Question 1

Inheritance refers to a very specialized form of a class.

Accepted Answer

A) True 
 B)False  False

Question 2

What are the different ways in which you can check the class of an Object?

Accepted Answer

The method getClass)as well as the operator instanceof may be used to check the class type of an Object.

Question 3

When you define a derived class,you give only the added instance variables and the added methods as well as all the methods from the base class.

Accepted Answer

A) True 
 B)False  False

Question 4

A super class is also called a

Accepted Answer

A) derived class 
B) dominant class 
C) sub class 
D) base class 
A) derived class 
B) dominant class 
C) sub class 
D) base class

Question 5

The keyword extends indicates polymorphism.

Accepted Answer

A) True 
 B)False

Question 6

The Object class contains the method:

Accepted Answer

A) getClass) 
B) toString) 
C) equals) 
D) all of the above 
A) getClass) 
B) toString) 
C) equals) 
D) all of the above

Question 7

What does the instanceof operator do?

Accepted Answer

The instanceof opera

Question 8

What is package access?

Accepted Answer

If an instance variable or method is not

Question 9

What is encapsulation?

Accepted Answer

Encapsulation is synonymous wi

Question 10

Define a derived class to represent an alarm clock.Use the Clock class,created in number 2 above,as your base class.

Accepted Answer

/**
An alarm clock should include a time

Question 11

Define a base class to represent a Clock.Your class should have instance variables for hours,minutes and seconds.

Accepted Answer

public class Clock
{
private int hour;
p

Question 12

Create a test driver to test the functionality of your Rectangle class created in number 14 above.

Accepted Answer

public class RectangleTest
{
public stat

Question 13

You may substitute the keyword this for super)to call a constructor of the derived class.

Accepted Answer

A) True 
 B)False

Question 14

What is an "is a" relationship? How does it apply to the world of objects?

Accepted Answer

An "is a" relationship represents the pr

Question 15

Inheritance promotes code ___________.

Accepted Answer

A) reinvention 
B) reuse 
C) repeats 
D) all of the above 
A) reinvention 
B) reuse 
C) repeats 
D) all of the above

Question 16

Explain the difference between method overloading and method overriding.

Accepted Answer

Overriding refers to redefining a method

Question 17

If an instance variable is not modified by public,protected or private then it is said to have:

Accepted Answer

A) Package access 
B) Default access 
C) Friendly access 
D) All of the above 
A) Package access 
B) Default access 
C) Friendly access 
D) All of the above

Question 18

A method or instance variable modified by protected:

Accepted Answer

A) can not be accessed by name inside its own class definitions. 
B) can not be accessed by name inside any class derived from it. 
C) can not be accessed by name in the definition of any class in the same package. 
D) can not be accessed by name in any other class that is,other than classes named in a-c. ). 
A) can not be accessed by name inside its own class definitions. 
B) can not be accessed by name inside any class derived from it. 
C) can not be accessed by name in the definition of any class in the same package. 
D) can not be accessed by name in any other class that is,other than classes named in a-c. ).

Question 19

The class __________ is an ancestor class of all Java classes.

Accepted Answer

A) String 
B) Object 
C) Math 
D) JFrame 
A) String 
B) Object 
C) Math 
D) JFrame

Question 20

The keyword extends indicates:

Accepted Answer

A) encapsulation 
B) polymorphism 
C) inheritance 
D) none of the above 
A) encapsulation 
B) polymorphism 
C) inheritance 
D) none of the above

Inheritance refers to a very specialized form of a class.

What are the different ways in which you can check the class of an Object?

When you define a derived class,you give only the added instance variables and the added methods as well as all the methods from the base class.

A super class is also called a

The keyword extends indicates polymorphism.

The Object class contains the method:

What does the instanceof operator do?

What is package access?

What is encapsulation?

Define a derived class to represent an alarm clock.Use the Clock class,created in number 2 above,as your base class.

Define a base class to represent a Clock.Your class should have instance variables for hours,minutes and seconds.

Create a test driver to test the functionality of your Rectangle class created in number 14 above.

You may substitute the keyword this for super)to call a constructor of the derived class.

What is an "is a" relationship? How does it apply to the world of objects?

Inheritance promotes code ___________.

Explain the difference between method overloading and method overriding.

If an instance variable is not modified by public,protected or private then it is said to have:

A method or instance variable modified by protected:

The class __________ is an ancestor class of all Java classes.

The keyword extends indicates:

Getting Started

Console Input and Output

Flow of Control

Defining Classes I

Defining Classes II

Arrays

Polymorphism and Abstract Classes

Exception Handling

File IO

Recursion

Uml and Patterns

Interfaces and Inner Classes

Generics and the Arraylist Class

Linked Data Structures

Collections,maps,and Iterators

Swing I

Swing II

Java Never Ends

Applets

Filters

Exam 7: Inheritance

Inheritance refers to a very specialized form of a class.

What are the different ways in which you can check the class of an Object?

When you define a derived class,you give only the added instance variables and the added methods as well as all the methods from the base class.

A super class is also called a

The keyword extends indicates polymorphism.

The Object class contains the method:

What does the instanceof operator do?

What is package access?

What is encapsulation?

Define a derived class to represent an alarm clock.Use the Clock class,created in number 2 above,as your base class.

Define a base class to represent a Clock.Your class should have instance variables for hours,minutes and seconds.

Create a test driver to test the functionality of your Rectangle class created in number 14 above.

You may substitute the keyword this for super)to call a constructor of the derived class.

What is an "is a" relationship? How does it apply to the world of objects?

Inheritance promotes code ___________.

Explain the difference between method overloading and method overriding.

If an instance variable is not modified by public,protected or private then it is said to have:

A method or instance variable modified by protected:

The class __________ is an ancestor class of all Java classes.

The keyword extends indicates:

Getting Started

Console Input and Output

Flow of Control

Defining Classes I

Defining Classes II

Arrays

Polymorphism and Abstract Classes

Exception Handling

File IO

Recursion

Uml and Patterns

Interfaces and Inner Classes

Generics and the Arraylist Class

Linked Data Structures

Collections,maps,and Iterators

Swing I

Swing II

Java Never Ends

Applets

Filters