Chapter 9: Inheritance

Question 1

inheritance

Answer 1

The is-a relationship between a more general superclass and a more specialized subclass.

Question 2

superclass

Answer 2

A general class from which a more specialized class (a subclass) inherits.

Question 3

subclass

Answer 3

A class that inherits variables and methods from a superclass but may also add instance variables, add methods, or redefine methods.

Question 4

override

Answer 4

Redefining a method in a subclass.

Question 5

dynamic method lookup

Answer 5

Selecting a method to be invoked at run time. In Java, dynamic method lookup considers the class of the implicit parameter object to select the appropriate method.

Question 6

polymorphism

Answer 6

Selecting a method among several methods that have the same name on the basis of the actual types of the implicit parameters.

Question 7

abstract class

Answer 7

A class that cannot be instantiated.

Question 8

concrete class

Answer 8

A class that can be instantiated.