New to Java

Hi All,

Can someone please guide me how to start with developing a leave management system? I know core java but nothing beyond that. I'd love to read J2EE and do this project.
I'd appreciate if someone can guide how to start doing this project.
For my LMS, requirement is this

Requirement : User login and after that he would get a homepage. In the homepage, we need to show the details of the leave taken along with option of leave application.
Similarly an admin shud have option to register the new user and also check his leave status (no of leaves). Shud be able to generate a report for the same.
A mail shud go to the manager for the leave application from the employee.



Thanks
Raghavendra