package ch.asynk.helloworld; import com.vaadin.Application; import com.vaadin.ui.Window; import com.vaadin.ui.Label; public class HelloWorldApp extends Application { /** * */ private static final long serialVersionUID = 1L; private Window mainWindow; @Override public void init() { mainWindow = new Window("Hello World Application"); Label label = new Label("Hello world"); mainWindow.addComponent(label); setMainWindow(mainWindow); } }