urgent ! configuring memory in tomcat

I want to deploy an application using tocat. I want to configure tomcat so that it allocates all the ram for this application. How do I do it ?

Please help as this is urgent.

Thanks and Regards
Jui

Just so that you are aware, "urgent" is a code-word for many people here that means "please ignore my post".

I'd highly recommend that you read this, and then edit your post and subject to remove the urgency.