Question 1

What will be the value of z as a result of executing the following code? int x = 5, y = 28;
Float z;
Z = (float) (y / x);

Accepted Answer

A)  5.60 
B)  5.6 
C)  3.0 
D)  5.0 
A)  5.60 
B)  5.6 
C)  3.0 
D)  5.0

Question 2

Which of the following is not a rule that must be followed when naming identifiers?

Accepted Answer

A)  The first character must be one of the letters a-z, A-Z, and underscore or a dollar sign. 
B)  Identifiers can contain spaces. 
C)  Uppercase and lowercase characters are distinct. 
D)  After the first character, you may use the letters a-z, A-Z, the underscore, a dollar sign, or digits 0-9. 
A)  The first character must be one of the letters a-z, A-Z, and underscore or a dollar sign. 
B)  Identifiers can contain spaces. 
C)  Uppercase and lowercase characters are distinct. 
D)  After the first character, you may use the letters a-z, A-Z, the underscore, a dollar sign, or digits 0-9.

Question 3

What will be displayed as a result of executing the following code? int x = 5, y = 20;
X += 32;
Y /= 4;
System.out.println("x = " + x + ", y = " + y);

Accepted Answer

A)  x = 32, y = 4 
B)  x = 9, y = 52 
C)  x = 37, y = 5 
D)  x = 160, y = 80 
A)  x = 32, y = 4 
B)  x = 9, y = 52 
C)  x = 37, y = 5 
D)  x = 160, y = 80

Question 4

Both character literals and string literals can be assigned to a char variable.

Accepted Answer

A) True 
 B)False

Question 5

Which Scanner class method reads a String?

Accepted Answer

A)  readString() 
B)  nextString() 
C)  getString() 
D)  nextLine() 
A)  readString() 
B)  nextString() 
C)  getString() 
D)  nextLine()

Question 6

What will be displayed as a result of executing the following code? public class test
{
Public static void main(String[] args)
{
Int value1 = 9;
System.out.println(value1);
Int value2 = 45;
System.out.println(value2);
System.out.println(value3);
Value = 16;
}
}

Accepted Answer

A)  9
45
16 
B)  94516 
C)  9 45 16 
D)  Nothing, this is an error 
A)  9
45
16 
B)  94516 
C)  9 45 16 
D)  Nothing, this is an error

Question 7

Which of the following statements correctly creates a Scanner object for keyboard input?

Accepted Answer

A)  Scanner kbd = new Scanner(System.keyboard); 
B)  Scanner keyboard(System.in); 
C)  Scanner keyboard = new Scanner(System.in); 
D)  Keyboard scanner = new Keyboard(System.in); 
A)  Scanner kbd = new Scanner(System.keyboard); 
B)  Scanner keyboard(System.in); 
C)  Scanner keyboard = new Scanner(System.in); 
D)  Keyboard scanner = new Keyboard(System.in);

Question 8

A Java program will not compile unless it contains the correct line numbers.

Accepted Answer

A) True 
 B)False

Question 9

What will be displayed as a result of executing the following code? int x = 8;
String msg = "I am enjoying java.";
String msg1 = msg.toUpperCase();
String msg2 = msg.toLowerCase();
Char ltr = msg.charAt(x);
Int strSize = msg.length();
System.out.println(msg);
System.out.println(msg1);
System.out.println(msg2);
System.out.println("Character at index x = " +
Ltr);
System.out.println("msg has " + strSize +
" characters.");

Accepted Answer

A)  I am enjoying java.
I AM ENJOYING JAVA.
I am enjoying java.
Character at index x = j
Msg has 20 characters. 
B)  I am enjoying java.
I AM ENJOYING JAVA.
I am enjoying java.
Character at index x = o
Msg has 20 characters. 
C)  I am enjoying java.
I AM ENJOYING JAVA.
I am enjoying java.
Character at index x = o
Msg has 19 characters. 
D)  I am enjoying java.
I AM ENJOYING JAVA.
I am enjoying java.
Character at index x = y
Msg has 19 characters. 
A)  I am enjoying java.
I AM ENJOYING JAVA.
I am enjoying java.
Character at index x = j
Msg has 20 characters. 
B)  I am enjoying java.
I AM ENJOYING JAVA.
I am enjoying java.
Character at index x = o
Msg has 20 characters. 
C)  I am enjoying java.
I AM ENJOYING JAVA.
I am enjoying java.
Character at index x = o
Msg has 19 characters. 
D)  I am enjoying java.
I AM ENJOYING JAVA.
I am enjoying java.
Character at index x = y
Msg has 19 characters.

Question 10

Which of the following cannot be used as identifiers in Java?

Accepted Answer

A)  Variable names 
B)  Class names 
C)  Key words 
D)  All of the above 
E)  None of the above 
A)  Variable names 
B)  Class names 
C)  Key words 
D)  All of the above 
E)  None of the above

Question 11

What is the result of the following expression? 25 - 7 * 3 + 12 / 3

Accepted Answer

A)  6 
B)  8 
C)  10 
D)  12 
A)  6 
B)  8 
C)  10 
D)  12

Question 12

What is the result of the following expression? 25 / 4 + 4 * 10 % 3

Accepted Answer

A)  19 
B)  5.25 
C)  3 
D)  7 
A)  19 
B)  5.25 
C)  3 
D)  7

Question 13

Given the declaration double r;, which of the following statements is invalid?

Accepted Answer

A)  r = 326.75; 
B)  r = 9.4632e15; 
C)  r = 9.4632E15; 
D)  r = 2.9X106; 
A)  r = 326.75; 
B)  r = 9.4632e15; 
C)  r = 9.4632E15; 
D)  r = 2.9X106;

Question 14

If x has been declared an int, which of the following statements is invalid?

Accepted Answer

A)  x = 0; 
B)  x = -58932; 
C)  x = 1,000; 
D)  x = 592; 
A)  x = 0; 
B)  x = -58932; 
C)  x = 1,000; 
D)  x = 592;

Question 15

To display the output on the next line, you can use the println method or use this escape sequence in the print method.

Accepted Answer

A)  
 
B)   
C)  	 
D)  \b 
A)  
 
B)   
C)  	 
D)  \b

Question 16

What will be displayed after the following statements have been executed? int x = 15, y = 20, z = 32;
X += 12;
Y /= 6;
Z -= 14;
System.out.println("x = " + x +
", y = " + y +
", z = " +z);

Accepted Answer

A)  x = 27, y = 3.333, z = 18 
B)  x = 27, y = 2, z = 18 
C)  x = 27, y = 3, z = 18 
D)  x = 37, y = 14, z = 4 
A)  x = 27, y = 3.333, z = 18 
B)  x = 27, y = 2, z = 18 
C)  x = 27, y = 3, z = 18 
D)  x = 37, y = 14, z = 4

Question 17

Which one of the following would contain the translated Java byte code for a program named Demo?

Accepted Answer

A)  Demo.java 
B)  Demo.code 
C)  Demo.class 
D)  Demo.byte 
A)  Demo.java 
B)  Demo.code 
C)  Demo.class 
D)  Demo.byte

Question 18

What will be displayed as a result of executing the following code? int x = 6;
String msg = "I am enjoying this class.";
String msg1 = msg.toUpperCase();
String msg2 = msg.toLowerCase();
Char ltr = msg.charAt(x);
Int strSize = msg.length();
System.out.println(msg);
System.out.println(msg1);
System.out.println(msg2);
System.out.println("Character at index x = " +
Ltr);
System.out.println("msg has " + strSize +
"characters.");

Accepted Answer

A)  I am enjoying this class.
I AM ENJOYING THIS CLASS.
I am enjoying this class.
Character at index x = e
Msg has 24 characters. 
B)  I am enjoying this class.
I AM ENJOYING THIS CLASS.
I am enjoying this class.
Character at index x = e
Msg has 25 characters. 
C)  I am enjoying this class.
I AM ENJOYING THIS CLASS.
I am enjoying this class.
Character at index x = n
Msg has 24 characters. 
D)  I am enjoying this class.
I AM ENJOYING THIS CLASS.
I am enjoying this class.
Character at index x = n
Msg has 25characters. 
A)  I am enjoying this class.
I AM ENJOYING THIS CLASS.
I am enjoying this class.
Character at index x = e
Msg has 24 characters. 
B)  I am enjoying this class.
I AM ENJOYING THIS CLASS.
I am enjoying this class.
Character at index x = e
Msg has 25 characters. 
C)  I am enjoying this class.
I AM ENJOYING THIS CLASS.
I am enjoying this class.
Character at index x = n
Msg has 24 characters. 
D)  I am enjoying this class.
I AM ENJOYING THIS CLASS.
I am enjoying this class.
Character at index x = n
Msg has 25characters.

Question 19

What is the result of the following expression? 17 % 3 * 2 - 12 + 15

Accepted Answer

A)  7 
B)  8 
C)  12 
D)  105 
A)  7 
B)  8 
C)  12 
D)  105

Question 20

A variable's scope is the part of the program that has access to the variable.

Accepted Answer

A) True 
 B)False

What will be the value of z as a result of executing the following code? int x = 5, y = 28; Float z; Z = (float) (y / x);

Which of the following is not a rule that must be followed when naming identifiers?

What will be displayed as a result of executing the following code? int x = 5, y = 20; X += 32; Y /= 4; System.out.println("x = " + x + ", y = " + y);

Both character literals and string literals can be assigned to a char variable.

Which Scanner class method reads a String?

What will be displayed as a result of executing the following code? public class test { Public static void main(String[] args) { Int value1 = 9; System.out.println(value1); Int value2 = 45; System.out.println(value2); System.out.println(value3); Value = 16; } }

Which of the following statements correctly creates a Scanner object for keyboard input?

A Java program will not compile unless it contains the correct line numbers.

Which of the following cannot be used as identifiers in Java?

What is the result of the following expression? 25 - 7 * 3 + 12 / 3

What is the result of the following expression? 25 / 4 + 4 * 10 % 3

Given the declaration double r;, which of the following statements is invalid?

If x has been declared an int, which of the following statements is invalid?

To display the output on the next line, you can use the println method or use this escape sequence in the print method.

What will be displayed after the following statements have been executed? int x = 15, y = 20, z = 32; X += 12; Y /= 6; Z -= 14; System.out.println("x = " + x + ", y = " + y + ", z = " +z);

Which one of the following would contain the translated Java byte code for a program named Demo?

What is the result of the following expression? 17 % 3 * 2 - 12 + 15

A variable's scope is the part of the program that has access to the variable.

Introduction to Computers and Java

Decision Structures

Loops and Files

Methods

A First Look at Classes

Arrays and the Arraylist Class

A Second Look at Classes and Objects

Text Processing and More About Wrapper Classes

Inheritance

Exceptions and Advanced File IO

A First Look at GUI Applications

Advanced GUI Applications

Applets and More

Creating GUI Applications With Javafx and Scene Builder

Recursion

Databases

Filters

Exam 2: Java Fundamentals

What will be the value of z as a result of executing the following code? int x = 5, y = 28; Float z; Z = (float) (y / x);

Which of the following is not a rule that must be followed when naming identifiers?

What will be displayed as a result of executing the following code? int x = 5, y = 20; X += 32; Y /= 4; System.out.println("x = " + x + ", y = " + y);

Both character literals and string literals can be assigned to a char variable.

Which Scanner class method reads a String?

What will be displayed as a result of executing the following code? public class test { Public static void main(String[] args) { Int value1 = 9; System.out.println(value1); Int value2 = 45; System.out.println(value2); System.out.println(value3); Value = 16; } }

Which of the following statements correctly creates a Scanner object for keyboard input?

A Java program will not compile unless it contains the correct line numbers.

Which of the following cannot be used as identifiers in Java?

What is the result of the following expression? 25 - 7 * 3 + 12 / 3

What is the result of the following expression? 25 / 4 + 4 * 10 % 3

Given the declaration double r;, which of the following statements is invalid?

If x has been declared an int, which of the following statements is invalid?

To display the output on the next line, you can use the println method or use this escape sequence in the print method.

What will be displayed after the following statements have been executed? int x = 15, y = 20, z = 32; X += 12; Y /= 6; Z -= 14; System.out.println("x = " + x + ", y = " + y + ", z = " +z);

Which one of the following would contain the translated Java byte code for a program named Demo?

What is the result of the following expression? 17 % 3 * 2 - 12 + 15

A variable's scope is the part of the program that has access to the variable.

Introduction to Computers and Java

Decision Structures

Loops and Files

Methods

A First Look at Classes

Arrays and the Arraylist Class

A Second Look at Classes and Objects

Text Processing and More About Wrapper Classes

Inheritance

Exceptions and Advanced File IO

A First Look at GUI Applications

Advanced GUI Applications

Applets and More

Creating GUI Applications With Javafx and Scene Builder

Recursion

Databases

Filters