Question 1

If the superclass contains only abstract method declarations,the superclass is used for:

Accepted Answer

A) implementation inheritance. 
B) interface inheritance. 
C) Both. 
D) Neither. 
A) implementation inheritance. 
B) interface inheritance. 
C) Both. 
D) Neither.

Question 2

For which of the following would polymorphism not provide a clean solution?

Accepted Answer

A) A billing program where there is a variety of client types that are billed with different fee structures. 
B) A maintenance log program where data for a variety of types of machines is collected and maintenance schedules are produced for each machine based on the data collected. 
C) A program to compute a 5% savings account interest for a variety of clients. 
D) An IRS program that maintains information on a variety of taxpayers and determines who to audit based on criteria for classes of taxpayers. 
A) A billing program where there is a variety of client types that are billed with different fee structures. 
B) A maintenance log program where data for a variety of types of machines is collected and maintenance schedules are produced for each machine based on the data collected. 
C) A program to compute a 5% savings account interest for a variety of clients. 
D) An IRS program that maintains information on a variety of taxpayers and determines who to audit based on criteria for classes of taxpayers.

Question 3

Which of the following statements about interfaces is false?

Accepted Answer

A) An interface describes a set of methods that can be called on an object,providing a default implementation for the methods. 
B) An interface describes a set of methods that can be called on an object,not providing concrete implementation for the methods. 
C) Interfaces are useful when attempting to assign common functionality to possibly unrelated classes. 
D) Once a class implements an interface,all objects of that class have an is-a relationship with the interface type. 
A) An interface describes a set of methods that can be called on an object,providing a default implementation for the methods. 
B) An interface describes a set of methods that can be called on an object,not providing concrete implementation for the methods. 
C) Interfaces are useful when attempting to assign common functionality to possibly unrelated classes. 
D) Once a class implements an interface,all objects of that class have an is-a relationship with the interface type.

Question 4

An interface may contain:

Accepted Answer

A) private static data and public abstract methods. 
B) only public abstract methods. 
C) public static final data and public abstract methods. 
D) private static data and public final methods. 
A) private static data and public abstract methods. 
B) only public abstract methods. 
C) public static final data and public abstract methods. 
D) private static data and public final methods.

Question 5

Which keyword is used to specify that a class will define the methods of an interface?

Accepted Answer

A) uses. 
B) implements. 
C) defines. 
D) extends. 
A) uses. 
B) implements. 
C) defines. 
D) extends.

If the superclass contains only abstract method declarations,the superclass is used for:

For which of the following would polymorphism not provide a clean solution?

Which of the following statements about interfaces is false?

An interface may contain:

Which keyword is used to specify that a class will define the methods of an interface?

Introduction to Computers and Java

Introduction to Java Applications

Introduction to Classes and Objects

Control Statements: Part 1

Control Statements: Part 2

Methods: a Deeper Look

Arrays and Arraylists

Classes and Objects: a Deeper Look

Object Oriented Programming: Inheritance

Exception Handling

Atm Case Study,part 1: Object-Oriented Design With the Uml

Atm Case Study,part 2: Implementing an Object-Oriented Design

Gui Components: Part 1

Graphics and Java 2d

Strings

Files,streams and Object Serialization

Recursion

Searching, Sorting and Big O

Generic Collections

Generic Classes and Methods

Custom Generic Data Structures

Applets and Java Web Start

Multimedia: Applets and Applications

Gui, Part 2

Multithreading

Networking

Accessing Databases With Jdbc

Java Server Faces Web Applications

Ajax-Enabled Jsf Web Applications

Web Services

Filters

Exam 10: Object-Oriented Programming: Polymorphism

If the superclass contains only abstract method declarations,the superclass is used for:

For which of the following would polymorphism not provide a clean solution?

Which of the following statements about interfaces is false?

An interface may contain:

Which keyword is used to specify that a class will define the methods of an interface?

Introduction to Computers and Java

Introduction to Java Applications

Introduction to Classes and Objects

Control Statements: Part 1

Control Statements: Part 2

Methods: a Deeper Look

Arrays and Arraylists

Classes and Objects: a Deeper Look

Object Oriented Programming: Inheritance

Exception Handling

Atm Case Study,part 1: Object-Oriented Design With the Uml

Atm Case Study,part 2: Implementing an Object-Oriented Design

Gui Components: Part 1

Graphics and Java 2d

Strings

Files,streams and Object Serialization

Recursion

Searching, Sorting and Big O

Generic Collections

Generic Classes and Methods

Custom Generic Data Structures

Applets and Java Web Start

Multimedia: Applets and Applications

Gui, Part 2

Multithreading

Networking

Accessing Databases With Jdbc

Java Server Faces Web Applications

Ajax-Enabled Jsf Web Applications

Web Services

Filters