Car Gallery pogram in java GUI

Develop a car gallery application where users can add/update/delete cars and search the existing list of cars using combinations of multiple criteria (e.g., cars whose make-up year is between 2006-2010 and price is less than 25000, etc.)  All projects must be composed of at least 4 Java classes.  Must have a user interface either on Swing.  Must utilize Collections.  Must use at least one file to read/write data.  Analysis and design documents must be prepared with (at least 2 different types of ) UML diagrams. Program add,delete and take informations on a text file. We can add car's attribute like kilometer,colour,price,brand name,model and model year. We need two or three forms for [login to view URL] one is for login page and other ones are adding,deleting,searching and show.