Learn how to optimize Docker images for Java apps: multi-stage builds, JAR layering, AOT cache, native images, and security hardening techniques.

Vaadin is a platform for building web applications with Java. Readers can learn about Java web development, UI components, and web application architecture. With tutorials, documentation, and community support, Vaadin offers resources for developers interested in creating modern and scalable web applications.

Vaadin

A deep dive into the design and engineering decisions behind Vaadin's new Dashboard component, focusing on accessibility challenges. Covers WCAG 2.1 AA conformance including color contrast, HTML/ARIA semantics for dashboard layout and widgets, and the complex interaction model needed to support drag-and-drop, keyboard navigation, and pointer-based alternatives for moving and resizing widgets. Explains how move-mode and resize-mode were introduced to provide single-point pointer alternatives to path-based gestures, and how focus trapping and live announcements were handled for screen reader users.

How we built an accessible dashboard component