Vaadin Dark Mode - 1 Line (Java Web App) Switch color schemes instantly in a #Java web app with Vaadin—no reload. @ColorScheme for the initial scheme setColorScheme(...) to switch at runtime System sync reacts to OS appearance changes. vaadin.com #vaadin #java #darkmode #webdev

See ya all in a few hours, don't forget to bring popcorn😁

If you prefer a deeper walkthrough with code examples and trade-offs, @edelveis.dev covers the full picture in the video here: youtu.be/fiThkd__HEU

Recently, I participated in a webinar by the @vaadin.com team where I talked about optimizing Java container images. And now, the awesome Miikka Andersson wrote an article on that❤️‍🔥 vaadin.com/blog/buildin...

👾Upcoming on CyberJAR: Java Vibe Coding Battle On March 5, I'm joined again by @rabauer.bsky.social to cross code swords😈 We will vibe code a Spring Boot + @vaadin.com app live with GitHub Copilot. Two coding styles, one unbiased jury - quality checks in CI! www.youtube.com/watch?v=ukcQ...

👾New on CyberJAR: Spring Developer Roadmap 2026 Being a great Spring developer is not only about knowing the framework, but also about mastery of backend engineering. This roadmap by @asm0dey.site covers the essentials you need to know to stand out: www.youtube.com/watch?v=nuld...

Have been so careful about keeping my NeuroWatch demo clean and up-to-date that I have nothing to showcase when explaining how to manage CVEs in application deps. Need to add a vulnerable dep on purpose, oh my😅

Java is powerful, but its community is what makes it special💚 This Thursday, I’ll go live with @yourjavaguy.bsky.social to talk about building a thriving Java community, supporting newcomers, sharing knowledge, and helping each other grow. Come hang out with us! www.youtube.com/watch?v=2zaW...

👾New on CyberJAR: Agentic AI on JVM with Embabel Embabel makes it easy to build sophisticated agentic flows on the JVM guarded by strong typing and domain models. See how to integrate it into the existing Spring Boot app: www.youtube.com/watch?v=43zp...

Behold: the first-ever list of news outlets that have banned generative AI in their reporting. As of today, this is literally information that you cannot find on Google. My goal is to fill the starter pack, so please send over suggestions with supporting evidence! go.bsky.app/8cn1XfT

Slop is the perfect word to describe the low-quality, high-volume, AI-generated content being thrown around. If you don't have time to write it, I don't have time to read it.

Got myself a home on the web :) edelveis.dev

LIVE TODAY🚀 Grab a coffee and join me and @dashaun.com at 15:30 CET as we break down the 2025 State of Container Security survey from Devoxx and discuss security expectations vs production reality: www.youtube.com/watch?v=Sqmx...

👾New on CyberJAR: Spring Data MongoDB Take the best of two worlds: @mongodb.bsky.social and Spring Data 😍 In this video, I go from setup to projections and aggregations, so if you're starting your journey with Mongo and Spring, I got you covered: www.youtube.com/watch?v=LCHM...

h my, @asm0dey.site and I landed in TOP 100 most watched talks of 2025!😍 What can I say, we make a great combo www.techtalksweekly.io/p/100-most-w...

📓 How to Create UI in Java with Vaadin: Layouts, Grids, Filters Just published a guide on @vaadin.com : Spring boot setup, Spring Security-backed login page, tabular data display, and filter search with a demo app NeuroWatch. bell-sw.com/blog/how-to-...

GC happens.

👾New on CyberJAR: Backend Developer Roadmap 2026 Being a good backend dev is not about learning another language or framework. It's about mastering fundamentals that will keep your systems resilient and maintainable over time. What are these? Watch and find out! www.youtube.com/watch?v=lx2g...

Fun fact: if your Spring Boot app opens an interactive shell on startup, the data initializer (or some other startup hooks) may never fire until you exit. Used the PostConstruct annotation and everything worked. Haven't been bitten by the lifecycle in a long time🤪

The CyberJAR channel has hit 3K subscribers🥳 Thanks to everyone for watching, commenting, and sharing - more cool JVM content from me and @asm0dey.site is on the way! So grateful to @bellsoft.bsky.social for supporting the channel so we can connect with and contribute to the Java community💖

A very nice feature of @jooq.org - implicit joins! No need to explicitly join child tables to retrieve parent's columns. SQL that feels like ORM :)

We had a great discussion with Rogerio Robetti about JDBC connection pooling specifics in microservices and possible solutions to the issues. Thank you everyone for coming! The recording is available on YouTube

Do you know how BIG is the gap between what teams want for container security and practices they implement now? Our team surveyed 427 engineers at Devoxx 2025 on container security. The report answers the question above and reveals other key trends: bell-sw.com/state-of-con...

The Spring Data JDBC is growing and IntelliJ IDEA provides first-class support for it! ✅ Create entities from DB tables ✅ Generate scripts for Liquibase / Flyway ✅ Create repositories from usage + auto-wiring ✅ Column-to-code completion Read more 👉 jb.gg/39id13

🔐 A Guide to Java Application Security Discover proven approaches to securing enterprise #Java applications, from code to containers: bell-sw.com/blog/a-guide...

👾New on CyberJAR: Sizing JDBC Connection Pools for Real Production Load JDBC pools fail you in prod? Here's how to configure them for production traffic and use a database proxy Open J Proxy for centralized connection management and resilient scaling: www.youtube.com/watch?v=0iHl...

I finally watched Return to Silent Hill, and I must say, I'm bitterly disappointed. It is as if the script was written by AI: a set of scenes loosely bound to each other or not bound at all, and no core idea that could hold them together.

👾 JDBC Connection Pools in Microservices. Why They Break Down (and What to Do Instead) This Thursday at 6 PM CET, I'll be joined by Rogerio Robetti to discuss why JDBC connection pools fail in the reality of microservices and how to solve the issue: www.youtube.com/watch?v=j13z...

I haven't trained my SQL muscle for a while, and now, after starting a project on jOOQ, I feel like I need to go back to basics before implementing more complex stuff... Luckily, rolling back into the process is much easier with jOOQ's DSL API.

Liberica JDK CPU/PSU updates are out for 6, 7, 8, 11, 17, 21, and 25. The release contains 1217 fixes and backports overall. BellSoft participated in eliminating 21 issues in all releases. Details: bell-sw.com/blog/liberic... Download: bell-sw.com/pages/downlo...

We had a great webinar with @vaadin.com on creating a perfect container image for #Java, covering image size, JAR layering, memory consumption, startup, and image hardening. The recording is available on YouTube: www.youtube.com/watch?v=z1I2...

👾New on CyberJAR: JDBC vs JPA vs jOOQ JDBC, ORM, JPA, Hibernate, Blaze Persistence, jOOQ - let's put all these concepts on their place in #Java db access stack and discover when to use which using real-world examples! www.youtube.com/watch?v=fiTh...

Update: the Spring Boot + Vaadin webinar on Java container images is now happening tomorrow (Jan 20), same time. @cat-edelveis.bsky.social and Miikka Andersson will cover layering, image size, startup time, and practical hardening. 🕒 18:00 CET / 12 PM ET / 9 AM PT 🔔 pages.vaadin.com/creating-a-p...

Happy birthday, dearest @intellijidea.com 💝 Thank you for being the first-class spaceport for our code for 25 years straight! #IntelliJIDEA25

Securing AI-Generated Code: Preventing Phantom APIs and Invisible Vulnerabilities

Discover the ultimate decade-long guide on Java Garbage Collection (2016-2026) by @diakogiannis.bsky.social. Learn to choose the right GC for all workloads. foojay.io/today/the-ul... #Java #GC

I'm terribly sorry, but we had to postpone the webinar due to technical issues on my side😢 New date: next Tuesday, same time Come by - I promise, the goodies I prepared are worth it💔

The love/hate Hibernate topic hasn't lost it's relevance: the video sparkled a nice conversation on Reddit www.reddit.com/r/java/comme... What is your stance, friends? What do you prefer, ORM or JDBC/jOOQ?

👾New on CyberJAR: Hibernate, Ditch or Double Down? What Hibernate does under the hood, in which scenarios it shines, how you can fall into a trap, and when SQL-first approach is better? And can you have the best of two worlds in one #Java app? Watch and find out -> www.youtube.com/watch?v=J12v...

It's happening in just three days 🤩 On January 15, I'm attending a @vaadin.com live webinar to discuss how to create a perfect container image for Java using a Spring + Vaadin app as an example. See you there! pages.vaadin.com/creating-a-p...

🎉 New year, new goals, and last chance to submit your proposal! 🎤 Only 4 days left to submit your session ⏰ Kick off 2026 by sharing your ideas, lessons, and passion with the community.

Seeing how I sucked at many of my goals last year, this year, I will have THE ONLY goal. I will be a smart cookie and plan my day with all my hobbies, sports, and quehaceros up to a minute.

Friends, you have been the most helpful here and on X, thank you, now it's time for me to dig in and choose something from this great variety😍 PS I know creating a personal blog is no big deal, but I'm always SO excited about choosing a stack!

👾 Java in 2025: A Year in Review Wrapping up 2025! Here's my overview of the key events in and around the #Java ecosystem, including JDK 25 LTS, AI on JVM, framework updates, and more ➡️ Have a joyful holiday season, friends, see ya all in 2026💝 www.youtube.com/watch?v=UoEK...

I think I'm ready for a personal website as the number of my articles, videos, and talks grows, and I really need my own space🙂 Fellow bloggers, what approach do you use / recommend? Managed WordPress, GitHub Pages, Vercel... ?

COMING UP! On January 15, I'll be speaking at the @vaadin.com webinar on how to create a perfect Docker image for #Java apps. We'll explore how to: - Cut memory usage - Slash startup time - Speed up rebuilds - Minimize CVEs Register now and see ya there✨ pages.vaadin.com/creating-a-p...

👾New on CyberJAR: What's New in JDK 26? Next feature release of #Java includes 10 JEPs, mostly with improvements to the features under development. Here's a laconic overview: www.youtube.com/watch?v=wtTd...

Open J Proxy 0.3.0-beta is out, packed with new and improved features! Key updates: - Multi-node support - Language-agnostic protobuf serialization - Testing pipeline simulating complex scenarios - Many new configurations for finer control More in a JAVAPRO article: javapro.io/2025/12/17/o...

Yay, @vaadin.com 25 is out with lots of cool improvements to the components and also a simplified workflow with themes as stylesheets and easily reusable base styles: can't way to lay my hands on this version when I'm done with quehaceres urgentes🙂 vaadin.com/blog/vaadin-...

We had an amazing talk with Dr Rod Johnson about agentic AI on the JVM with Embabel! If you've missed it live, no worries, the recording is available on YouTube (all the links mentioned on the stream are in the video description): www.youtube.com/watch?v=bHjS...