Clinic System

I'm having an assignment about clinic system in java language the requirement as follows : You are required to design the UML diagram (includes use case diagram and class diagram) and provide an implementation (i.e. java program) for the design. You are free to customize the systems to fit the marking scheme provided together with this assignment question. Bonus mark will be given if additional feature is attractive enough. You are free to use other software (such as Netbeans) to create your program. But, you are only allowed to use command prompt to call up the classes during demo. The system need to have features as below: • Addition of new data • Edit of existing data • Display data • Saving data to a file • Load data from a file how much it will cost? and when can u complete it?