Question

Create a class named Billing that includes three overloaded computeBill() methods for a photo book store.

• When computeBill() receives a single parameter, it represents the price of one photo book ordered. Add 8% tax, and return the total due.

• When computeBill() receives two parameters, they represent the price of a photo book and the quantity ordered. Multiply the two values, add 8% tax, and return the total due.

• When computeBill() receives three parameters, they represent the price of a photo book, the quantity ordered, and a coupon value. Multiply the quantity and price, reduce the result by the coupon value, and then add 8% tax and return the total due.

public class Billing {

    final static double TAX = 0.08;

    public static void main(String[] args) {

        final double HIGHPRICE = 24.99;

        final double MEDPRICE = 17.50;

        final double LOPRICE = 10.00;

        final int QUAN1 = 4;

        final int QUAN2 = 6;

        double bill;

        bill = computeBill(HIGHPRICE);

        System.out.println("The total for a photobook that costs $" +

                           HIGHPRICE + " is $" + bill);

        bill = computeBill(MEDPRICE, QUAN1);

        System.out.println("The total for " + QUAN1 +

                           " photobooks that cost $" +

                           MEDPRICE + " is $" + bill);

        bill = computeBill(LOPRICE, QUAN2, 20.00);

        System.out.println("The total for " + QUAN2 +

                           " photobooks that cost $" +

                           LOPRICE + " with a $20 coupon is $" + bill);

    }

    public static double computeBill(double amt) {

        // Write your code here

        double total = amt * 23.95;

        return total;

    }

    public static double computeBill(double amt, int quantity) {

        // Write your code here

        double subtotal = amt * quantity;

        double total = subtotal * 23.95;

        return total;

    }

    public static double computeBill(double amt, int quantity, double coupon) {

        // Write your code here

        double subtotal = amt * quantity;

        subtotal = subtotal -(subtotal * coupon);

        return subtotal;

    }

}

Answer 1

Explanation:

Here is the corrected code which includes all the methods overloaded with their correct implementation as mentioned above.

Code:

public class Billing{

final static double TAX = 0.08;

public static void main(String[] args) {

final double HIGHPRICE = 24.99;

final double MEDPRICE = 17.50;

final double LOPRICE = 10.00;

final int QUAN1 = 4;

final int QUAN2 = 6;

double bill;

bill = computeBill(HIGHPRICE);

System.out.println("The total for a photobook that costs $" +

HIGHPRICE + " is $" + bill);

bill = computeBill(MEDPRICE, QUAN1);

System.out.println("The total for " + QUAN1 +

" photobooks that cost $" +

MEDPRICE + " is $" + bill);

bill = computeBill(LOPRICE, QUAN2, 20.00);

System.out.println("The total for " + QUAN2 +

" photobooks that cost $" +

LOPRICE + " with a $20 coupon is $" + bill);

}

public static double computeBill(double amt) {

// Write your code here
  
double tax = (0.08 * amt);
  
double total = amt + tax;
  
return total;

}

public static double computeBill(double amt, int quantity) {

// Write your code here

double subtotal = amt * quantity;
  
double tax = (0.08 * subtotal);

double total = subtotal + tax;

return total;

}

public static double computeBill(double amt, int quantity, double coupon) {

// Write your code here

double subtotal = amt * quantity;

subtotal = subtotal - coupon;
  
double tax = (0.08 * subtotal);

double total = subtotal + tax;

return total;

}

}

output:

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