Quiz Discussion

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

Which of these is returned by “greater than”, “less than” and “equal to” operators?

• 1]

  Integers

• 2]

  Floating – point numbers

• 3]

  Boolean

• 4]

  None of the mentioned

 What is the value stored in x in the following lines of Java code?

   int x, y, z;
    x = 0;
    y = 1;
    x = y = z = 8;

• 1]

  0

• 2]

  1

• 3]

  9

• 4]

  8

What will be the output of the following Java code?

    class ternary_operator 
    {
        public static void main(String args[]) 
        {        
             int x = 3;
             int y = ~ x;
             int z;
             z = x > y ? x : y;
             System.out.print(z);
        } 
    }

• 1]

  0

• 2]

  1

• 3]

  3

• 4]

  -4

Which of these have highest precedence?

• 1]

  ()

• 2]

  ++

• 3]

  *

• 4]

  >>

Which of these is not a bitwise operator?

• 1]

  &

• 2]

  &=

• 3]

  |=

• 4]

  <=

Which of the following can be operands of arithmetic operators?

• 1]

  Numeric

• 2]

  Boolean

• 3]

  Characters

• 4]

  Both Numeric & Characters

Which of these statements is correct?

• 1]

  true and false are numeric values 1 and 0

• 2]

  true and false are numeric values 0 and 1

• 3]

  true is any non zero value and false is 0

• 4]

  true and false are non numeric values

What will be the output of the following Java program?

    class Output 
    {
        public static void main(String args[]) 
        {    
             int a = 1;
             int b = 2;
             int c = 3;
             a |= 4;
             b >>= 1;
             c <<= 1;
             a ^= c;
             System.out.println(a + " " + b + " " + c);
        } 
    }

• 1]

  3 1 6

• 2]

  2 2 3

• 3]

  2 3 4

• 4]

  3 3 6

What should be expression1 evaluate to in using ternary operator as in this line?

 expression1 ?  expression2  :  expression3

• 1]

  Integer

• 2]

  Floating – point numbers

• 3]

  Boolean

• 4]

  None of the mentioned