Question 1

What is the name of the type that denotes whole numbers?

Accepted Answer

A)  double 
B)  int 
C)  whole 
D)  integer 
A)  double 
B)  int 
C)  whole 
D)  integer B

Question 2

To use a class in another package you need to ________ it.

Accepted Answer

A)  export 
B)  overload 
C)  rewrite 
D)  import 
A)  export 
B)  overload 
C)  rewrite 
D)  import D

Question 3

What is the name of the type that denotes floating-point numbers that can have fractional parts?

Accepted Answer

A)  double 
B)  floatingPoint 
C)  int 
D)  integer 
A)  double 
B)  floatingPoint 
C)  int 
D)  integer A

Question 4

"System.out" is an instance of (example of?) which class?

Accepted Answer

A)  String 
B)  Println 
C)  System 
D)  PrintStream 
A)  String 
B)  Println 
C)  System 
D)  PrintStream

Question 5

Which of the following constructs a Circle of radius 3, assuming the construction parameter is the radius value?

Accepted Answer

A)  Circle(3).new 
B)  new Circle(3) 
C)  new.Circle(3) 
D)  Circle(3) 
A)  Circle(3).new 
B)  new Circle(3) 
C)  new.Circle(3) 
D)  Circle(3)

Question 6

Which of the following values does not have a primitive type?

Accepted Answer

A)  12.50 
B)  "Hello" 
C)  6 
D)  1E4 
A)  12.50 
B)  "Hello" 
C)  6 
D)  1E4

Question 7

Which of the following declares a variable that will store a welcome message?

Accepted Answer

A)  String welcome; 
B)  double welcome; 
C)  Char welcome; 
D)  int welcome; 
A)  String welcome; 
B)  double welcome; 
C)  Char welcome; 
D)  int welcome;

Question 8

Which method would you use to obtain the string "1234567890" from the string "123-456-7890"?

Accepted Answer

A)  isEmpty 
B)  replace 
C)  trim 
D)  length 
A)  isEmpty 
B)  replace 
C)  trim 
D)  length

Question 9

A set of values and the operations that can be carried out with those values are called _______.

Accepted Answer

A)  literals 
B)  numbers 
C)  values 
D)  types 
A)  literals 
B)  numbers 
C)  values 
D)  types

Question 10

Which statement calls a constructor with no construction parameters?

Accepted Answer

A)  Circle c = new Circle(); 
B)  A call to a constructor must have construction parameters. 
C)  Circle c = new Circle; 
D)  Circle c = Circle() 
A)  Circle c = new Circle(); 
B)  A call to a constructor must have construction parameters. 
C)  Circle c = new Circle; 
D)  Circle c = Circle()

Question 11

What do object variables store?

Accepted Answer

A)  objects 
B)  classes 
C)  references 
D)  numbers 
A)  objects 
B)  classes 
C)  references 
D)  numbers

Question 12

A _____________ is a collection of classes with a related purpose.

Accepted Answer

A)  package 
B)  import 
C)  method 
D)  collection 
A)  package 
B)  import 
C)  method 
D)  collection

Question 13

Which of the following is the best choice for a variable identifier that will store a name?

Accepted Answer

A)  name 
B)  Name 
C)  n 
D)  nm 
A)  name 
B)  Name 
C)  n 
D)  nm

Question 14

What is the output of the following code: Circle c1 = new Circle(3);
Circle c2 = c1;
C1)setRadius(4);
System.out.println(c2.getRadius());

Accepted Answer

A)  4 
B)  3 
C)  6 
D)  8 
A)  4 
B)  3 
C)  6 
D)  8

Question 15

What is the name of the type that denotes a string of characters?

Accepted Answer

A)  Characters 
B)  char 
C)  charString 
D)  String 
A)  Characters 
B)  char 
C)  charString 
D)  String

Question 16

Which statement about identifiers is correct?

Accepted Answer

A)  Identifiers are not case sensitive. 
B)  Spaces are permitted inside identifiers. 
C)  Identifiers can use symbols such as ? or %. 
D)  Identifiers can be made up of letters, digits, and the underscore (_) character. 
A)  Identifiers are not case sensitive. 
B)  Spaces are permitted inside identifiers. 
C)  Identifiers can use symbols such as ? or %. 
D)  Identifiers can be made up of letters, digits, and the underscore (_) character.

Question 17

Which of the following statements about methods is correct?

Accepted Answer

A)  A method can have only one explicit parameter. 
B)  The return value of a method can be used as a parameter. 
C)  Every method must have a return value. 
D)  A method can have multiple implicit parameters. 
A)  A method can have only one explicit parameter. 
B)  The return value of a method can be used as a parameter. 
C)  Every method must have a return value. 
D)  A method can have multiple implicit parameters.

Question 18

What terminology describes a method that returns information about its implicit parameter and does not change the parameter's internal data?

Accepted Answer

A)  mutator 
B)  accessor 
C)  void 
D)  public 
A)  mutator 
B)  accessor 
C)  void 
D)  public

Question 19

Which statement stores an integer value in a variable?

Accepted Answer

A)  count = 5; 
B)  String count = 5; 
C)  int count; 
D)  integer count = 5; 
A)  count = 5; 
B)  String count = 5; 
C)  int count; 
D)  integer count = 5;

Question 20

What terminology describes a method that modifies the internal data of its implicit parameter?

Accepted Answer

A)  public 
B)  void 
C)  mutator 
D)  accessor 
A)  public 
B)  void 
C)  mutator 
D)  accessor

Exam 2: Using Objects

What is the name of the type that denotes whole numbers?

To use a class in another package you need to ________ it.

What is the name of the type that denotes floating-point numbers that can have fractional parts?

"System.out" is an instance of (example of?) which class?

Which of the following constructs a Circle of radius 3, assuming the construction parameter is the radius value?

Which of the following values does not have a primitive type?

Which of the following declares a variable that will store a welcome message?

Which method would you use to obtain the string "1234567890" from the string "123-456-7890"?

A set of values and the operations that can be carried out with those values are called _______.

Which statement calls a constructor with no construction parameters?

What do object variables store?

A _____________ is a collection of classes with a related purpose.

Which of the following is the best choice for a variable identifier that will store a name?

What is the output of the following code: Circle c1 = new Circle(3); Circle c2 = c1; C1)setRadius(4); System.out.println(c2.getRadius());

What is the name of the type that denotes a string of characters?

Which statement about identifiers is correct?

Which of the following statements about methods is correct?

What terminology describes a method that returns information about its implicit parameter and does not change the parameter's internal data?

Which statement stores an integer value in a variable?

What terminology describes a method that modifies the internal data of its implicit parameter?

Introduction

Implementing Classes

Fundamental Data Types

Decisions

Loops

Arrays and Array Lists

Designing Classes

Inheritance

Interfaces

Inputoutput and Exception Handling

Object-Oriented Design

Recursion

Sorting and Searching

The Java Collections Framework

Basic Data Structures

Tree Structures

Generic Classes

Graphical User Interfaces

Streams and Binary Inputoutput

Multithreading

Internet Networking

Relational Databases

XML

Web Applications

Filters