Calculating remainder of two doubles in java

Question

I have the following code :

Double x = 17.0;
Double y = 0.1;

double remainder = x.doubleValue() % y.doubleValue();

When I run this I get r

Answer 1

You need to compare your result which allows for rounding error.

if (remainder < ERROR || remainder > 0.1 - ERROR)

Also, don't use Double when you mean to use double