Wrong double calculation

Question

some calculations with doubles return the wrong result.

E.g.

System.out.println(""+(0.05+0.01));

output

0.060000000000000005

What can I do to correct this error?

Learn to use the `BigDecimal` class. – Dawood ibn Kareem Jun 22 '14 at 09:24 — Dawood ibn Kareem, Jun 22 '14 at 09:24
There's no error. Doubles have finite precision. – David Schwartz Jun 22 '14 at 09:25 — David Schwartz, Jun 22 '14 at 09:25

score 1 · Accepted Answer · edited May 23 '17 at 10:25

1

Doubles are not made for precise calculations (see Round to 2 decimal places) - for precise calculations, use BigDecimal instead.

edited May 23 '17 at 10:25

Community

answered Jun 22 '14 at 09:25

Smutje

BigDecimal only has a precision advantage for numbers with terminating decimal expansions. It is no better at representing one third than double. – Patricia Shanahan Jun 22 '14 at 10:19

1 Answers1