podcast 64

YouTube video by Java

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Nicolai Parlog @nipafx.dev · 20/07/2026

New Inside #Java Newscast in a new format. It discusses JDK 27, Valhalla (Now!), a hackathon, and more: www.youtube.com/watch?v=aFSQ...

youtube.com

JDK 27 + Valhalla, Now! + Hackathon - Inside Java Newscast #113

YouTube video by Java

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Vinylist2 (Ceterum censeo Trumpem comprehendendum esse.) @vinylist2.eurosky.social · 06/07/2026

Ohne das Informationsfreiheitsgesetz wären illegale Maskendeals nie ans Licht gekommen. Genau dieses Recht wollen CDU, CSU und SPD jetzt faktisch abschaffen. Das dürfen wir nicht zulassen. Jetzt unterschreiben: 👇 #IFG weact.campact.de/petitions/sp...

weact.campact.de

SPD, stoppt den Frontalangriff auf die Informationsfreiheit!

Wir alle haben das Recht auf staatliche Informationen. Seit 2006 müssen Behörden auf Antrag nach dem Informationsfreiheitsgesetz (IFG) Dokumente herausgeben – seien es Verträge, interne Weisungen oder...

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Nicolai Parlog @nipafx.dev · 17/06/2026

Maybe/probably 28*. 😁 * Predictions are hard, especially about the future

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Hanno Embregts 🎤🎸 @hanno.codes · 16/06/2026

Eleven days ago, I helped run the incredible #JSpring event at Kinepolis in Utrecht! 🇳🇱 We were completely sold out with over 800 attendees and 30+ amazing speakers sharing their knowledge. Huge thanks to everyone who showed up and made it so special! ⚡️

The J-Spring team gathered around the light-emitting letters

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Sean Mullan 🏳️‍🌈 @seanjmullan.org · 04/06/2026

Targeted to JDK 27: JEP 538: PEM Encodings of Cryptographic Objects (Third Preview): openjdk.org/jeps/538 #openjdk #jdk27 #security #crypto #java

openjdk.org

JEP 538: PEM Encodings of Cryptographic Objects (Third Preview)

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Oliver Drotbohm @odrotbohm.de · 01/06/2026

🥁📢 We are going to ship a significant number of security fixes in the releases coming next week. Be prepared to upgrade your apps as quickly as possible. 🍃

spring.io

Spring and Security In The Times Of AI

Level up your Java code and explore what Spring can do for you.

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JUnit Team @junit.org · 19/05/2026

#JUnit 6.1.0 is released! 🕑 Built-in extensions for locale, time zone, and system properties 🚮 Configurable TempDir deletion strategy 🏃‍➡️ New org.junit.start module for compact source files ⚙️ Execution mode config for dynamic tests 🏊 New parallel test executor impl. docs.junit.org/6.1.0/releas...

docs.junit.org

Release Notes :: JUnit User Guide

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Stefano Cordio @scordio.github.io · 15/04/2026

Today, from the venue of Spring I/O, I'm open-sourcing a new library to make data-driven testing in Java a little bit easier: JUnit Converters! A collection of ready-to-use argument converters designed to streamline parameterized testing in JUnit 6 (and 5!) 🚀 🧵 stefano.codes/junit-conver...

stefano.codes

JUnit Converters

Collection of argument converters for JUnit parameterized testing

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Nicolai Parlog @nipafx.dev · 16/04/2026

Sequenced collection: "A collection that has a well-defined encounter order, that supports operations at both ends, and that is reversible." A queue's insertion methods do not generally operate on either end (e.g. `PriorityQueue`), its retrieval methods are one-sided, and it doesn't offer reversal

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Nicolai Parlog @nipafx.dev · 03/04/2026

Yeah because why trust people with a proven track record outside of big tech? That'd be weird, right?

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Trisha Gee @trishagee.bsky.social · 02/04/2026

Looking for work. Will DevRel for coffee or wine 😁

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Nicolai Parlog @nipafx.dev · 02/04/2026

Denver JUG is tonight. 😁 Always look out for Java communities, no matter where you are.

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Nicolai Parlog @nipafx.dev · 02/04/2026

Oh, yeah, Kansas City. Should've specified.

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Nicolai Parlog @nipafx.dev · 01/04/2026

Personally, spite energizes me and I won't let the asshats up top crush my passion for Java. In fact, I'm happy to be speaking at a number of JUGs in the next weeks: * Apr 1st: Boulder * 2nd: Denver * 7th: Kansas * 8th: Dallas * 9th: Austin Looking forward to catching up with you all! 4/4

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Nicolai Parlog @nipafx.dev · 01/04/2026

As for what this means for #Java, the loss of our former colleagues' expertise and drive will surely be felt. But at the same time, the vast majority remain and I'm confident that they will push forward. I wouldn't be surprised if morale took a hit, but am positive that it will be temporary. 3/4

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Nicolai Parlog @nipafx.dev · 01/04/2026

Thank you for all your contributions to the #Java community, Shar. You have been shepherding it for a quarter century and, if you're up for it, I hope you get to keep doing just that for years to come. As a German, I don't use the word "friend" lightly, but you are just that - my friend. 🫂 2/4

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Nicolai Parlog @nipafx.dev · 01/04/2026

What happened yesterday at Oracle is a disgrace. None of these people deserved to get fired and even less so in the soulless way it was done. I'm sure nobody in Java's leadership wanted this to happen and that they fought tooth and nail to minimize the impact. And yet, here we are... 1/4

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Karl Heinz Marbaise (he/him) @khmarbaise.bsky.social · 26/03/2026

very interesting talk about the carrier class parts. youtu.be/b6cXuA84c9g Thanks to @nipafx.dev and of course @briangoetz.bsky.social for those deep dive.

youtu.be

Carrier Classes & Discussing Syntax - Inside Java Podcast 52

YouTube video by Java

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Mark Reinhold @mreinhold.org · 17/03/2026

Java 26 / JDK 26: General Availability: mail.openjdk.org/archives/lis... Features: openjdk.org/projects/jdk... Downloads: jdk.java.net/26/ #Java26 #JDK26 #OpenJDK #Java

mail.openjdk.org

Java 26 / JDK 26: General Availability - jdk-dev - openjdk.org

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Nicolai Parlog @nipafx.dev · 17/03/2026

Early bird and everything. See you later! #JavaOne

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Nicolai Parlog @nipafx.dev · 14/03/2026

That's not good - maybe give bugs.java/bugreport/ a try? (I'm traveling to JavaOne right now and can't easily research a better answer. Can you ping me next week if the problem persists?)

bugs.java

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Nicolai Parlog @nipafx.dev · 13/03/2026

#JavaOne is coming! Are you? If in person, check out dev.java/community/ja... for a user-friendly schedule. And if you see me on site, flag me down - I want to chat with you. If you stay home, join us on stream: dev.java/community/ja... TL;DR: Tue, Wed, Thu, starting at 1500 UTC.

dev.java

JavaOne 2026 Schedule

All sessions at JavaOne in California, March 17–19, 2026 - designed by, organized by, and run by developers

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Nicolai Parlog @nipafx.dev · 28/02/2026

I'm so happy that we're not currently in the process of handing these people the keys to our economy, making us an order of magnitude more dependent on them. Because that would be utterly brainde... Oh, it translates Rust to Java? Forget what I said, so cool, totally worth it!

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Nicolai Parlog @nipafx.dev · 25/02/2026

Java has IO.print and IO.println now. Time to update the lazy memes.

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Nicolai Parlog @nipafx.dev · 19/02/2026

Let's talk about #Java's checked exceptions - smartly. Not whether we should have them (that ship has sailed) but where the friction comes from and what could be done to reduce it: www.youtube.com/watch?v=99s7...

youtube.com

Towards Better Checked Exceptions - Inside Java Newscast #107

YouTube video by Java

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Richard Fichtner 💻☕ @richard.fichtner.dev · 18/02/2026

Java is old! Yes, but the people working on Java are not (all) old :) Yagmur Eren works on the JDK in Stockholm, Sweden. She will be speaking at JavaOne about "Intelligent JVM Monitoring: Combining JDK Flight Recorder with AI". Join us at JavaOne and learn from the people who work on and with Java!

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Mark Reinhold @mreinhold.org · 09/02/2026

First JDK 26 Release Candidate: mail.openjdk.org/pipermail/jd... Downloads: jdk.java.net/26/ #JDK26 #Java26 #OpenJDK #TestItNow

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Nicolai Parlog @nipafx.dev · 04/02/2026

Lazily initializing fields in #Java is error-prone and undermines constant-folding. JDK 26 comes with JEP 526, which previews `LazyConstant` - the remedy to this malady. More details in Inside Java Newscast #106 - join me for the premiere tomorrow morning, 0700 UTC: www.youtube.com/watch?v=BZlX...

youtube.com

LazyConstants in JDK 26 - Inside Java Newscast #106

YouTube video by Java

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Loïc Mathieu @loicmathieu.fr · 30/01/2026

After migrating Kestra from Java 21 to Java 25, we see a significant improvement in memory usage. It uses 35% less heap and 12% less metaspace! Upgrading always brings benefits ;) #java #kestra github.com/kestra-io/ke...

github.com

Chore/java 25 by loicmathieu · Pull Request #14221 · kestra-io/kestra

We read every piece of feedback, and take your input very seriously.

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Nicolai Parlog @nipafx.dev · 27/01/2026

Come to JavaOne 2026 in Redwood City (California, USA), March 17th-19th, and get 100$ off with code J12026YTS: www.oracle.com/javaone/

oracle.com

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