Question 10.05 pts

If A "Is-A" B, what else can we say about the relationship between class A and class B?

Class A extends class B

Class A inherits from class B

Class A derives from class B.

None of the above.

All of the above.

Flag this Question

Question 20.05 pts

What tool is used to show inheritance or composition relationships among classes.

a class diagram

a flow chart

an object diagram

a family tree

Flag this Question

Question 30.05 pts

Which of the following is a specialized version of a class.

an ancestor

a subclass

a superclass

class Object

class Class

Flag this Question

Question 40.05 pts

Which of the following statements is true?

Objects NEVER change the class to which they belong.

In some situations, a variable may be bound to DIFFERENT types of objects.

The behavior of any object is determined by the OBJECT'S CLASS and not by the data type of the variable that references it.

All of the above.

None of the above.

Flag this Question

Question 50.05 pts

Given this start to a class definition: public class Beta extends Alpha { ... } What is true about instance variables from Alpha?

Class Beta must redeclare all of Alpha's instance variables.

They should not be redeclared in Beta.

The Beta class should redeclare only those instance variables from Alpha that it wants.

Class Beta should redeclare only the private instance variables from Alpha.

None of the above