Question 1

Explain the modifiers public,protected and private.

Accepted Answer

The public modifier signifies that an in

Question 2

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 3

A derived class is also called a

Accepted Answer

A) sub class 
B) super class 
C) base class 
D) all of the above 
A) sub class 
B) super class 
C) base class 
D) all of the above

Question 4

The keyword extends indicates polymorphism.

Accepted Answer

A) True 
 B)False

Question 5

A derived class contains only public instance variables and public methods from the base class.

Accepted Answer

A) True 
 B)False

Question 6

A base class is synonymous with a:

Accepted Answer

A) Child class 
B) Parent class 
C) Derived class 
D) Sub class 
A) Child class 
B) Parent class 
C) Derived class 
D) Sub class

Question 7

Explain how parent and child classes are related to base and derived classes.

Accepted Answer

A base class is ofte

Question 8

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 9

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 10

The equals method for a class should have _________ as the type of its one parameter.

Accepted Answer

A) String 
B) Object 
C) Integer 
D) Double 
A) String 
B) Object 
C) Integer 
D) Double

Question 11

An instance variable (or method)that is private in a base class is accessible by name in the definition of a method in any other class.

Accepted Answer

A) True 
 B)False

Question 12

Inheritance is the process by which a new class - known as a _________ - is created from another class,called the _____________.

Accepted Answer

A) base class,derived class 
B) derived class,base class 
C) inherited class,base class 
D) base class,inherited class 
A) base class,derived class 
B) derived class,base class 
C) inherited class,base class 
D) base class,inherited class

Question 13

What is package access?

Accepted Answer

If an instance variable or method is not

Question 14

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 15

What does the instanceof operator do?

Accepted Answer

The instanceof opera

Question 16

Create a class to represent a Rectangle.Your class should contain instance variables for length and width,as well as member method to calculate the area and perimeter.

Accepted Answer

public class Rectangle { private double

Question 17

The special syntax for invoking a constructor of the base class is:

Accepted Answer

A) super() 
B) base() 
C) parent() 
D) child() 
A) super() 
B) base() 
C) parent() 
D) child()

Question 18

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

Question 19

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 20

Explain what a call to super()does in a constructor of a derived class.

Accepted Answer

When super()is used in a const

Explain the modifiers public,protected and private.

The Object class contains the method:

A derived class is also called a

The keyword extends indicates polymorphism.

A derived class contains only public instance variables and public methods from the base class.

A base class is synonymous with a:

Explain how parent and child classes are related to base and derived classes.

A method or instance variable modified by protected:

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

The equals method for a class should have _________ as the type of its one parameter.

An instance variable (or method)that is private in a base class is accessible by name in the definition of a method in any other class.

Inheritance is the process by which a new class - known as a _ - is created from another class,called the _____.

What is package access?

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

What does the instanceof operator do?

Create a class to represent a Rectangle.Your class should contain instance variables for length and width,as well as member method to calculate the area and perimeter.

The special syntax for invoking a constructor of the base class is:

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.

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

Explain what a call to super()does in a constructor of a derived class.

Getting Started

Console Input and Output

Flow of Control

Defining Classes I

Defining Classes Ii

Arrays

Console Input and Output

Exception Handling

File IO

Uml and Patterns

Interfaces and Inner Classes

Generics and the Arraylist Class

Linked Data Structures

Collections and Iterators

Swing I

Swing II

Java Never Ends

Recursion

Applets

Filters

Exam 7: Inheritance

Explain the modifiers public,protected and private.

The Object class contains the method:

A derived class is also called a

The keyword extends indicates polymorphism.

A derived class contains only public instance variables and public methods from the base class.

A base class is synonymous with a:

Explain how parent and child classes are related to base and derived classes.

A method or instance variable modified by protected:

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

The equals method for a class should have _________ as the type of its one parameter.

An instance variable (or method)that is private in a base class is accessible by name in the definition of a method in any other class.

Inheritance is the process by which a new class - known as a _________ - is created from another class,called the _____________.

What is package access?

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

What does the instanceof operator do?

Create a class to represent a Rectangle.Your class should contain instance variables for length and width,as well as member method to calculate the area and perimeter.

The special syntax for invoking a constructor of the base class is:

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.

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

Explain what a call to super()does in a constructor of a derived class.

Getting Started

Console Input and Output

Flow of Control

Defining Classes I

Defining Classes Ii

Arrays

Console Input and Output

Exception Handling

File IO

Uml and Patterns

Interfaces and Inner Classes

Generics and the Arraylist Class

Linked Data Structures

Collections and Iterators

Swing I

Swing II

Java Never Ends

Recursion

Applets

Filters

Inheritance is the process by which a new class - known as a _ - is created from another class,called the _____.