Explore how Vaadin extends Java to the browser using GWT, TeaVM, CheerpJ, and GraalVM for optimized client-side execution and enhanced performance.

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

Vaadin developers can extend Java to the browser using four approaches: GWT (transpiles Java to JavaScript with optimizations), TeaVM (compiles bytecode to JS/WASM with simpler dependency management), CheerpJ (runs a full JVM in the browser for legacy apps), and experimental GraalVM WebAssembly compilation. Each has tradeoffs in artifact size, startup time, and API maturity. These tools enable building client-side Vaadin components in Java to reduce latency, minimize server traffic, and support offline functionality while maintaining server-side Flow architecture.

Extending Vaadin’s pure Java experience to the browser