Java double value not exact

Asked Dec 24 '14 at 04:20

Active Dec 24 '14 at 04:20

Viewed 37 times

The loop

double d=1.00d;
for (int i=0; i<=3; i++)
    System.out.println(d+i*0.2);

is giving 1.2000001 (don't recall how many 0-s after the decimal, isn't regularly happening) sometimes.

What's the best way to get aroun this glitch? i'd ecpect to have 1.20 when i hits 1.

TIA

asked Dec 24 '14 at 04:20

user3880721

2

Use [`BigDecimal`](http://docs.oracle.com/javase/7/docs/api/java/math/BigDecimal.html) if you need precision. – PM 77-1 Dec 24 '14 at 04:22
BigDecimal seems too "costly" for a this much – user3880721 Dec 24 '14 at 04:29
1

If you need virtually infinite precision - use BigDecimal. `double` (as well as `float`) are inherently imprecise. – PM 77-1 Dec 24 '14 at 04:34

0 Answers0