HelloWorldApplication.java

package helloworld;

import com.vaadin.Application;
import com.vaadin.ui.Label;
import com.vaadin.ui.Window;

public class HelloWorldApplication extends Application {

	@Override
	public void init() {
		Window main = new Window("Hello World Application");
		main.addComponent(new Label("Hello World"));
		setMainWindow(main);
	}

}