Java – how do I evaluate this equation?

I think it's very self explanatory in the code Obviously, I don't evaluate the same thing over and over again, it's just an example number to explain my problem I guess it's overflow / underflow, but I don't know how to deal with it

@H_ 301_ 8@

@H_ 301_ 8@

double d = (1 / (684985+157781));

System.out.println(d); // returns 0.0
System.out.println(Math.log(d)); // returns -Infinity.

Solution

(1 / (684985 157781)) is an integer expression, so it becomes 0

@H_ 301_ 8@

Try changing 1 to 1.0 to force the expression to be a floating point number, or 1.0d to double@ H_ 301_ 8@