How to round to 2 decimals during calculation in Java

Question

For one calculation I need to round to 2 decimals during the calculation.

Relevant code:

count = 500;
price = 0.00077
pounds = 150,000
double value = ((350 - count) * price) * (pounds / 100);

To get the result I need, (350 - count) * price must round to 2 decimal places before doing the pounds / 100 so how might i round to 2 decimal places during a calculation?

`Math.round(((350 - count) * price)*100d)/100d` – Nonika Nov 18 '17 at 07:43 — Nonika, Nov 18 '17 at 07:43

score 0 · Accepted Answer · edited May 07 '18 at 09:14

0

In java you can round it some think like that

double roundOff = Math.round(a * 100.0) / 100.0;

in your case

Math.round(((350 - count) * price) * 100d) / 100d

edited May 07 '18 at 09:14

Kamran

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answered Nov 18 '17 at 07:44

Umer Zaman

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That did exactly what i needed. Thanks very much. – Tiana Nov 18 '17 at 07:56
@Atrus Err, no. This fails most of the time, and the more precisio you want, the more it fails. See my answer in the duplicate. – user207421 Nov 18 '17 at 08:39

How to round to 2 decimals during calculation in Java

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