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
You can watch the recording of me blabbering away about perfect Java container images as well if you missed the webinar:
www.youtube.com/watch?v=z1I2...
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.
Really?? Cool, thanks for the heads-up!
Oh cool, looking forward to see you at Spring I/O!! 🤩
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.
I start the app with SpringApplication.run(). To initialize test data, I used a Configuration class with CommandLineRunner and Order. The data never got seeded before the shell. Now to seed data, I use a Component class without the runner, but with PostConstruct on dataInit(), which works as desired
👾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...
I can explain in more detail, but I'm not sure if this is a bug or my stupidity
Ooh, quite some time😂 But I've been diggin in the wrong direction at first
I used CommandLineRunner at first, didn't help even with the Order annotation
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💖
will do, thank you!
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 :)
