Question 1

Which of the following escape sequences represents a carriage return?

Accepted Answer

A)  
. 
B)  . 
C)  \cr. 
D)  \c. 
A)  
. 
B)  . 
C)  \cr. 
D)  \c. B

Question 2

Which of the following statements does not alter the value stored in a memory location?

Accepted Answer

A)  int a; 
B)  number = 12; 
C)  y = y + 2; 
D)  width = Integer.parseInt(input); 
A)  int a; 
B)  number = 12; 
C)  y = y + 2; 
D)  width = Integer.parseInt(input); A

Question 3

Which of the following cannot cause a syntax error to be reported by the Java compiler?

Accepted Answer

A)  Mismatched {} 
B)  Missing */ in a comment that begins with /* 
C)  Missing ; 
D)  An extra blank line. 
A)  Mismatched {} 
B)  Missing */ in a comment that begins with /* 
C)  Missing ; 
D)  An extra blank line. D

Question 4

method printf requires multiple arguments, the arguments are separated with ________.

Accepted Answer

A)  colons (:). 
B)  semicolons (;). 
C)  commas (,). 
D)  periods (.). 
A)  colons (:). 
B)  semicolons (;). 
C)  commas (,). 
D)  periods (.).

Question 5

Programs remember numbers and other data in the computer's memory and access that data through program elements called

Accepted Answer

A)  comments. 
B)  messages. 
C)  integers. 
D)  variables. 
A)  comments. 
B)  messages. 
C)  integers. 
D)  variables.

Question 6

Which of the following statements is true?

Accepted Answer

A)  System.out.print("Enter your age: "); prompts the user to take action. 
B)  Class names typically begin with a capital letter. 
C)  Package java.lang is imported in every Java program. 
D)  All of the above are true. 
A)  System.out.print("Enter your age: "); prompts the user to take action. 
B)  Class names typically begin with a capital letter. 
C)  Package java.lang is imported in every Java program. 
D)  All of the above are true.

Question 7

Which of the following is not an arithmetic operator?

Accepted Answer

A)  + 
B)  - 
C)  . 
D)  % 
A)  + 
B)  - 
C)  . 
D)  %

Question 8

Optional parentheses in expressions are said to be

Accepted Answer

A)  redundant. 
B)  binary operators. 
C)  implied. 
D)  declared. 
A)  redundant. 
B)  binary operators. 
C)  implied. 
D)  declared.

Question 9

Which of the following statements will print a single line containing "hello there"?

Accepted Answer

A)  System.out.println("hello"); System.out.println(" there"); 
B)  System.out.println("hello" , " there"); 
C)  System.out.println("hello"); System.out.print(" there"); 
D)  System.out.print("hello"); System.out.println(" there"); 
A)  System.out.println("hello"); System.out.println(" there"); 
B)  System.out.println("hello" , " there"); 
C)  System.out.println("hello"); System.out.print(" there"); 
D)  System.out.print("hello"); System.out.println(" there");

Question 10

Which of the following is the escape character?

Accepted Answer

A)  * 
B)  \ 
C)  
 
D)  " 
A)  * 
B)  \ 
C)  
 
D)  "

Question 11

is the value of result after the following Java statements execute (assume all variables are of type int)? a = 4;
B = 12;
C = 37;
D = 51;
Result = d % a * c + a % b + a;

Accepted Answer

A)  119 
B)  51 
C)  127 
D)  59 
A)  119 
B)  51 
C)  127 
D)  59

Question 12

________ enables a program to read data from the user.

Accepted Answer

A)  printf. 
B)  import declaration. 
C)  Scanner. 
D)  main. 
A)  printf. 
B)  import declaration. 
C)  Scanner. 
D)  main.

Question 13

Which of the following is not a valid Java identifier?

Accepted Answer

A)  my Value 
B)  $_AAA1 
C)  width 
D)  m_x 
A)  my Value 
B)  $_AAA1 
C)  width 
D)  m_x

Question 14

Given the Java statement int number1 = input.nextInt();
In which input is a Scanner, which of the following occurs if the user does not enter a valid int value?

Accepted Answer

A)  A compilation error occurs. 
B)  The program continues executing and assigns the value 0 to number1. 
C)  A runtime logic error occurs. 
D)  None of the above. 
A)  A compilation error occurs. 
B)  The program continues executing and assigns the value 0 to number1. 
C)  A runtime logic error occurs. 
D)  None of the above.

Question 15

Which of the following statement displays Hello World?

Accepted Answer

A)  System.out.printf("%2s", "Hello " "World"); 
B)  System.out.printf("%s %s", "Hello", "World"); 
C)  System.out.printf("%s%s", "Hello, World"); 
D)  System.out.printf("s% s%", "Hello", "World"); 
A)  System.out.printf("%2s", "Hello " "World"); 
B)  System.out.printf("%s %s", "Hello", "World"); 
C)  System.out.printf("%s%s", "Hello, World"); 
D)  System.out.printf("s% s%", "Hello", "World");

Question 16

Portions of statements that contain calculations are called

Accepted Answer

A)  variables. 
B)  constants. 
C)  expressions. 
D)  None of the above. 
A)  variables. 
B)  constants. 
C)  expressions. 
D)  None of the above.

Question 17

import declarations must be placed

Accepted Answer

A)  inside the class declaration's body. 
B)  before the class declaration. 
C)  after the class declaration. 
D)  all of the above will work. 
A)  inside the class declaration's body. 
B)  before the class declaration. 
C)  after the class declaration. 
D)  all of the above will work.

Question 18

Which command executes the Java class file Welcome.class?

Accepted Answer

A)  java welcome 
B)  java Welcome.class 
C)  java Welcome 
D)  run Welcome.class 
A)  java welcome 
B)  java Welcome.class 
C)  java Welcome 
D)  run Welcome.class

Question 19

Which of the following does not contain a syntax error?

Accepted Answer

A)  System.out.println('Hello world!'): 
B)  System.out.println("Hello world!"); 
C)  System.out.println("Hello world!");. 
D)  System.out.println(Hello world!);. 
A)  System.out.println('Hello world!'): 
B)  System.out.println("Hello world!"); 
C)  System.out.println("Hello world!");. 
D)  System.out.println(Hello world!);.

Question 20

will be output after the following Java statements have been executed (assume all variables are of type int)? a = 4;
B = 12;
C = 37;
D = 51;
If (a  b) {
System.out.println("a > b");
}
If (d <= c) {
System.out.println("d <= c");
}
If (c != d) {
System.out.println("c != d");
}

Accepted Answer

A)  a  b c != d 
D)  a < b c < d
A != b 
A)  a  b c != d 
D)  a < b c < d
A != b

Exam 2: Introduction to Java Applications; Inputoutput and Operators

Which of the following escape sequences represents a carriage return?

Which of the following statements does not alter the value stored in a memory location?

Which of the following cannot cause a syntax error to be reported by the Java compiler?

method printf requires multiple arguments, the arguments are separated with ________.

Programs remember numbers and other data in the computer's memory and access that data through program elements called

Which of the following statements is true?

Which of the following is not an arithmetic operator?

Optional parentheses in expressions are said to be

Which of the following statements will print a single line containing "hello there"?

Which of the following is the escape character?

is the value of result after the following Java statements execute (assume all variables are of type int)? a = 4; B = 12; C = 37; D = 51; Result = d % a * c + a % b + a;

________ enables a program to read data from the user.

Which of the following is not a valid Java identifier?

Given the Java statement int number1 = input.nextInt(); In which input is a Scanner, which of the following occurs if the user does not enter a valid int value?

Which of the following statement displays Hello World?

Portions of statements that contain calculations are called

import declarations must be placed

Which command executes the Java class file Welcome.class?

Which of the following does not contain a syntax error?

Introduction to Computers, the Internet and Java

Introduction to Classes, Objects, Methods and Strings

Control Statements: Assignment, and Operators

Control Statements: Logical Operators

Methods: a Deeper Look

Arrays and Arraylists

Classes and Objects: a Deeper Look

Object-Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism and Interfaces

Exception Handling: a Deeper Look

Javafx Graphical User Interfaces

Javafx Gui

Strings, Characters and Regular Expressions

Files, Inputoutput Streams, Nio and Xml Serialization

Generic Collections

Lambdas and Streams

Recursion

Searching, Sorting and Big O

Generic Classes and Methods: a Deeper Look

Custom Generic Data Structures

Concurrency

Accessing Databases With Jdbc

Swing Gui Components

Graphics and Java 2d

Networking

Java Persistence Api Jpa

Javaserver Faces Web Apps

Javaserver Faces Web Apps

Swing Gui Components

Filters