Java Programming Exercise (0)

Java Programming Exercise

Objective

Assess OO analysis and design skill and java programming skill.

The problem – Video rental store

For a video rental store we want to create a system for managing the rental administration. We want three primary functions .

• Have an inventory of films
  
• Calculate the price for rentals
  
• Keep track of the customers “bonus” points
  

Price

The price of rentals is based type of film rented and how many days the film is rented for. The customers say when renting for how many days they want to rent for and pay up front . If the film is returned late , then rent for the extra days is charged when returning.
The store has three types of films.

• New releases – Price is PREMIUM_PRICE times number of days rented.
  
• Regular films – Price is BASIC_PRICE for the fist 3 days and then BASIC_PRICE times the number of days over 3
  
• Old film - Price is BASIC_PRICE for the fist 5 days and then BASIC_PRICE times the number of days over 5
  

PREMIUM_PRICE is 4 EUR
BASIC_PRICE is 3 EUR
Write a program that calculates the price of rentals and have output similar to this:
Matrix 11(New release ) 1 days 4 EUR
Spider man(Regular rental) 5 days 9 EUR
Spider man 2(Regular rental) 2 days 3 EUR
Out of africa(Old film) 7 days 9 EUR
Total price : 25 EUR
When returning films late
Matrix 11(New release) 2 extra days 8 EUR
Spider man(Regular rental) 1 days 3 EUR
Total late charge : 11 EUR

Bonus points

Customers get bonus points when renting films. A new release gives 2 points and other films give one point per rental. (Regardless of the time rented)
The system keeps track of how many bonus points the customers have and then the customers can use their bonus points to pay for a “new relase” rentals. 25 points pays the rental for one day. When paying with bonus point the rental receipt could look like this.
Matrix 11 (New release) 1 days ( Paid with 25 Bonus points)
Total price : 0 EUR
Remaining Bonus points: 3

Inventory

The inventory keeps track of all the films in the store. We need to be able to:

• Add a film
  
• Remove a film
  
• Change the type of a film
  
• List all films
  
• List all films in store (e.g. not rented at the moment)
  

The implementation

• Create a main method that demonstrates the various functions. (Do not write a UI)
  
• No persistence is required .
  

• Do output with a System.out.println.
  
• Create appropriate unit tests for the code .
  
• Use latest Java version for the solution .
  

What we will look at

• The OO design of the solution
  
• That the code is neat.
  
• That the code is self documenting. (Use comments when applicable but self documenting naming is equally important )