How do You Find the Number of Places After the Decimal Point with BigDecimal?

Question

I'm trying to use BigDecimals to calculate something and then round to 5 decimal places if it has more than that. How can I do this?

Would scale() work?

Daniel Alder · Accepted Answer · 2015-01-22T23:29:33.467

0

Did you already crawl through JavaDoc, especially the function precision()?

And this here might be a direct solution which makes it needless to check the precision first:

yournumber.round(new MathContext(5, HALF_UP));

And after that use stripTrailingZeros() (thx to @GregKopff)

edited Jan 22 '15 at 23:29

answered Jan 22 '15 at 22:43

Daniel Alder

I've tried that, but if (for example) the number is 1, it says 1.00000. – Jengland Dev Jan 22 '15 at 23:00
1

Then also use `stripTrailingZeros()`. – Greg Kopff Jan 22 '15 at 23:07
It's always a good idea to make a proof, also for you to show us what's going wrong. Here the final solution: http://pastebin.com/26Udw915 – Daniel Alder Jan 22 '15 at 23:36
Thank you, the number.round and stripTrailingZeroes() part worked. – Jengland Dev Jan 23 '15 at 02:44

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