>>>

[Ash Rai]

Can somebody explain this with an eg?
The value returned by >>> will never be negative as long as the value of the right operand is not divisible by 32.
I would like to know if there are any chances of getting a negative number when the right operand is divisible by 32.
Thanks

[bill bozeman]

Yep, you can get a negative number with >>> when right-hand value is divisible by 32. The reason is that if the left hand value is an int, then you can only shift by 31 places at most. A shift by 32 places does nothing to the value. If you try to shift an int by 33 places than it does a shift by the value 32%33 or 1.
So if you have:
-1 >>> 32 or -1 >>> 64 etc... you will get -1 becuase it is not performing the shift at all. Any other value on the right hand side will make the result a positive.
Bill

[Ash Rai]

Thanks Bill. That was nice.

[George Toronto]

Hi, Ash
As Bill said, you can shift a given integral value by using shift-right-with-zero-fill(>>>). If the right operand is equals 32, then the original value is the result. when the right operand is bigger than 32 but not the integral times of 32, the result is the result of >>>(rOp -32). Maybe the following can help u undertand it:

// To test shift >>> for positive and negative int.
class Shift{
public static void main(String[] args){
int negative = -21;
int positive = 1;
System.out.println("negative shifts 31 bits = "+ (negative>>>31));
System.out.println("positive shifts 31 bits = "+ (positive>>>31));
System.out.println("negative shifts 32 bits = "+ (negative>>>32));
System.out.println("positive shifts 32 bits = "+ (positive>>>32));
System.out.println("negative shifts 33 bits = "+ (negative>>>33));
System.out.println("positive shifts 33 bits = "+ (positive>>>33));
System.out.println("negative shifts 64 bits = "+ (negative>>>64));
System.out.println("positive shifts 64 bits = "+ (positive>>>64));
System.out.println("negative shifts 65 bits = "+ (negative>>>65));
System.out.println("positive shifts 65 bits = "+ (positive>>>65));
}
}

regds
George

[Ash Rai]

Thanks George!!!