Failing to load the Example src

[Angelgab82]

I created a Web Application on Netbeans:

I did all this:
http://www.javapassion.com/handsonlabs/ajaxgwtintro/

I imported the GXT library:
gxt-1.1.4

I imported the Resources into my project and added few Java pages everything went Smoothly.

I made a Windows layout with Advanced tabs inside, I need to add the Paging grid example.

Till i added the Example folders i started getting this error

[ERROR] Hint: Check the inheritance chain from your module; it may not be inheriting a required module or a module may not be adding its source path entries properly

Can Someone help me please to be able to run the examples folder because i need the paging grid.

Thank you (I'm beginner with Java and GWT/GXT)

[Angelgab82]

I moved all the files that i need under the resources and now i see the Grid Nicely.

Can someone tell me where is the Data reader in the PagingGridExample ?
http://extjs.com/examples/grid/paging.html

I'm lost because i have the grid seen but empty inside.
I tried adding private Object at the bottom of the page and calling it but no use...

Does anyone know where i can find it?

Thanks.