Some bitwise problems..

[VolatileObject]

I have a short (16bits) storing true and false (1 and 0) in the lower 9 bits, and I want to be able to count the number of 1s (or 0).
Example: 0000000010111010 (answer would be 5 in this case, total # of 1s)

This is what I came up with(assuming n is the value and total is the amount of 1s):

int i = 0, total = 0;
while(i++ < 9)
    total += 1 - ~((n >>> 1) | 0xFFFE);

Is there a better way to do it in O(1) instead of O(n)?

Thanks in advance.