GWT Widgetset

Hi everyone!

I just start Vaadin adventure, still fight with a problem:

GWT plugin is configured to detect modules, but none were found.
No widgetsets found - generating AppWidgetset if necessary.
Updating widgetset AppWidgetset

I was looking for answers in different places on the web, which are not connected with each other, opinions are mixed.
Some people talk about .gwt.xml file configuration, but i haven’t him during create Vaadin project(it is possible that I’m doing something wrong), and some others just need to configure pom.xml.
Finally, I don’t know what should I correct/modify.
Using NetBeans 8.2.

Can I ask the Vaadin community for help :D?

package com.mycompany.vaadin_demo;

import javax.servlet.annotation.WebServlet;

import com.vaadin.annotations.Theme;
import com.vaadin.annotations.VaadinServletConfiguration;
import com.vaadin.server.VaadinRequest;
import com.vaadin.server.VaadinServlet;
import com.vaadin.ui.Button;
import com.vaadin.ui.Label;
import com.vaadin.ui.TextField;
import com.vaadin.ui.UI;
import com.vaadin.ui.VerticalLayout;

 * This UI is the application entry point. A UI may either represent a browser window 
 * (or tab) or some part of an HTML page where a Vaadin application is embedded.
 * <p>
 * The UI is initialized using {@link #init(VaadinRequest)}. This method is intended to be 
 * overridden to add component to the user interface and initialize non-component functionality.
public class MyUI extends UI {

    protected void init(VaadinRequest vaadinRequest) {
        final VerticalLayout layout = new VerticalLayout();
        final TextField name = new TextField();
        name.setCaption("Type your name here:");

        Button button = new Button("Click Me");
        button.addClickListener(e -> {
            layout.addComponent(new Label("Thanks " + name.getValue() 
                    + ", it works!"));
        layout.addComponents(name, button);

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

17103177.xml (5.13 KB)

No worries, everything is fine.

The GWT compilation got a nice update in 7.7 to autodetect widgetsets in addons (see for a list) and this is its way of telling you it didn’t find any. Now since you don’t have any addons added in your POM this is what is supposed to come out.

Thanks a lot…so, I understand that now when I will be missing any configuration, can add everything in my pom.xml file, like as “dependency” or something ?