Quiz Discussion

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

• 1]

  true

• 2]

  false

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

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 code?

    class Relational_operator 
    {
        public static void main(String args[])
        {
            int var1 = 5; 
            int var2 = 6;
            System.out.print(var1 > var2);
        } 
    }

• 1]

  1

• 2]

  0

• 3]

  true

• 4]

  false

Which of these operators can skip evaluating right hand operand?

• 1]

  !

• 2]

  |

• 3]

  &

• 4]

  &&

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 statements are incorrect?

• 1]

  Assignment operators are more efficiently implemented by Java run-time system than their equivalent long forms

• 2]

  Assignment operators run faster than their equivalent long forms

• 3]

  Assignment operators can be used only with numeric and character data type

• 4]

  None of the mentioned

Which right shift operator preserves the sign of the value?

• 1]

  <<

• 2]

  >>

• 3]

  <<=

• 4]

  >>=

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

• 1]

  ~

• 2]

  <<<

• 3]

  >>>

• 4]

  ^

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