Java Programming - Operators and Assignments - Discussion

Discussion Forum : Operators and Assignments - Finding the output (Q.No. 4)
4.
What will be the output of the program?
class BitShift 
{
    public static void main(String [] args) 
    {
        int x = 0x80000000;
        System.out.print(x + " and  ");
        x = x >>> 31;
        System.out.println(x);
    }
}
-2147483648 and 1
0x80000000 and 0x00000001
-2147483648 and -1
1 and -2147483648
Answer: Option
Explanation:

Option A is correct. The >>> operator moves all bits to the right, zero filling the left bits. The bit transformation looks like this:

Before: 1000 0000 0000 0000 0000 0000 0000 0000

After: 0000 0000 0000 0000 0000 0000 0000 0001

Option C is incorrect because the >>> operator zero fills the left bits, which in this case changes the sign of x, as shown.

Option B is incorrect because the output method print() always displays integers in base 10.

Option D is incorrect because this is the reverse order of the two output numbers.

Discussion:
17 comments Page 2 of 2.

Bala phani said:   9 years ago
How to perform shift operation? Please explain me.

Shubham said:   9 years ago
Can anyone explain clearly how this answer came?

Satyam said:   1 decade ago
How you can say that it is in hexadecimal form?

Abhi said:   8 years ago
How can we say 0x80000000 as hexadecimal value?

Divya said:   9 years ago
Can anyone please explain it in detail?

Sangeetha said:   7 years ago
Thanks for your explanation @Fakru.
(1)

LIYAKAT said:   8 years ago
It's really helpful. Thanks.


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