Question 1

How are real-life examples of inheritance similar to object-oriented programming inheritance?

Accepted Answer

You might choose plants and animals based on inheritance. You plant impatiens next to your house because of your shady street location; you adopt a Doberman Pinscher because you need a watchdog. Every individual plant and pet has slightly different characteristics; but within a species, you can count on many consistent inherited attributes and behaviors. Similarly, the classes you create in object-oriented programming languages can inherit data and methods from existing classes. When you create a class by making it inherit from another class, you are provided with data fields and methods automatically.

Question 2

When you instantiate an object that is a member of a subclass, how many constructors are called?

Accepted Answer

When you instantiate an object that is a member of a subclass, you are actually calling at least two constructors: the constructor for the base class and the constructor for the extended, derived class. When you create any subclass object, the superclass constructor must execute first, and then the subclass constructor executes.

Question 3

If a programming language does not support ____, the language is not considered object-oriented.

Accepted Answer

A)  syntax 
B)  applets 
C)  loops 
D)  polymorphism 
A)  syntax 
B)  applets 
C)  loops 
D)  polymorphism D

Question 4

In a UML diagram, an inheritance relationship is indicated with an arrow that points from the original class  to the descendant class .

Accepted Answer

A) True 
 B)False

Question 5

When you employ ____, your data can be altered only by the methods you choose and only in ways that you can control.

Accepted Answer

A)  virtual method calls 
B)  polymorphism 
C)  information hiding 
D)  inlining 
A)  virtual method calls 
B)  polymorphism 
C)  information hiding 
D)  inlining

Question 6

Which statement correctly declares a sedan object of the Car class?

Accepted Answer

A)  sedan Car = new sedan(); 
B)  Car sedan = new sedan (); 
C)  Car sedan = new Car(); 
D)  new sedan() =Car (); 
A)  sedan Car = new sedan(); 
B)  Car sedan = new sedan (); 
C)  Car sedan = new Car(); 
D)  new sedan() =Car ();

Question 7

Sometimes the superclass data fields and methods are not entirely appropriate for the subclass objects; in these cases, you want to ____ the parent class members.

Accepted Answer

A)  negate 
B)  overrule 
C)  override 
D)  hide 
A)  negate 
B)  overrule 
C)  override 
D)  hide

Question 8

An error is generated by the compiler when you attempt to override a static method with a nonstatic method.

Accepted Answer

A) True 
 B)False

Question 9

Subclasses are more specific than the superclass they extend.

Accepted Answer

A) True 
 B)False

Question 10

In Java, all instance method calls are ____ by default.

Accepted Answer

A)  private 
B)  protected 
C)  virtual method calls 
D)  inherited 
A)  private 
B)  protected 
C)  virtual method calls 
D)  inherited

Question 11

Using a class named Student , write the statement to create a yearOne object of the Student class.

Accepted Answer

Student ye

Question 12

When you create any subclass object, the subclass constructor  must execute first, and then the superclass constructor  executes.

Accepted Answer

A) True 
 B)False

Question 13

If a ____ method has the same name as a parent class method and you use the name with a child class object, the child method hides the original.

Accepted Answer

A)  final 
B)  static 
C)  protected 
D)  private 
A)  final 
B)  static 
C)  protected 
D)  private

Question 14

____ polymorphism is the ability of one method to work appropriately for subclasses of the same parent class.

Accepted Answer

A)  Subtype 
B)  Name 
C)  Supertype 
D)  Override 
A)  Subtype 
B)  Name 
C)  Supertype 
D)  Override

Question 15

What happens when you write your own constructor in Java and what must you pay attention to?

Accepted Answer

When you write your own constructor, you

Question 16

The above code will generate an error message when compiling. Explain the error message and why it occurs.

Accepted Answer

When a class is declared to be final , a

Question 17

When a protected data field or method is created, it can be used within its own class or in any classes extended from that class; but it cannot be used by outside classes.

Accepted Answer

A) True 
 B)False

Question 18

What is the process of inlining and how is it accomplished in Java?

Accepted Answer

Because a final method's definition can

Question 19

Match between columns
                        Premises: Graphical language used to describe classes and methods

Accepted Answer

The Answer of information hiding and inheritance and fragile and is...

Question 20

You are never aware that ____ is taking place; the compiler chooses to use this procedure to save the overhead of calling a method.

Accepted Answer

A)  information hiding 
B)  polymorphism 
C)  overriding 
D)  inlining 
A)  information hiding 
B)  polymorphism 
C)  overriding 
D)  inlining

How are real-life examples of inheritance similar to object-oriented programming inheritance?

When you instantiate an object that is a member of a subclass, how many constructors are called?

If a programming language does not support ____, the language is not considered object-oriented.

In a UML diagram, an inheritance relationship is indicated with an arrow that points from the original class to the descendant class .

When you employ ____, your data can be altered only by the methods you choose and only in ways that you can control.

Which statement correctly declares a sedan object of the Car class?

Sometimes the superclass data fields and methods are not entirely appropriate for the subclass objects; in these cases, you want to ____ the parent class members.

An error is generated by the compiler when you attempt to override a static method with a nonstatic method.

Subclasses are more specific than the superclass they extend.

In Java, all instance method calls are ____ by default.

Using a class named Student , write the statement to create a yearOne object of the Student class.

When you create any subclass object, the subclass constructor must execute first, and then the superclass constructor executes.

If a ____ method has the same name as a parent class method and you use the name with a child class object, the child method hides the original.

____ polymorphism is the ability of one method to work appropriately for subclasses of the same parent class.

What happens when you write your own constructor in Java and what must you pay attention to?

The above code will generate an error message when compiling. Explain the error message and why it occurs.

When a protected data field or method is created, it can be used within its own class or in any classes extended from that class; but it cannot be used by outside classes.

What is the process of inlining and how is it accomplished in Java?

You are never aware that ____ is taking place; the compiler chooses to use this procedure to save the overhead of calling a method.

Creating Your First Java Classes

Using Data

Using Methods, Classes and Objects

More Object Concepts

Making Decisions

Looping

Characters, Strings and the Stringbuilder

Arrays

Advanced Array Concepts

Advanced Inheritance Concepts

Exception Handling

File Input and Output

Introduction to Swing Components

Using Javafx and Scene Builder

Filters

Exam 10: Introduction to Inheritance

How are real-life examples of inheritance similar to object-oriented programming inheritance?

When you instantiate an object that is a member of a subclass, how many constructors are called?

If a programming language does not support ____, the language is not considered object-oriented.

In a UML diagram, an inheritance relationship is indicated with an arrow that points from the original class to the descendant class .

When you employ ____, your data can be altered only by the methods you choose and only in ways that you can control.

Which statement correctly declares a sedan object of the Car class?

Sometimes the superclass data fields and methods are not entirely appropriate for the subclass objects; in these cases, you want to ____ the parent class members.

An error is generated by the compiler when you attempt to override a static method with a nonstatic method.

Subclasses are more specific than the superclass they extend.

In Java, all instance method calls are ____ by default.

Using a class named Student , write the statement to create a yearOne object of the Student class.

When you create any subclass object, the subclass constructor must execute first, and then the superclass constructor executes.

If a ____ method has the same name as a parent class method and you use the name with a child class object, the child method hides the original.

____ polymorphism is the ability of one method to work appropriately for subclasses of the same parent class.

What happens when you write your own constructor in Java and what must you pay attention to?

The above code will generate an error message when compiling. Explain the error message and why it occurs.

When a protected data field or method is created, it can be used within its own class or in any classes extended from that class; but it cannot be used by outside classes.

What is the process of inlining and how is it accomplished in Java?

You are never aware that ____ is taking place; the compiler chooses to use this procedure to save the overhead of calling a method.

Creating Your First Java Classes

Using Data

Using Methods, Classes and Objects

More Object Concepts

Making Decisions

Looping

Characters, Strings and the Stringbuilder

Arrays

Advanced Array Concepts

Advanced Inheritance Concepts

Exception Handling

File Input and Output

Introduction to Swing Components

Using Javafx and Scene Builder

Filters