Classes/Beans/Servlets. Lots of them.
Servlets for Cinema, Theather, Seat, Movie, Screening, ScreeningSeat.
Servlet for Cashier reservation/sales.

To set-up the DB: Netbeans -> Services -> Java DB [Right click] -> Create Database

DB Name: CinemaDB
DB Username: nbuser
DB Password: nbuser

Then check out the persistence.xml. :]