Polymorphism and Abstract Classes - Absolute Java - page 493

Display 8.2 The Derived Class DiscountSale (part 2 of 2)

39 public double getDiscount()
40 {
41 return discount;

42 }

43 /**
44 Precondition: Discount is nonnegative.
45 */
46 public void setDiscount( double newDiscount)
47 {
48 if (newDiscount >= 0)
49 discount = newDiscount;
50 else
51 {
52 System.out.println("Error: Negative discount.");
53 System.exit(0);
54 }
55 }

56 public String toString()
57 {
58 return (getName() + " Price = $" + getPrice()
59 + " Discount = " + discount + "%\n"
60 + " Total cost = $" + bill());
61 }

62 public boolean equals(Object otherObject)

The rest of the definition of equals is located in Self-Test Exercise 4 .

63 }