Question 1

What is the name of the = operator in Java?

Accepted Answer

A)  inequality 
B)  assignment 
C)  identity 
D)  equality 
A)  inequality 
B)  assignment 
C)  identity 
D)  equality

Question 2

If greeting is a String object, which method call is incorrect?

Accepted Answer

A)  greeting.length() 
B)  greeting.toLowerCase() 
C)  greeting.toUpperCase() 
D)  greeting.println() 
A)  greeting.length() 
B)  greeting.toLowerCase() 
C)  greeting.toUpperCase() 
D)  greeting.println()

Question 3

Input to a method enclosed in parentheses after the method name is known as ______________.

Accepted Answer

A)  implicit parameters 
B)  interfaces 
C)  explicit parameters 
D)  return values 
A)  implicit parameters 
B)  interfaces 
C)  explicit parameters 
D)  return values

Question 4

Based on the following statement, which of the following statements sets the title of the frame: JFrame frame = new JFrame();

Accepted Answer

A)  frame.title = "An Empty Frame"; 
B)  frame.setTitle(JFrame.EMPTY); 
C)  frame.addTitle("An Empty Frame"); 
D)  frame.setTitle("An Empty Frame"); 
A)  frame.title = "An Empty Frame"; 
B)  frame.setTitle(JFrame.EMPTY); 
C)  frame.addTitle("An Empty Frame"); 
D)  frame.setTitle("An Empty Frame");

Question 5

Which of the following is a mutator method for the Rectangle class?

Accepted Answer

A)  getHeight 
B)  translate 
C)  getWidth 
D)  isEmpty 
A)  getHeight 
B)  translate 
C)  getWidth 
D)  isEmpty

Question 6

The output of a method is called its __________ value.

Accepted Answer

A)  implicit 
B)  explicit 
C)  parameter 
D)  return 
A)  implicit 
B)  explicit 
C)  parameter 
D)  return

Question 7

Which of the following declares a variable that will store a count with an integer value?

Accepted Answer

A)  integer count; 
B)  double count; 
C)  String count; 
D)  int count; 
A)  integer count; 
B)  double count; 
C)  String count; 
D)  int count;

Question 8

Which is a valid number literal?

Accepted Answer

A)  1x10^4 
B)  1E4 
C)  3 1/2 
D)  10,000 
A)  1x10^4 
B)  1E4 
C)  3 1/2 
D)  10,000

Question 9

Which package is automatically imported in any Java program?

Accepted Answer

A)  java.system 
B)  java.lang 
C)  java.language 
D)  java.util 
A)  java.system 
B)  java.lang 
C)  java.language 
D)  java.util

Question 10

What is the output of the following code:
Int num1 = 6;
Int num2 = 10;
Num1 = num1 + num2;
Num2 = num1 + num2;
System.out.println(num1 + ", " + num2);

Accepted Answer

A)  6, 10 
B)  16, 16 
C)  16, 22 
D)  16, 26 
A)  6, 10 
B)  16, 16 
C)  16, 22 
D)  16, 26

Question 11

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

Accepted Answer

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

Question 12

What is the term used to specify the remote control for a class, indicating what you can do with the objects that belong to the class?

Accepted Answer

A)  private interface 
B)  public interface 
C)  private implementation 
D)  hidden implementation 
A)  private interface 
B)  public interface 
C)  private implementation 
D)  hidden implementation

Question 13

Which statement declares and stores an integer value in a variable?

Accepted Answer

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

Question 14

What is the purpose of the assignment operator?

Accepted Answer

A)  to check for inequality 
B)  to check for identity 
C)  to check for equality 
D)  to change the value of a variable 
A)  to check for inequality 
B)  to check for identity 
C)  to check for equality 
D)  to change the value of a variable

Question 15

Which of the following method calls illustrates the return value of a method as a parameter?

Accepted Answer

A)  greeting.length(); 
B)  greeting.println("Hello"); 
C)  System.out.println(length.greeting()); 
D)  System.out.println(greeting.length()); 
A)  greeting.length(); 
B)  greeting.println("Hello"); 
C)  System.out.println(length.greeting()); 
D)  System.out.println(greeting.length());

Question 16

What is the declared return type for a method that does not have a return value?

Accepted Answer

A)  String 
B)  There is no declared return type when a method does not return a value. 
C)  void 
D)  A method must return a value. 
A)  String 
B)  There is no declared return type when a method does not return a value. 
C)  void 
D)  A method must return a value.

Exam 2: Using Objects

What is the name of the = operator in Java?

If greeting is a String object, which method call is incorrect?

Input to a method enclosed in parentheses after the method name is known as ______________.

Based on the following statement, which of the following statements sets the title of the frame: JFrame frame = new JFrame();

Which of the following is a mutator method for the Rectangle class?

The output of a method is called its __________ value.

Which of the following declares a variable that will store a count with an integer value?

Which is a valid number literal?

Which package is automatically imported in any Java program?

What is the output of the following code: Int num1 = 6; Int num2 = 10; Num1 = num1 + num2; Num2 = num1 + num2; System.out.println(num1 + ", " + num2);

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

What is the term used to specify the remote control for a class, indicating what you can do with the objects that belong to the class?

Which statement declares and stores an integer value in a variable?

What is the purpose of the assignment operator?

Which of the following method calls illustrates the return value of a method as a parameter?

What is the declared return type for a method that does not have a return value?

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