Android How to Program, 3/e

Answers to Self-Review Exercises (Sections G.1G.5)

1. G.1

   1. Inheritance.

   2. public and protected.

   3. is-a or inheritance.

   4. has-a or composition.

   5. hierarchical.

   6. public.

   7. constructor.

   8. super.

2. G.2

   1. True.

   2. False. A has-a relationship is implemented via composition. An is-a relationship is implemented via inheritance.

   3. False. This is an example of a has-a relationship. Class Car has an is-a relationship with class Vehicle.

   4. False. This is known as overriding, not overloading—an overloaded method has the same name, but a different signature.