Question 1

What is the value of z after the following code is executed? 
 int x = 5, y = 28;
Float z;
Z = (float)  (y / x) ;

Accepted Answer

A)   5.6
B)   3.0
C)   5.0
D)   5.60 E) None of the above
F) B) and D)

Question 2

What is the value of z after the following statements have been executed? 
 int x = 4, y = 33;
Double z;
Z = (double)  (y / x) ;

Accepted Answer

A)   8.25
B)   4
C)   0
D)   8.0E) A) and C)
F) None of the above

Question 3

To print "Hello, world" on the monitor, which of the following Java statements should be used?

Accepted Answer

A)   System.out.println("Hello, world") ;
B)   System Print = "Hello, world";
C)   SystemOutPrintln('Hello, world') ;
D)   system.out.println(Hello, world) ;E) B) and C)
F) All of the above

Question 4

If you use a  flag  in a format specifier, you must write the flag before the field width and the precision.

Accepted Answer

A) True 
 B)False

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

The boolean data type may contain which of the following range of values?

Accepted Answer

A)    -128 to + 127
B)   true or false
C)   -2,147,483,648 to +2,147,483,647
D)   -32,768 to +32,767 E) All of the above
F) A) and D)

Question 7

Programming style includes techniques for consistently putting spaces and indentation in a program to help create visual cues.

Accepted Answer

A) True 
 B)False

Question 8

Variables are classified according to their

Accepted Answer

A)   names
B)   values
C)   locations
D)   data typesE) All of the above
F) A) and D)

Question 9

Which of the following is a named storage location in the computer's memory?

Accepted Answer

A)   a literal
B)   an operator
C)   a constant
D)   a variableE) A) and B)
F) A) and C)

Question 10

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

Accepted Answer

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

Question 11

What would be displayed as a result of executing the following code? 
 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 = 37, y = -14, z = 4
D)   x = 27, y = 3, z = 18 E) B) and D)
F) C) and D)

Question 12

Which of the following is a value that is written into the code of a program?

Accepted Answer

A)   a literal
B)   an assignment statement
C)   an operator
D)   a variableE) None of the above
F) All of the above

Question 13

A message dialog is a quick and simple way to ask the user to enter data.

Accepted Answer

A) True 
 B)False

Question 14

Which statement tells the compiler where to find the JOptionPane class and makes it available to your program?

Accepted Answer

A)    import javax.swing.JOptionPane;
B)   import Java.Swing.JOptionPane;
C)   import JOptionPane;
D)   import javax.JOptionPane; E) A) and B)
F) None of the above

Question 15

Variables of the  boolean  data type are useful for

Accepted Answer

A)   evaluating conditions that are either true or false
B)   working with small integers
C)   working with very large integers
D)   evaluating scientific notationE) All of the above
F) A) and B)

Question 16

If you want to use the  System.out.printf  method to print a string argument , use the __________ format specifier.

Accepted Answer

A)   % d 
B)   %b 
C)   %f
D)   % s E) A) and B)
F) A) and C)

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

A(n)  __________ is a dialog box that prompts the user for input.

Accepted Answer

A)   input box
B)   user prompt
C)   adaptive dialog
D)   input dialogE) B) and D)
F) All of the above

Question 19

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 = new Scanner(System.in) ;
C)   Scanner keyboard(System.in) ;
D)   Keyboard scanner = new Keyboard(System.in) ; E) A) and B)
F) All of the above

Question 20

Which of the following statements is invalid?

Accepted Answer

A)    double r = 9.4632E15;
B)   double r = 9.4632e15;
C)   double r = 2.9X106;
D)   double r = 326.75; E) None of the above
F) A) and D)

Exam 2: Java Fundamentals

A message dialog is a quick and simple way to ask the user to enter data.

Correct AnswerverifiedShow Answer

Variables are classified according to their

Correct AnswerverifiedShow Answer

What would be displayed as a result of executing the following code? int x = 15, y = 20, z = 32; X += 12; Y /= 6; Z -= 14; System.out.println("x = " + x + ", y = " + y + ", z = " + z) ;

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

To print "Hello, world" on the monitor, which of the following Java statements should be used?

Correct AnswerverifiedShow Answer

Variables of the boolean data type are useful for

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is a value that is written into the code of a program?

Correct AnswerverifiedShow Answer

Which of the following is a named storage location in the computer's memory?

Correct AnswerverifiedShow Answer

Which of the following statements is invalid?

Correct AnswerverifiedShow Answer

Which statement tells the compiler where to find the JOptionPane class and makes it available to your program?

Correct AnswerverifiedShow Answer

Programming style includes techniques for consistently putting spaces and indentation in a program to help create visual cues.

Correct AnswerverifiedShow Answer

What is the value of z after the following statements have been executed? int x = 4, y = 33; Double z; Z = (double) (y / x) ;

Correct AnswerverifiedShow Answer

The boolean data type may contain which of the following range of values?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A(n) __________ is a dialog box that prompts the user for input.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

If you want to use the System.out.printf method to print a string argument , use the __________ format specifier.

Correct AnswerverifiedShow Answer

What is the value of z after the following code is executed? int x = 5, y = 28; Float z; Z = (float) (y / x) ;

Correct AnswerverifiedShow Answer

If you use a flag in a format specifier, you must write the flag before the field width and the precision.

Correct AnswerverifiedShow Answer

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