Base UI proyecto megafono

import javax.servlet.annotation.WebServlet;

import com.vaadin.annotations.Theme;
import com.vaadin.annotations.Title;
import com.vaadin.annotations.VaadinServletConfiguration;
//import com.vaadin.ejercicios.domain.model.Contact;
//import com.vaadin.ejercicios.services.ContactService;
import com.vaadin.server.VaadinRequest;
import com.vaadin.server.VaadinServlet;
import com.vaadin.ui.Label;
import com.vaadin.ui.UI;

/* User Interface written in Java.
 *
 * Define the user interface shown on the Vaadin generated web page by extending the UI class.
 * By default, a new UI instance is automatically created when the page is loaded. To reuse
 * the same instance, add @PreserveOnRefresh.
 */
@Title("Addressbook")
@Theme("valo")
public class JereUI extends UI {

/**
     *
     */
    private static final long serialVersionUID = 1L;

    /*
     * The "Main method".
     *
     * This is the entry point method executed to initialize and configure the
     * visible user interface. Executed on every browser reload because a new
     * instance is created for each web page loaded.
     */
    @Override
    protected void init(VaadinRequest request) {
        Label  hola = new Label("Hola maxi bueno , hola maxi scout");
        setContent(hola);
    }

    @WebServlet(urlPatterns = "/*")
    @VaadinServletConfiguration(ui = JereUI.class, productionMode = false)
    public static class MyUIServlet extends VaadinServlet {

        /**
         *
         */
        private static final long serialVersionUID = 1L;
    }

}