Use Vaadin widgets

General
1

Hi,
I am learning how to create an hybrid application with Vaadin and I noticed that the Vaadin page, about the Vaadin widgets, is empty :
https://vaadin.com/book/vaadin7/-/page/widgets.html

Is there another page or a tutorial about it ?

Thanks

2

I don’t know why the site is empty but if you need an overlook of the Vaadin components with simple examples on how to use them you could look at the sampler:
http://demo.vaadin.com/sampler/

3

What are the benefits and the disadvantages of create our own Vaadin widget ?

Thanks.