Question

Possible Duplicate:
Why does int exp1 = 14/20*100; equals ‘0’ in java?

I am using this:

int newWidth = Math.round(297 * (40 / 414));

In the code the numbers are actually variables, but those are what they were holding, and when I run the code newWidth comes back as 0, and I was expecting 28 or 29. I don’t see what is wrong here…

Answer 1

40 / 414 is rounded to 0 immediately as it only works with integers. You must either cast one of the operands to double/float or use double immediately:

int newWidth = (int)Math.round(297 * (40.0 / 414));

or:

int newWidth = (int)Math.round(297 * ((double)40 / 414));