Why use Facade pattern for EJB session bean

Question

I want to ask what is the reason to use Facade Pattern when access EJB Session Bean. In my Netbeans 6.9.1, if I do New > Sessions Bean for Entity Classes<

Answer 1

Yes and no. The Facade pattern makes a lot of sense, but having a separate facace per domain object makes no sense.

You will want to group facades per groups of functionality of domain objects. Imagine a billing system. It has bills, items, customer, addresses. So you would there perhaps a Facade for bill handling (adding items, setting customer, printing, marking as paid) and a different facade for creation and update of users, associating with addresses and so on.