Chapter 8, Problem 11E

 Implementation of the derived class “BulkDiscount”:

 The implementation of the “BulkDiscount” class derived from the “DiscountPolicy” abstract class is given below:

• • Declare the “min”, and “percentOff” variables.
• • Define the constructor.
  • ○ Set the values to the declared variables.
• • Define the “computeDiscount” method.
  • ○ If the purchase count is less than minimum, then calculate the “discount” value.
  • ○ Otherwise make “discount” as 0.
• • Finally return the “discount” value.
• • Define the main method.
  • ○ Create an object for the “BulkDiscount” class.
  • ○ Call the “computeDiscount” method with different parameters and display the output.

The creation of the abstract class “DiscountPolicy” is given below:

• • Declare the abstract method “computeDiscount” along with the two parameters “count” and “itemCost”.
  • ○ This method compute and return the discount for the purchase of a given number of single item.

 Program:

 Filename: BulkDicount.java

//definition of "BulkDiscount" class

public class BulkDiscount extends DiscountPolicy

{

    //declare the required variables

    private int mini;

    private double percentOff;

    //definition of constructor

    public BulkDiscount(int minimum, double percent)

    {

        //set the value

        mini = minimum;

        percentOff = percent;

    }

    //definition of "computeDiscount " class

public double computeDiscount(int count, double itemCost)

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