Chapter 14, Object-Oriented Programming Video Solutions, Starting Out with Programming Logic and Design

01:24

Problem 1

What is an object?

Brian Lin

Numerade Educator

01:18

Problem 2

What is encapsulation?

Adam Conner

Numerade Educator

01:18

Problem 3

Why is an object’s internal data usually hidden from outside code?

Jennifer Stoner

Numerade Educator

01:12

Problem 4

What are public methods? What are private methods?

Jennifer Stoner

Numerade Educator

00:19

You hear someone make the following comment: “A blueprint is a design for a
house. A carpenter can use the blueprint to build the house. If the carpenter
wishes, he or she can build several identical houses from the same blueprint.”
Think of this as a metaphor for classes and objects. Does the blueprint represent a class, or does it represent an object?

Ashley Jordon

Numerade Educator

02:01

Problem 6

In this chapter, we use the metaphor of a cookie cutter and cookies that are
made from the cookie cutter to describe classes and objects. In this metaphor,
are objects the cookie cutter, or the cookies?

Aditya Sood

Numerade Educator

02:40

Problem 7

What is an access specifier?

Adam Conner

Numerade Educator

01:38

Problem 8

What access specifier is commonly used with a class’s fields?

Aditya Sood

Numerade Educator

01:43

Problem 9

When a class variable is said to reference an object, what is actually stored in
the class variable?

Adam Conner

Numerade Educator

01:34

Problem 10

What does the New key word do?

Margaret Farmer

Numerade Educator

01:24

Problem 11

What is an accessor? What is a mutator?

Brian Lin

Numerade Educator

02:40

Problem 12

What is a constructor? When does a constructor execute?

Adam Conner

Numerade Educator

02:40

Problem 13

What is a default constructor?

Adam Conner

Numerade Educator

01:10

Problem 14

The typical UML diagram for a class has three sections. What appears in these
three sections?

Heather Zimmers

Numerade Educator

00:49

Problem 15

Suppose a class has a field named description. The field’s data type is
String. How would you indicate the field’s data type in a UML diagram?

Aditya Sood

Numerade Educator

01:19

Problem 16

What symbols do you use in a UML diagram to indicate private and public
access specification?

Abdul Vahid M

Numerade Educator

View

Problem 17

What is a problem domain description?

Nicole Hoffman

Numerade Educator

02:35

Problem 18

What technique was described in this section for finding the classes in a
particular problem?

Alyssa Mae L.

Numerade Educator

03:21

Problem 19

What are classes’ responsibilities?

Noor Ul Ain

Numerade Educator

View

Problem 20

What causes an item of data to become stale?

Rashmi Sinha

Numerade Educator

01:55

Problem 21

In this section, we discussed superclasses and subclasses. Which is the general
class and which is the specialized class?

Anitha Mary

Numerade Educator

02:20

Problem 22

What does it mean to say there is an “is a” relationship between two objects?

Shafiq Rehman

Numerade Educator

02:20

Problem 23

What does a subclass inherit from its superclass?

Vivek Singh

Numerade Educator

01:46

Problem 24

Look at the following pseudocode; which is the first line of a class definition?
What is the name of the superclass? What is the name of the subclass?
Class Canary Extends Bird

Manik Pulyani

Numerade Educator

03:40

Problem 25

Look at the following pseudocode class definitions:
Class Vegetable
Public Module message()
Display "I'm a vegetable."
End Module
End Class
Class Potato Extends Vegetable
Public Module message()
Display "I'm a potato."
End Module
End Class
Given these class definitions, what will the following pseudocode display?
Declare Vegetable v
Declare Potato p
Set v = New Potato()
Set p = New Potato()
Call v.message()
Call p.message()

Harriet O'Brien

Numerade Educator

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