Tomcat7/Java Project: Finding out the starting point, where does my application starts?

Question

I have to analyze a Spring/Maven/Java with Hibernate Application. What I do, I start from the entry point of the application, where I can log in (it is a JSP based web app).
But is this really the point where the application starts and does its initialisation?
I do not find a main function, so my question is, and believe me I have searched for it quiet a long time,
how can I find the starting point?
The class, the method, which is started at first, for example when tomcat starts?

Answer 1

答案是由John Donn给出的！