Chapter 7 - Multiple Choice

Question 1

1. What can you say about the name of a class?

❑ It must start with an uppercase letter.

❑ The convention is to start with an uppercase letter.

Answer 1

The convention is to start with an uppercase letter.

Question 2

2. What can you say about the name of constructors?

❑ They must be the same name as the class name.

❑ They can be any name, just like other methods.

Answer 2

Constructor must be same name as class name

Question 3

3. What is a constructor’s return type?

❑ void

❑ Object

❑ The class name

❑ A constructor does not have a return type.

Answer 3

A constructor does not have a return type

Question 4

10. Mutator methods typically take

❑ no parameter.

❑ one parameter, of the same type as the corresponding field.

Answer 4

one parameter, of the same type as the corresponding field.

Question 5

5. In a class, if a field is private,

❑ it can be accessed directly from any class.

❑ it can be accessed directly only from inside its class.

Answer 5

it can be accessed directly from inside its class

Question 6

6. In a typical class, what is the general recommendation for access modifiers?

❑ Instance variables are private and methods are private.

❑ Instance variables are private and methods are public.

❑ Instance variables are public and methods are private.

❑ Instance variables are public and methods are public.

Answer 6

Instance variables are private and methods are public .

Question 7

8. Accessors and mutators are

❑ instance variables of a class.

❑ used to access and modify field variables of a class from outside the class.

❑ constructor methods.

Answer 7

used to access and modify field variables of a class from outside the class

Question 8

9. Accessor methods typically take

❑ no parameter.

❑ one parameter, of the same type as the corresponding field.

Answer 8

no parameter

Question 9

11. Accessor methods typically

❑ are void methods.

❑ return the same type as the corresponding field.

Answer 9

return the same type as the corresponding field.

Question 10

12. To enable method chaining, mutator methods

❑ return a reference to this object.

❑ return the same type as the corresponding field.

Answer 10

return a reference to this object.

Question 11

14. What is the keyword used for declaring a constant?

❑ static

❑ final

❑ constant

Answer 11

❑ static

Question 12

15. What is the keyword used for declaring a class variable or method?

❑ static

❑ final

❑ class

Answer 12

static