Question 1

In Java, objects within the same class share common _______.

Accepted Answer

A) behavior 
B) data 
C) instructions 
D) comments 
A) behavior 
B) data 
C) instructions 
D) comments

Question 2

The input to a method is called a(n) _______________.

Accepted Answer

A) overloaded 
B) argument 
C) interface 
D) procedure 
A) overloaded 
B) argument 
C) interface 
D) procedure

Question 3

A method name is ____________________ if a class has more than one method with that name (but different parameter types).

Accepted Answer

A) overridden 
B) overimplemented 
C) overwhelmed 
D) overloaded 
A) overridden 
B) overimplemented 
C) overwhelmed 
D) overloaded

Question 4

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 5

The "building blocks" that Java programmers use to write computer programs are called _______.

Accepted Answer

A) windows 
B) objects 
C) internal data 
D) entities 
A) windows 
B) objects 
C) internal data 
D) entities

Question 6

Which of the following method calls illustrate using the return value of a method as an argument?

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 7

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 8

Which is not a method of the String class?

Accepted Answer

A) length 
B) toUpperCase 
C) toLowerCase 
D) println 
A) length 
B) toUpperCase 
C) toLowerCase 
D) println

Question 9

What is the purpose of a test program?

Accepted Answer

A) The test program confirms that the Java compiler is correct. 
B) The test program verifies that methods have been implemented correctly. 
C) The test program checks the syntax of each object's methods. 
D) The test program enforces that the types between arguments match correctly. 
A) The test program confirms that the Java compiler is correct. 
B) The test program verifies that methods have been implemented correctly. 
C) The test program checks the syntax of each object's methods. 
D) The test program enforces that the types between arguments match correctly.

Question 10

If greeting refers to a String object, which of the following is a syntactically correct Java statement?

Accepted Answer

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

Question 11

Which of the following statements about methods is correct?

Accepted Answer

A) A method is a sequence of instructions that could access the data of an object 
B) A method name is unique across the entire program. 
C) A method can be called on any object in any class. 
D) Methods are stored in variables. 
A) A method is a sequence of instructions that could access the data of an object 
B) A method name is unique across the entire program. 
C) A method can be called on any object in any class. 
D) Methods are stored in variables.

Question 12

What do object variables store?

Accepted Answer

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

Question 13

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 14

What is an object?

Accepted Answer

A) A sequence of instructions. 
B) Any value stored in a variable. 
C) An entity in your program that is manipulated by calling methods. 
D) Any input to a method. 
A) A sequence of instructions. 
B) Any value stored in a variable. 
C) An entity in your program that is manipulated by calling methods. 
D) Any input to a method.

Question 15

What terminology describes a method that returns information about an object and does not change the object's internal data?

Accepted Answer

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

Question 16

In Java, a(n) _________ specifies the kind of values that can be stored in a variable.

Accepted Answer

A) literal 
B) class 
C) operator 
D) type 
A) literal 
B) class 
C) operator 
D) type

Question 17

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 18

Assuming the following Java statement:
int num = 10;
What does the variable num store?

Accepted Answer

A) The memory location where the value 10 is stored. 
B) A reference to the int primitive type. 
C) An object representing the number 10. 
D) The numeric value 10. 
A) The memory location where the value 10 is stored. 
B) A reference to the int primitive type. 
C) An object representing the number 10. 
D) The numeric value 10.

Question 19

Which method could 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 20

Which statement about methods is true?

Accepted Answer

A) A method must return a value 
B) The return value of a method must be stored in a variable 
C) Some methods carry out an action; others return a value 
D) All methods require multiple arguments 
A) A method must return a value 
B) The return value of a method must be stored in a variable 
C) Some methods carry out an action; others return a value 
D) All methods require multiple arguments

Exam 2: Using Objects

In Java, objects within the same class share common _______.

The input to a method is called a(n) _______________.

A method name is ____________________ if a class has more than one method with that name (but different parameter types).

Which package is automatically imported in any Java program?

The "building blocks" that Java programmers use to write computer programs are called _______.

Which of the following method calls illustrate using the return value of a method as an argument?

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

Which is not a method of the String class?

What is the purpose of a test program?

If greeting refers to a String object, which of the following is a syntactically correct Java statement?

Which of the following statements about methods is correct?

What do object variables store?

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

What is an object?

What terminology describes a method that returns information about an object and does not change the object's internal data?

In Java, a(n) _________ specifies the kind of values that can be stored in a variable.

What is the purpose of the assignment operator?

Assuming the following Java statement: int num = 10; What does the variable num store?

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

Which statement about methods is true?

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