What is the output of this program? - JAVA MCQs

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Rajeev Malhotra • 3.97K Points
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Q. What is the output of this program?

Code:

public class Bitwise_Operator 
    {
        public static void main(String args[])
        {
            int num1 = 30;
            int num2 = ~num1;
            System.out.print(num1 + " " + num2);     	
        } 
    }

(A) 30 -31

(B) 40 -40

(C) 30 -30

(D) 31 -30

Correct answer: Option(A)

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Explanation by: Rajeev Malhotra

Unary not operator, ~, inverts all of the bits of its operand. 30 in binary is 00011110 in using ~ operator on num1 and assigning it to num2 we get inverted value of 30 i:e 11100001 which is -31 in decimal.
output: 30 -31

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