chap 6

Question 1

True or false: Instance methods do not have the key word static in their headers

Answer 1

True

Question 2

A reference variable stores a ________

Answer 2

memory address

ex:
// Creating an object of the class
MyClass myObject = new MyClass();

// The reference variable ‘myObject’ stores the memory address of the object

Question 3

data hiding (which means that critical data stored inside the object is protected from code outside the object) is accomplished in java by _____.

a) using the private access specifier on the class methods
b) using the private access specifier on the class definition
c) using the private access specifier on the class fields
d) using the public access specifier on the class methods

Answer 3

c) using the private access specifier on the class fields

Question 4

Overloading means that multiple methods in the same class _____

a) perform the same function
b) have different names but the same parameter list
c) have the same name but different return types
d) have the same name but different parameter lists

Answer 4

d) have the same name but different parameter lists

Question 5

When you work with a ____. you are using a storage location that holds a piece of data.

a) primitive variable
b) numeric literal
c) binary number
d) reference variable

Answer 5

a) primitive variable

Question 6

True or False, a class is not an object. It is a description of an object.

Answer 6

True

Question 7

What is involved in identifying the classes to be used when developing an object-oriented application

Answer 7

Writing a description of the problem domain

Identifying all of the nouns

Refining the list of Nouns