<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">package com.example.hellovaadin;

import com.vaadin.Application;
import com.vaadin.event.ItemClickEvent;
import com.vaadin.event.ItemClickEvent.ItemClickListener;
import com.vaadin.ui.Button;
import com.vaadin.ui.Window;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Button.ClickListener;
import com.vaadin.ui.Window.Notification;


public class HellovaadinApplication extends Application {
    @Override
    public void init() {
		Window mainWindow = new Window("Hellovaadin Application");
		Button button = new Button("Click me");
		button.addListener(new ClickListener() {
			@Override
			public void buttonClick(ClickEvent event) {
				getMainWindow().showNotification("Hello Vaadin user");
			}
			});
		mainWindow.addComponent(button);
		setMainWindow(mainWindow);
	}
}</pre></body></html>