Data-Centric Applications with Vaadin 8

Servlets and UIs

A Vaadin application in its simplest form is a Servlet that delegates user interface logic to a UI implementation. The vaadin-server dependency includes the Servlet implementation: the VaadinServlet class. Let’s configure one.

Create a new directory with the name java inside the src/main directory.

You might have to tell your IDE that this is a source directory. You will most likely find this by right-clicking the directory and selecting the option to mark it as a source directory. Check the documentation for your IDE for detailed instructions.

Create a new package with the name packt.vaadin.datacentric.chapter01, and add a simple UI implementation inside this package:

public class VaadinUI extends UI {    @Override protected ...