Question 1

What is the purpose of class constructors?

Accepted Answer

A)  To initiate private access modifiers 
B)  To return a void 
C)  To initialize the instance variables of the new object 
D)  All of these are correct. 
A)  To initiate private access modifiers 
B)  To return a void 
C)  To initialize the instance variables of the new object 
D)  All of these are correct.

Question 2

Accessor methods are void methods.

Accepted Answer

A) True 
 B)False

Question 3

Which access modifier can be referenced by methods of the same class only?

Accepted Answer

A)  Public 
B)  Private 
C)  Protected 
D)  None of these is correct. 
A)  Public 
B)  Private 
C)  Protected 
D)  None of these is correct.

Question 4

The body of a method must be surrounded by curly braces.

Accepted Answer

A) True 
 B)False

Question 5

price is an instance variable of a class. Inside the method public void change( int price ), how do we refer to the instance variable price and not the parameter price?

Accepted Answer

The answer of price is an instance variable of a...

Question 6

The reference __________ refers to the object reference with which this method has been called.

Accepted Answer

The answer of The reference __________ refers to the object...

Question 7

The enum objects are instantiated as __________ objects.

Accepted Answer

The answer of The enum objects are instantiated as __________...

Question 8

The __________ method is called automatically when an object reference is used as a String.

Accepted Answer

A)  enum 
B)  toString 
C)  overriding 
D)  getName 
A)  enum 
B)  toString 
C)  overriding 
D)  getName

Question 9

It is possible to create user-defined classes in Java.

Accepted Answer

A) True 
 B)False

Question 10

When you define a static variable for your class, it is better to define its accessor and mutator methods as class methods.

Accepted Answer

A) True 
 B)False

Question 11

A parameter to a mutator method with the same name as the instance variable being changed hides the instance variable.

Accepted Answer

A) True 
 B)False

Question 12

Mutator methods can be void methods or can return the reference this.

Accepted Answer

A) True 
 B)False

Question 13

An instance method can reference which of the following?

Accepted Answer

A)  Class variables 
B)  Instance variables 
C)  Class methods 
D)  All of these are correct. 
A)  Class variables 
B)  Instance variables 
C)  Class methods 
D)  All of these are correct.

Question 14

static methods can reference non-static variables.

Accepted Answer

A) True 
 B)False

Question 15

A method parameter or local variable that has the same name as an instance variable will __________ that instance variable.

Accepted Answer

The answer of A method parameter or local variable that...

Question 16

Suppose Angelica ran a program with multiple constructors and got a compiler error. How could she improve her program to avoid the error?

Accepted Answer

She needs to make su

Question 17

What will happen if you do not put curly braces around a method body?

Accepted Answer

A)  You will get the message illegal start of expression. 
B)  You will get the message ';' expected. 
C)  You will get one or more compiler errors. 
D)  All of these are correct. 
A)  You will get the message illegal start of expression. 
B)  You will get the message ';' expected. 
C)  You will get one or more compiler errors. 
D)  All of these are correct.

Question 18

How should slashes and asterisks be used in a Javadoc comment?

Accepted Answer

A)  Start with /* and end it with /**. 
B)  Start with /* and end with */. 
C)  Start with /** and end with */. 
D)  None of these is correct. 
A)  Start with /* and end it with /**. 
B)  Start with /* and end with */. 
C)  Start with /** and end with */. 
D)  None of these is correct.

Question 19

A package statement uses the keyword __________.

Accepted Answer

The answer of A package statement uses the keyword __________....

Question 20

Which of the following is an advantage of providing multiple constructors?

Accepted Answer

A)  It allows the method to skip the default constructor. 
B)  It gives the client the ability to avoid overloading the method. 
C)  It gives the client a choice of ways to create an object. 
D)  None of these is correct. 
A)  It allows the method to skip the default constructor. 
B)  It gives the client the ability to avoid overloading the method. 
C)  It gives the client a choice of ways to create an object. 
D)  None of these is correct.

What is the purpose of class constructors?

Accessor methods are void methods.

Which access modifier can be referenced by methods of the same class only?

The body of a method must be surrounded by curly braces.

price is an instance variable of a class. Inside the method public void change( int price ), how do we refer to the instance variable price and not the parameter price?

The reference __________ refers to the object reference with which this method has been called.

The enum objects are instantiated as __________ objects.

The __________ method is called automatically when an object reference is used as a String.

It is possible to create user-defined classes in Java.

When you define a static variable for your class, it is better to define its accessor and mutator methods as class methods.

A parameter to a mutator method with the same name as the instance variable being changed hides the instance variable.

Mutator methods can be void methods or can return the reference this.

An instance method can reference which of the following?

static methods can reference non-static variables.

A method parameter or local variable that has the same name as an instance variable will __________ that instance variable.

Suppose Angelica ran a program with multiple constructors and got a compiler error. How could she improve her program to avoid the error?

What will happen if you do not put curly braces around a method body?

How should slashes and asterisks be used in a Javadoc comment?

A package statement uses the keyword __________.

Which of the following is an advantage of providing multiple constructors?

Introduction to Programming and the Java Language

Programming Building Blocks- Java Basics

Object-Oriented Programming, Part 1: Using Classes

Introduction to Graphical Applications

Flow of Control, Part 1: Selection

Flow of Control, Part 2: Looping

Single-Dimensional Arrays

Multidimensional Arrays and the Arraylist Class

Object-Oriented Programming, Part 3: Inheritance, Polymorphism, and Interfaces

Exceptions, and Input Output Operations

Graphical User Interfaces Using Java FX

Recursion

An Introduction to Data Structures

Running Time Analysis

RGB Colors, Decimal Conversion, Java Naming, and Random Number Generation

Filters

Exam 7: Object-Oriented Programming, Part 2: User-Defined Classes

What is the purpose of class constructors?

Accessor methods are void methods.

Which access modifier can be referenced by methods of the same class only?

The body of a method must be surrounded by curly braces.

price is an instance variable of a class. Inside the method public void change( int price ), how do we refer to the instance variable price and not the parameter price?

The reference __________ refers to the object reference with which this method has been called.

The enum objects are instantiated as __________ objects.

The __________ method is called automatically when an object reference is used as a String.

It is possible to create user-defined classes in Java.

When you define a static variable for your class, it is better to define its accessor and mutator methods as class methods.

A parameter to a mutator method with the same name as the instance variable being changed hides the instance variable.

Mutator methods can be void methods or can return the reference this.

An instance method can reference which of the following?

static methods can reference non-static variables.

A method parameter or local variable that has the same name as an instance variable will __________ that instance variable.

Suppose Angelica ran a program with multiple constructors and got a compiler error. How could she improve her program to avoid the error?

What will happen if you do not put curly braces around a method body?

How should slashes and asterisks be used in a Javadoc comment?

A package statement uses the keyword __________.

Which of the following is an advantage of providing multiple constructors?

Introduction to Programming and the Java Language

Programming Building Blocks- Java Basics

Object-Oriented Programming, Part 1: Using Classes

Introduction to Graphical Applications

Flow of Control, Part 1: Selection

Flow of Control, Part 2: Looping

Single-Dimensional Arrays

Multidimensional Arrays and the Arraylist Class

Object-Oriented Programming, Part 3: Inheritance, Polymorphism, and Interfaces

Exceptions, and Input Output Operations

Graphical User Interfaces Using Java FX

Recursion

An Introduction to Data Structures

Running Time Analysis

RGB Colors, Decimal Conversion, Java Naming, and Random Number Generation

Filters