Test environement

Hi,

I have studied NWDS for 2 weeks.

To test my program (either Web Dynpro or J2EE),

I have to deploy to NWAS first.

Since NWAS require many resources (i.e., minimum 1GB memory for 2004s),

I wonder if every developer MUST have NWAS locally to test his program.

Isn't there any small J2EE engine embedded in NWDS such as Oracle's JDeveloper.

Moreover, can I have any clues of minimizing resouces consumed by NWAS,

such as minimizing memory used, stop components that is not necessary for debugging, etc.?

Regards