symfony 2 : Namespace “Acme” does not contain any mapped entities

Question

I am following the book and on the page http://symfony.com/doc/current/book/doctrine.html

While following the book I am trying to work on relationship of product and cat

Answer 1

With

doctrine:generate:entity

you'll create new entity.

And when you add some attributes by hand with

doctrine:generate:entities AcmeDemoBundle:User

you'll create all accessor (getter and setter) of the entity User of AcmeDemoBundle