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Quiz Discussion

Modulus operator, %, can be applied to which of these?

Course Name: Java

  • 1]

    Integers
  • 2]

    Floating – point numbers
  • 3]

    Both Integers and floating – point numbers
  • 4]

    None of the mentioned
Solution
No Solution Present Yet

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#Quiz
1
Discuss

Which of these lines of Java code will give better performance?

   1. a | 4 + c >> b & 7; 
   2. (a | ((( 4 * c ) >> b ) & 7 ))
  • 1]

    1 will give better performance as it has no parentheses
  • 2]

    2 will give better performance as it has parentheses
  • 3]

    Both 1 & 2 will give equal performance
  • 4]

    Dependent on the computer system
Solution
10
Discuss

Can 8 byte long data type be automatically type cast to 4 byte float data type?

  • 1]

    true
  • 2]

    false
Solution
2
Discuss

What will be the output of the following Java code?

    class bool_operator 
    {
        public static void main(String args[]) 
        {    
             boolean a = true;
             boolean b = !true;
             boolean c = a | b;
 	     boolean d = a & b;
             boolean e = d ? b : c;
             System.out.println(d + " " + e);
        } 
    }

 

  • 1]

    false false
  • 2]

    true ture
  • 3]

    true false
  • 4]

    false true
Solution
3
Discuss

What will be the output of the following Java program?

    class bitwise_operator 
    {
        public static void main(String args[])
        {
            int var1 = 42;
            int var2 = ~var1;
            System.out.print(var1 + " " + var2);     	
        } 
    }

 

  • 1]

    42 42
  • 2]

    43 43
  • 3]

    42 -43
  • 4]

    42 43
Solution
4
Discuss

What will be the output of the following Java code?

    class operators 
    {
        public static void main(String args[])
        {
            int var1 = 5; 
            int var2 = 6;
            int var3;
            var3 = ++ var2 * var1 / var2 + var2;
            System.out.print(var3);
        } 
    }

 

  • 1]

    10
  • 2]

    11
  • 3]

    12
  • 4]

    56
Solution
5
Discuss

What will be the output of the following Java program?

    class leftshift_operator 
    {
        public static void main(String args[]) 
        {        
             byte x = 64;
             int i;
             byte y; 
             i = x << 2;
             y = (byte) (x << 2)
             System.out.print(i + " " + y);
        } 
    }

 

  • 1]

    0 64
  • 2]

    64 0
  • 3]

    0 256
  • 4]

    256 0
Solution
6
Discuss

Which operator is used to invert all the digits in a binary representation of a number?

  • 1]

    ~
  • 2]

    <<<
  • 3]

    >>>
  • 4]

    ^
Solution
7
Discuss

Which of these operators can skip evaluating right hand operand?

  • 1]

    !
  • 2]

    |
  • 3]

    &
  • 4]

    &&
Solution
8
Discuss

Which of the following operators can operate on a boolean variable?

   1. &&
   2. ==
   3. ?:
   4. +=
  • 1]

    3 & 2
  • 2]

     1 & 4
  • 3]

     1, 2 & 4
  • 4]

    1, 2 & 3
Solution
9
Discuss

What will be the output of the following Java program?

    class rightshift_operator 
    {
        public static void main(String args[]) 
        {    
             int x; 
             x = 10;
             x = x >> 1;
             System.out.println(x);
        } 
    }

 

  • 1]

    10
  • 2]

    5
  • 3]

    2
  • 4]

    20
Solution
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