Question 1

Based on the following code, which of the following statements sets the frame to a width of 400 and a height of 200:

Accepted Answer

A) frame.size = (FRAME_WIDTH, FRAME_HEIGHT); 
B) frame.addSize(FRAME_WIDTH, FRAME_HEIGHT); 
C) frame.setSize(FRAME_WIDTH, FRAME_HEIGHT); 
D) frame.setSize(FRAME_HEIGHT, FRAME_WIDTH); 
A) frame.size = (FRAME_WIDTH, FRAME_HEIGHT); 
B) frame.addSize(FRAME_WIDTH, FRAME_HEIGHT); 
C) frame.setSize(FRAME_WIDTH, FRAME_HEIGHT); 
D) frame.setSize(FRAME_HEIGHT, FRAME_WIDTH);

Question 2

What is a storage location in the computer's memory called that has a type, name, and contents?

Accepted Answer

A) identifier 
B) literal 
C) label 
D) variable 
A) identifier 
B) literal 
C) label 
D) variable

Question 3

Assume the class Circle has an accessor called getRadius and a mutator called setRadius.What is the output of the following code?

Accepted Answer

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

Question 4

Which of the following statements about test programs is true?

Accepted Answer

A) Test programs verify that methods have been implemented correctly. 
B) A tester class does not contain the main method. 
C) You do not have to display the expected results. 
D) Writing test programs is not an important skill. 
A) Test programs verify that methods have been implemented correctly. 
B) A tester class does not contain the main method. 
C) You do not have to display the expected results. 
D) Writing test programs is not an important skill.

Question 5

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 6

Which of the following terms denotes the memory location of an object?

Accepted Answer

A) implicit parameter 
B) mutator method 
C) encapsulation 
D) object reference 
A) implicit parameter 
B) mutator method 
C) encapsulation 
D) object reference

Question 7

Which of the following code fragments will cause an error?

Accepted Answer

A)  String greeting =" Hello, Dave !"; 
B)  String greeting = "Hello, World!"; 
int n= greeting.length(); 
C)  Int luckyNumber;
System. out. println(luckyNumber); 
D)  Printstream printer = System.out; 
A)  String greeting =" Hello, Dave !"; 
B)  String greeting = "Hello, World!"; 
int n= greeting.length(); 
C)  Int luckyNumber;
System. out. println(luckyNumber); 
D)  Printstream printer = System.out;

Question 8

What is the output of the following code:

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 9

What is the output of the following code:

Accepted Answer

A) 6, 10 
B) 10, 6 
C) 6, 6 
D) 10, 10 
A) 6, 10 
B) 10, 6 
C) 6, 6 
D) 10, 10

Question 10

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

Question 11

The camel case naming convention uses _________ at intervals in the middle of the variable name.

Accepted Answer

A) uppercase letters 
B) digits 
C) dollar signs 
D) the underscore character 
A) uppercase letters 
B) digits 
C) dollar signs 
D) the underscore character

Question 12

Which term describes a method of an object that modifies that object's internal data?

Accepted Answer

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

Question 13

Complete this code fragment to ensure that the frame is shown:
JFrame frame = new JFrame();

Accepted Answer

A) frame.setVisible(true); 
B) frame.visible = true; 
C) JFrame.setVisible(); 
D) frame.setVisible(); 
A) frame.setVisible(true); 
B) frame.visible = true; 
C) JFrame.setVisible(); 
D) frame.setVisible();

Question 14

What is the term used to specify the collection of things you can do with objects that belong to a 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 15

By convention among Java programmers, class names begin with a(n) _____________.

Accepted Answer

A) lowercase letter 
B) dollar sign 
C) digit 
D) uppercase letter 
A) lowercase letter 
B) dollar sign 
C) digit 
D) uppercase letter

Question 16

Which term is used to describe the name of a variable, method, or class?

Accepted Answer

A) type 
B) literal 
C) identifier 
D) label 
A) type 
B) literal 
C) identifier 
D) label

Question 17

Which of the following statements about objects is correct?

Accepted Answer

A) An object defines the methods for a class. 
B) Every object belongs to a class. 
C) An object is a sequence of instructions. 
D) All entities, even numbers, are objects. 
A) An object defines the methods for a class. 
B) Every object belongs to a class. 
C) An object is a sequence of instructions. 
D) All entities, even numbers, are objects.

Question 18

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 19

By convention among Java programmers, variables begin with a(n) _____________.

Accepted Answer

A) uppercase letter 
B) digit 
C) lowercase letter 
D) dollar sign 
A) uppercase letter 
B) digit 
C) lowercase letter 
D) dollar sign

Question 20

You can invoke the println and print methods on which object?

Accepted Answer

A) the HelloWorld object 
B) the String class 
C) any PrintStream object 
D) any object in Java 
A) the HelloWorld object 
B) the String class 
C) any PrintStream object 
D) any object in Java

Exam 2: Using Objects

Based on the following code, which of the following statements sets the frame to a width of 400 and a height of 200:

What is a storage location in the computer's memory called that has a type, name, and contents?

Assume the class Circle has an accessor called getRadius and a mutator called setRadius.What is the output of the following code?

Which of the following statements about test programs is true?

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

Which of the following terms denotes the memory location of an object?

Which of the following code fragments will cause an error?

What is the output of the following code:

What is the output of the following code:

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

The camel case naming convention uses _________ at intervals in the middle of the variable name.

Which term describes a method of an object that modifies that object's internal data?

Complete this code fragment to ensure that the frame is shown: JFrame frame = new JFrame();

What is the term used to specify the collection of things you can do with objects that belong to a class?

By convention among Java programmers, class names begin with a(n) _____________.

Which term is used to describe the name of a variable, method, or class?

Which of the following statements about objects is correct?

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

By convention among Java programmers, variables begin with a(n) _____________.

You can invoke the println and print methods on which object?

Introduction

Implementing Classes

Fundamental Data Types

Decisions

Loops

Arrays and Array Lists

Designing Classes

Inheritance

Interfaces

Input/Output and Exception Handling

Object-Oriented Design

Recursion

Sorting and Searching

The Java Collections Framework

Basic Data Structures

Tree Structures

Generic Classes

Stream Processing

Graphical User Interfaces

Advanced Input/Output

Multithreading

Internet Networking

Relational Databases

XML

Filters