Java EE (Java Enterprise Edition) General Discussion

In one of my servlets i have written the following code(TOmcat 6.0)

HttpSession session = request.getSession(false);

(i.e if already session is there then only give me back the session otherwise return null)

The above statement is always returning a session even though i have not created a session explicitly.It is never returning a null.

I assume Tomcat by default is creating session. Can we prevent TOmcat from creating the session automatically?

thanks
rama