If you deploy this to a Java server, you'll get the following:
Since the UI code runs on the server side, you can debug it using the tools that your Java IDE of your choice provides. For example, here we are adding a breakpoint in the line that gets invoked when the button is clicked:
These are some of the cool things about Vaadin Flow:
There are more cool features in Vaadin Flow. The following videos show some of them in action:
Copyright (C) Alejandro Duarte.