CHAPTER 31 --- Designing a Class (Miles per Gallon)

This chapter contains another example of designing a class, and then using objects of that type. The class will be named Car, and will be a simplified version of a miles-per-gallon calculator.

Like the HelloObject class of the previous chapter, the Car class will be simple, so that you can concentrate on the ideas of object oriented programming.

Chapter Topics:

• How classes are documented.
• Writing a class definition.
• Instance variables.
• Using instance variables in a method.
• Constructors.
• Constructor parameter lists.

QUESTION 1:

What three values are you likely to use in calculating miles per gallon for a car?