Deck 11: More Object-Oriented Programming Concepts

Question 1

The most common way to declare a destructor explicitly is to use an identifier that consists of ____.

A) a colon followed by the class name
B) a period followed by the class name
C) a tilde followed by the class name
D) an exclamation mark followed by the class name

Answer 1

C

Question 2

A class that is used as a basis for inheritance is called a ____ class or a superclass.

A) base
B) bottom
C) platform
D) derived

Answer 2

A

Question 3

A(n)____ in a class diagram indicates public access.

A) minus sign
B) diamond
C) plus sign
D) exclamation point

Answer 3

C

Question 4

Any constructor you write must have the same name as the class it constructs,and it cannot have a return type.

Question 5

You can create constructors for a class with or without parameters.

Question 6

It makes sense that a parent class object has access to its child's data and methods.

Question 7

A derived class always ____ case or instance of the more general base class.

A) has a
B) makes a
C) redefines a
D) is a

Question 8

An abstract class is one from which you can create any concrete objects and from which you can inherit.

Question 9

The built-in Exceptions in a programming language can cover every condition that might be an Exception in your applications.

Question 10

The entire list of parent classes from which a child class is derived constitutes the ____ of the subclass.

A) children
B) ancestors
C) subordinates
D) derivatives

Question 11

In object-oriented terminology,"default constructor" means a constructor with a single standard parameter.

Question 12

In some programming languages,such as C#,Visual Basic,and Java,every class you create is a child of one ultimate base class,often called the ____ class.

A) Top
B) Object
C) Ultimate
D) Mega

Question 13

The relationship created with composition is called a(n)____ relationship.

A) is-a
B) has-a
C) with-a
D) child

Question 14

A method's name and a list of argument types together are its ____.

A) signature
B) header
C) profile
D) interface

Question 15

You cannot provide parameters to a destructor;it must have an empty parameter list.

Question 16

If a constructor requires arguments,it is a ____ constructor.

A) reliable
B) private
C) default
D) nondefault

Question 17

When properly used,inheritance always involves a ____ relationship.

A) specific-to-general
B) general-to-specific
C) specific-to-specific
D) general-to-general

Question 18

By using standard component classes,programmers are assured that the GUI components in their programs have the same look and feel as those in other programs.

Question 19

When using existing objects,you need to concentrate only on the interface to those objects,not on the internal instructions that make them work.

Question 20

In OOP languages,a default constructor is created automatically by the compiler for every class you write.

Question 21

The capability to inherit from more than one class is called ____ inheritance.

A) poly
B) multiple
C) branch
D) dual

Question 22

Programmers use the phrase ____ to describe what happens when worthless or invalid input causes inaccurate or unrealistic results.

A) WIGO
B) GOGI
C) LIFO
D) GIGO

Question 23

In object-oriented terminology,the generic name used for errors is ____.

A) bugs
B) undefined branches
C) interfaces
D) exceptions

Question 24

Object-oriented programs employ a more specific group of techniques for handling errors called ____.

A) exception raising
B) exception management
C) exception handling
D) garbage collection

Question 25

Classes that depend on field names from parent classes are said to be ____ because they are prone to errors.

A) robust
B) innovative
C) fragile
D) constructive

Question 26

When you create a segment of code in which something might go wrong,you place the code in a ____ block.

A) throw
B) hold
C) try
D) catch

Question 27

____________________ is the mechanism by which a child class method is used by default when a parent class contains a method with the same signature.

Question 28

When a data field within a class is ____,no outside class can use it-including a child class.

A) reliable
B) fragile
C) private
D) protected

Question 29

When using ____________________,you can develop new classes more quickly by extending classes that already exist and work.

Question 30

When you purchase or download a(n)____ for an object-oriented programming language,it comes packaged with many predefined,built-in classes.

A) compiler
B) IDE
C) sunny day case
D) interpreter

Question 31

Code that has already been tested and used in a variety of situations is said to be ____.

A) protected
B) private
C) overloaded
D) reliable

Question 32

Libraries,collections of classes that serve related purposes,are also called ____________________.

Question 33

An instance of a class becomes eligible for destruction when it is no longer possible for any code to use it-that is,when it goes out of ____________________.

Question 34

If an exception is thrown,it is passed to a block of code that can ____,which means to receive it in a block that can handle the problem.

A) catch the exception
B) raise the exception
C) hold the exception
D) try the exception

Question 35

In traditional programming,probably the most often used error-handling outcome was to ____.

A) terminate the program in which the offending statement occurred
B) ignore the error
C) handle the error
D) ask the user for additional input

Question 36

____ are stored collections of classes that serve related purposes

A) Libraries
B) Constructors
C) IDE
D) Destructors

Question 37

By using ____,you can use reasonable,easy-to-remember names for methods and concentrate on their purpose rather than on memorizing different method names.

A) inheritance
B) inference
C) polymorphism
D) relationships

Question 38

You almost always code at least one catch block immediately following a(n)____________________ block.

Question 39

Programmers sometimes refer to a situation in which nothing goes wrong as the ____ case.

A) rainbow day
B) sunny day
C) cloudy day
D) pessimistic

Question 40

In several languages,the visual development environment is known by the acronym ____.

A) IDE
B) XML
C) ODI
D) IPE

Question 41

Match each term with a statement below.


-A method that has the same name as a class and that establishes an object

A)exceptions
B)composition
C)abstract
D)try block
E)destructor
F)libraries
G)catch block
H)protected access specifier
I)throw statement
J)constructor

Question 42

Explain how to create your own throwable Exception.

Question 43

Match each term with a statement below.


-A block of code you attempt to execute while acknowledging that an exception might occur

A)exceptions
B)composition
C)abstract
D)try block
E)destructor
F)libraries
G)catch block
H)protected access specifier
I)throw statement
J)constructor

Question 44

Describe the components of a try block.

Question 45

Explain composition.

Question 46

Match each term with a statement below.


-Contains the actions you require when an instance of a class is destroyed

A)exceptions
B)composition
C)abstract
D)try block
E)destructor
F)libraries
G)catch block
H)protected access specifier
I)throw statement
J)constructor

Question 47

Match each term with a statement below.


-When a class contains objects of another class

A)exceptions
B)composition
C)abstract
D)try block
E)destructor
F)libraries
G)catch block
H)protected access specifier
I)throw statement
J)constructor

Question 48

Discuss exception handling.

Question 49

Match each term with a statement below.


-Sends an Exception object out of the current code block or method so it can be handled elsewhere

A)exceptions
B)composition
C)abstract
D)try block
E)destructor
F)libraries
G)catch block
H)protected access specifier
I)throw statement
J)constructor

Question 50

Match each term with a statement below.


-Collections of classes that serve related purposes

A)exceptions
B)composition
C)abstract
D)try block
E)destructor
F)libraries
G)catch block
H)protected access specifier
I)throw statement
J)constructor

Question 51

List three advantages of creating a useful,extendable superclass.

Question 52

Match each term with a statement below.


-A class from which you cannot create any concrete objects,but from which you can inherit

A)exceptions
B)composition
C)abstract
D)try block
E)destructor
F)libraries
G)catch block
H)protected access specifier
I)throw statement
J)constructor

Question 53

Explain inheritance.

Question 54

Discuss the general principle of exception handling in object-oriented programming.

Question 55

Explain constructors.

Question 56

List the elements you would use to create a catch block.

Question 57

Match each term with a statement below.


-A segment of code that can handle an exception that might be thrown by the try block that precedes it

A)exceptions
B)composition
C)abstract
D)try block
E)destructor
F)libraries
G)catch block
H)protected access specifier
I)throw statement
J)constructor

Question 58

Match each term with a statement below.


-Errors in object-oriented languages

A)exceptions
B)composition
C)abstract
D)try block
E)destructor
F)libraries
G)catch block
H)protected access specifier
I)throw statement
J)constructor

Question 59

Match each term with a statement below.


-Used when you want no outside classes to be able to use a data field,except classes that are children of the original class

A)exceptions
B)composition
C)abstract
D)try block
E)destructor
F)libraries
G)catch block
H)protected access specifier
I)throw statement
J)constructor

Question 60

Describe the Object class.