Deck 7: Object-Oriented Concepts

Question 1

A ____ is a term that describes objects with common attributes.

A)relationship
C)class
B)case
D)method

Answer 1

C

Question 2

Object attributes are often called ____ to help distinguish them from other variables you might use.

A)constructors
C)fields
B)instances
D)records

Answer 2

C

Question 3

The set of all the values or contents of a class object's instance variables is also known as its ____.

A)classification
C)group
B)state
D)core

Answer 3

B

Question 4

With object-oriented programming, once you create an object, you can develop new objects that possess all the traits of the original object, plus any new traits you desire.

Question 5

The purpose of set methods is to set the values of data fields within the class.

Question 6

Creating multiple methods with the same name, which will act differently and appropriately when used with different types of objects, is known as polymorphism.

Question 7

With well-written methods that belong to classes you use, you need not understand how they work internally to be able to use them.

Question 8

____ is the process of acquiring the traits of one's predecessors.

A)Heritage
C)Inheritance
B)Legacy
D)Encapsulation

Question 9

A program or class that instantiates methods of another prewritten class is a class client or class user.

Question 10

A class can contain another class's objects as data members.

Question 11

A this reference is an automatically created variable that holds the address of an object and passes it to an instance method whenever the method is called.

Question 12

Declaring a class creates actual objects.

Question 13

A(n) ____ is one instance of a class.

A)method
C)instantiation
B)object
D)attribute

Question 14

The data components of a class that belong to every instantiated object are the class's ____ variables.

A)instance
C)functional
B)initial
D)method

Question 15

When you think in an object-oriented manner, everything is an object, and every object is a member of a method.

Question 16

A program or class that instantiates objects of another prewritten class is a class client or ____.

A)client user
C)class id
B)client id
D)class user

Question 17

Everything is an object, and every object is a member of a ____.

A)class
C)case
B)method
D)process

Question 18

In addition to their attributes, class objects have methods associated with them, and every object that is an instance of a class possesses the same methods.

Question 19

____ is the concept that other classes should not alter an object's attributes-only the methods of an object's own class should have that privilege.

A)Information hiding
C)Data holding
B)Information holding
D)Static data

Question 20

The concept of a class is useful because of its ____.

A)usability
C)functionality
B)interchangeability
D)reusability

Question 21

When you write object-oriented programs, an object is a(n) ____________________ of a class.

Question 22

The process of combining all of an object's attributes and methods into a single package is called ____________________.

Question 23

When using ____, you can develop new classes more quickly by extending existing classes that already work.

A)inheritance
C)encapsulation
B)polymorphism
D)construction

Question 24

The relationship created when using a class object within another class object is also called a(n) ____ relationship.

A)was-is
C)has-a
B)has-is
D)is-a

Question 25

An ____ is the adjective that defines the type of access that outside classes will have to the attribute or method.

A)attribute definer
C)access definer
B)attribute specifier
D)access specifier

Question 26

Using a class object within another class object is known as ____.

A)nesting
C)building
B)circular referencing
D)composition

Question 27

Programmers often use a ____ to illustrate class features or to help plan them.

A)class diagram
C)class illustration
B)polymorphic diagram
D)flowchart

Question 28

Object-oriented programmers usually specify that their data fields will have ____ access.

A)limited
C)private
B)transparent
D)public

Question 29

A ____ reference is an automatically created variable that holds the address of an object and passes it to an instance method whenever the method is called.

A)key
C)that
B)public
D)this

Question 30

A ____ is a set of program statements that tells you the characteristics of the class's objects and the methods that can be applied to its objects.

A)class set
C)class identification
B)class definition
D)class group

Question 31

A ____ is an environment in which you can create programs by dragging components such as buttons and labels onto a screen and arranging them visually.

A)visual development environment
C)visual design environment
B)virtual development environment
D)virtual design environment

Question 32

____________________ is the process of acquiring the traits of one's predecessors.

Question 33

A class diagram consists of a ____ divided into three sections.

A)square
C)circle
B)rectangle
D)triangle

Question 34

All objects have ____________________, which are the characteristics that define them as part of a particular class.

Question 35

A(n) ____________________ is a category of things.

Question 36

A(n) ____ method operates appropriately for each separate instance of a class.

A)instance
C)object
B)starter
D)defining

Question 37

In class diagrams, a ____ sign precedes the items that are private.

A)plus
C)colon
B)semicolon
D)minus

Question 38

The ability to use methods without knowing the details of their contents is a feature of ____.

A)abstraction
C)inheritance
B)encapsulation
D)construction

Question 39

Class diagrams are a type of ____ diagram.

A)Unified Illustration Language
C)Object-Oriented Modeling Language
B)Unified Modeling Language
D)Unified Pseudocode Language

Question 40

A(n) ____ is just an abstract description of what an object will be like if any objects are ever actually instantiated.

A)class
C)identifier
B)object
D)entity

Question 41

In older object-oriented programming languages, ____________________ data types, such as numbers and characters, are distinguished from objects that are class types.

Question 42

The term ____________________ implies that a type's data can be accessed only through methods.

Question 43

The purpose of a(n) ____________________ method is to return a value to the world outside the class.

Question 44

No values need to be passed into a(n) ____________________ method, and no value is returned from it because this method does not communicate with the outside world.

Question 45

A(n) ____________________ method is another name for a set method.

Question 46

____________________ methods do not have this references, and do not need objects to exist to be called.

Question 47

____________________ are collections of classes that serve related purposes.

Question 48

Most object-oriented programmers usually specify object data fields to have ____________________ access.

Question 49

Every class must have a(n) ____________________, and can optionally contain data and methods.

Question 50

By convention, a(n) ____________________ lists the names of the data items first, followed by a colon and their data type.