IDEA does not see com.vaadin.Application

I am using 

vaadin-bom

 for importing vaadin dependencies, this one already has 

vaadin-client-compiler

 and other needed dependencies for using vaadin. But when I extend my class from Application IDEA cant find the class

What can it be?

Johannes Häyry: Application is from Vaadin 6. You should extend "application entry point" from com.vaadin.ui.UI.

oh I see, so many examples on this website with Application class that misslead you.

Thank you

Glad I cloud help. Which page are you finding these examples?

Johannes Häyry: Glad I cloud help. Which page are you finding these examples?

I remember it was on vaadin.com, but can`t find the link now