Java Server Faces

Facelets tags are used to add components to allow user input and responses from the server.
On submit, the user's input is validated and an EL sets the value of a backing bean property.
The client is then redirected to response.xhtml, where the result of the guess is displayed.

Hi,

My name is Duke.
I am thinking of a number between
0 and 10.
Can you guess it ?