Question 1

Shadowing is the term used to describe where the field name is hidden by the name of a local or parameter variable.

Accepted Answer

A) True 
 B)False

Question 2

One or more objects may be created from a(n) __________.

Accepted Answer

A)  field 
B)  method 
C)  instance 
D)  class 
A)  field 
B)  method 
C)  instance 
D)  class

Question 3

When an object is passed as an argument to a method, what is passed into the method's parameter variable?

Accepted Answer

A)  the class name 
B)  the object's memory address 
C)  the values for each field 
D)  the method names 
A)  the class name 
B)  the object's memory address 
C)  the values for each field 
D)  the method names

Question 4

Data hiding (which means that critical data stored inside the object is protected from code outside the object) is accomplished in Java by __________.

Accepted Answer

A)  using the public access specifier on the class methods 
B)  using the private access specifier on the class methods 
C)  using the private access specifier on the class fields 
D)  using the private access specifier on the class definition 
A)  using the public access specifier on the class methods 
B)  using the private access specifier on the class methods 
C)  using the private access specifier on the class fields 
D)  using the private access specifier on the class definition

Question 5

Which of the following is not involved in identifying the classes to be used when developing an object-oriented application?

Accepted Answer

A)  a description of the problem domain 
B)  the code 
C)  a refined list of nouns that include only those relevant to the problem 
D)  all the nouns are identified 
A)  a description of the problem domain 
B)  the code 
C)  a refined list of nouns that include only those relevant to the problem 
D)  all the nouns are identified

Question 6

The java.lang package is automatically imported into all Java programs.

Accepted Answer

A) True 
 B)False

Question 7

A reference variable stores a(n) __________.

Accepted Answer

A)  binary encoded decimal 
B)  memory address 
C)  object 
D)  string 
A)  binary encoded decimal 
B)  memory address 
C)  object 
D)  string

Question 8

A constructor is a method that is automatically called when an object is created.

Accepted Answer

A) True 
 B)False

Question 9

Class objects normally have __________ that perform useful operations on their data, but primitive variables do not.

Accepted Answer

A)  fields 
B)  relationships 
C)  methods 
D)  instances 
A)  fields 
B)  relationships 
C)  methods 
D)  instances

Question 10

Which symbol indicates that a member is private a UML diagram?

Accepted Answer

A)  - 
B)  * 
C)  # 
D)  + 
A)  - 
B)  * 
C)  # 
D)  +

Question 11

The term "default constructor" is applied to the first constructor written by the author of the class.

Accepted Answer

A) True 
 B)False

Question 12

The scope of a private instance field is __________.

Accepted Answer

A)  the instance methods of the same class 
B)  inside the class but not inside any method in that class 
C)  inside the parentheses of a method header 
D)  the method in which it is defined 
A)  the instance methods of the same class 
B)  inside the class but not inside any method in that class 
C)  inside the parentheses of a method header 
D)  the method in which it is defined

Question 13

For the following code, which statement is not true? 
public class Circle
{
Private double radius;
Public double x;
Private double y;
}

Accepted Answer

A)  The y field is available to code written outside the Circle class. 
B)  The radius field is not available to code written outside the Circle class. 
C)  The radius, x, and y fields are members of the Circle class. 
D)  The x field is available to code that is written outside the Circle class. 
A)  The y field is available to code written outside the Circle class. 
B)  The radius field is not available to code written outside the Circle class. 
C)  The radius, x, and y fields are members of the Circle class. 
D)  The x field is available to code that is written outside the Circle class.

Question 14

A constructor __________.

Accepted Answer

A)  always accepts two arguments 
B)  has the return type of void 
C)  has the same name as the class 
D)  always has a private access specifier 
A)  always accepts two arguments 
B)  has the return type of void 
C)  has the same name as the class 
D)  always has a private access specifier

Question 15

Given the following code, what will be the value of finalAmount when it is displayed?
public class Order
{
Private int orderNum;
Private double orderAmount;
Private double orderDiscount;
Public Order(int orderNumber, double orderAmt,
Double orderDisc)
{
OrderNum = orderNumber;
OrderAmount = orderAmt;
OrderDiscount = orderDisc;
}
Public double finalOrderTotal()
{
Return orderAmount - orderAmount * orderDiscount;
}
}
Public class CustomerOrder
{
Public static void main(String[ ] args)
{
Order order;
Int orderNumber = 1234;
Double orderAmt = 580.00;
Double orderDisc = .1;
Order = new Order(orderNumber, orderAmt, orderDisc);
Double finalAmount = order.finalOrderTotal();
System.out.printf("Final order amount = $%,.2f
",
FinalAmount);
}
}

Accepted Answer

A)  528.00 
B)  580.00 
C)  522.00 
D)  There is no value because the object, order, has not been created. 
A)  528.00 
B)  580.00 
C)  522.00 
D)  There is no value because the object, order, has not been created.

Question 16

Select all that apply. Which of the following are classes from the Java API?

Accepted Answer

A)  Scanner 
B)  Random 
C)  Package 
D)  PrintWriter 
A)  Scanner 
B)  Random 
C)  Package 
D)  PrintWriter

Question 17

A class is not an object. It is a description of an object.

Accepted Answer

A) True 
 B)False

Question 18

It is common practice in object-oriented programming to make all of a class's __________.

Accepted Answer

A)  fields private 
B)  methods private 
C)  fields public 
D)  fields and methods public 
A)  fields private 
B)  methods private 
C)  fields public 
D)  fields and methods public

Question 19

You should not define a class that is dependent on the values of other class fields __________.

Accepted Answer

A)  in order to keep it current 
B)  because it is redundant 
C)  in order to avoid having stale data 
D)  because it should be defined in another class 
A)  in order to keep it current 
B)  because it is redundant 
C)  in order to avoid having stale data 
D)  because it should be defined in another class

Question 20

__________ refers to combining data and code into a single object.

Accepted Answer

A)  Data hiding 
B)  Abstraction 
C)  The constructor 
D)  Encapsulation 
A)  Data hiding 
B)  Abstraction 
C)  The constructor 
D)  Encapsulation

Shadowing is the term used to describe where the field name is hidden by the name of a local or parameter variable.

One or more objects may be created from a(n) __________.

When an object is passed as an argument to a method, what is passed into the method's parameter variable?

Data hiding (which means that critical data stored inside the object is protected from code outside the object) is accomplished in Java by __________.

Which of the following is not involved in identifying the classes to be used when developing an object-oriented application?

The java.lang package is automatically imported into all Java programs.

A reference variable stores a(n) __________.

A constructor is a method that is automatically called when an object is created.

Class objects normally have __________ that perform useful operations on their data, but primitive variables do not.

Which symbol indicates that a member is private a UML diagram?

The term "default constructor" is applied to the first constructor written by the author of the class.

The scope of a private instance field is __________.

For the following code, which statement is not true? public class Circle { Private double radius; Public double x; Private double y; }

A constructor __________.

Select all that apply. Which of the following are classes from the Java API?

A class is not an object. It is a description of an object.

It is common practice in object-oriented programming to make all of a class's __________.

You should not define a class that is dependent on the values of other class fields __________.

__________ refers to combining data and code into a single object.

Introduction to Computers and Java

Java Fundamentals

Decision Structures

Loops and Files

Methods

Arrays and the Arraylist Class

A Second Look at Classes and Objects

Text Processing and More About Wrapper Classes

Inheritance

Exceptions and Advanced File Io

Java-Fx: Gui Programming and Basic Controls

Java-Fx: Advanced Controls

Java-Fx: Graphics, Effects, and Media

Recursion

Databases

Filters

Exam 6: A First Look at Classes

Shadowing is the term used to describe where the field name is hidden by the name of a local or parameter variable.

One or more objects may be created from a(n) __________.

When an object is passed as an argument to a method, what is passed into the method's parameter variable?

Data hiding (which means that critical data stored inside the object is protected from code outside the object) is accomplished in Java by __________.

Which of the following is not involved in identifying the classes to be used when developing an object-oriented application?

The java.lang package is automatically imported into all Java programs.

A reference variable stores a(n) __________.

A constructor is a method that is automatically called when an object is created.

Class objects normally have __________ that perform useful operations on their data, but primitive variables do not.

Which symbol indicates that a member is private a UML diagram?

The term "default constructor" is applied to the first constructor written by the author of the class.

The scope of a private instance field is __________.

For the following code, which statement is not true? public class Circle { Private double radius; Public double x; Private double y; }

A constructor __________.

Select all that apply. Which of the following are classes from the Java API?

A class is not an object. It is a description of an object.

It is common practice in object-oriented programming to make all of a class's __________.

You should not define a class that is dependent on the values of other class fields __________.

__________ refers to combining data and code into a single object.

Introduction to Computers and Java

Java Fundamentals

Decision Structures

Loops and Files

Methods

Arrays and the Arraylist Class

A Second Look at Classes and Objects

Text Processing and More About Wrapper Classes

Inheritance

Exceptions and Advanced File Io

Java-Fx: Gui Programming and Basic Controls

Java-Fx: Advanced Controls

Java-Fx: Graphics, Effects, and Media

Recursion

Databases

Filters