Question 1

Which of the following is not a compilation error?

Accepted Answer

A) Neglecting to initialize a local variable in a method before it is used. 
B) Placing a semicolon at the end of the first line of an if statement. 
C) Omitting the left and right parenthesis for the condition of an if statement. 
D) All are compilation errors. 
A) Neglecting to initialize a local variable in a method before it is used. 
B) Placing a semicolon at the end of the first line of an if statement. 
C) Omitting the left and right parenthesis for the condition of an if statement. 
D) All are compilation errors. B

Question 2

Each of the following is a relational or equality operator except:

Accepted Answer

A)  
A)  B

Question 3

Which is the output of the following statements? System.out.print( "Hello ");
System.out.println( "World" );

Accepted Answer

A) Hello World 
B) HelloWorld 
C) Hello World. 
D) World Hello 
A) Hello World 
B) HelloWorld 
C) Hello World. 
D) World Hello A

Question 4

Which of the following is not a Java primitive type?

Accepted Answer

A) char 
B) byte 
C) real 
D) double 
A) char 
B) byte 
C) real 
D) double

Question 5

Which of the following is not an arithmetic operator?

Accepted Answer

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

Question 6

Which command compiles the Java source code file Welcome.java?

Accepted Answer

A) cd Welcome.java 
B) javac Welcome.java 
C) java Welcome.java 
D) compile Welcome.java 
A) cd Welcome.java 
B) javac Welcome.java 
C) java Welcome.java 
D) compile Welcome.java

Question 7

What is the value of result after the following Java statements execute? int a,b,c,d,result;
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 8

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.

Question 9

Which of the following escape sequences represents a carriage return?

Accepted Answer

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

Question 10

What will be output after the following Java statements have been executed? int a,b,c,d;
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

Question 11

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 12

Which of the following is a variable declaration statement?

Accepted Answer

A) int total; 
B) import java.util.Scanner; 
C) public static void main( String args[] ) 
D) // first string entered by user 
A) int total; 
B) import java.util.Scanner; 
C) public static void main( String args[] ) 
D) // first string entered by user

Question 13

When 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 14

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 15

The format specifier ________ is a placeholder for an int value?

Accepted Answer

A) %a 
B) %d 
C) %int 
D) %s 
A) %a 
B) %d 
C) %int 
D) %s

Question 16

Which of the following statements does not alter 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);

Question 17

Which of the following is the escape character?

Accepted Answer

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

Question 18

Which command executes the Java class file Welcome.class?

Accepted Answer

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

Question 19

Which of the following statements would display the phase Java is fun?

Accepted Answer

A) System.out.println( "hellois fun\rJava " ); 
B) System.out.println( 'Java is fun' ); 
C) System.out.println( "\"Java is fun\"" ); 
D) System.out.println( Java is fun ); 
A) System.out.println( "hellois fun\rJava " ); 
B) System.out.println( 'Java is fun' ); 
C) System.out.println( "\"Java is fun\"" ); 
D) System.out.println( Java is fun );

Question 20

All 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.

Exam 2: Introduction to Java Applications

Which of the following is not a compilation error?

Each of the following is a relational or equality operator except:

Which is the output of the following statements? System.out.print( "Hello "); System.out.println( "World" );

Which of the following is not a Java primitive type?

Which of the following is not an arithmetic operator?

Which command compiles the Java source code file Welcome.java?

What is the value of result after the following Java statements execute? int a,b,c,d,result; A = 4; B = 12; C = 37; D = 51; Result = d % a * c + a % b + a;

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

Which of the following escape sequences represents a carriage return?

What will be output after the following Java statements have been executed? int a,b,c,d; A = 4; B = 12; C = 37; D = 51; If ( a < b ) System.out.println( "a < b" ); If ( a > b ) System.out.println( "a > b" ); If ( d <= c ) System.out.println( "d <= c" ); If ( c != d ) System.out.println( "c != d" );

Which of the following statement displays Hello World?

Which of the following is a variable declaration statement?

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

Which of the following does not contain a syntax error?

The format specifier ________ is a placeholder for an int value?

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

Which of the following is the escape character?

Which command executes the Java class file Welcome.class?

Which of the following statements would display the phase Java is fun?

All import declarations must be placed

Introduction to Computers and Java

Introduction to Classes and Objects

Control Statements: Part 1

Control Statements: Part 2

Methods: a Deeper Look

Arrays and Arraylists

Classes and Objects: a Deeper Look

Object Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism

Exception Handling

Atm Case Study,part 1: Object-Oriented Design With the Uml

Atm Case Study,part 2: Implementing an Object-Oriented Design

Gui Components: Part 1

Graphics and Java 2d

Strings

Files,streams and Object Serialization

Recursion

Searching, Sorting and Big O

Generic Collections

Generic Classes and Methods

Custom Generic Data Structures

Applets and Java Web Start

Multimedia: Applets and Applications

Gui, Part 2

Multithreading

Networking

Accessing Databases With Jdbc

Java Server Faces Web Applications

Ajax-Enabled Jsf Web Applications

Web Services

Filters