Is there a way to set String.format so that it won't display 00 decimals? For example I would like:
String.format("%.2f", 12.345d)
to display 12.34
but
String.format("%.2f", 12.3d)
to display 12.3 instead of 12.30
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2 Answers
Use DecimalFormat with setting rounding down, like:
DecimalFormat df = new DecimalFormat("0.##");
df.setRoundingMode(RoundingMode.DOWN) //rounding off
df.format(12.345d) //12.34
df.format(12.3d) //12.3
df.format(12.00) //12
1 Comment
Uncle Iroh
I prefer RoundingMode.UNNECESSARY myself. Otherwise your comment of "rounding off" is misleading. Also RoundingMode.HALF_UP works equally well.
Once you do the inital formatting with %.2f, one option is to run the resulting string through a regex based replace.
The regex : 0*$, should capture all trailing 0s at the end of the string/number.
So the full method call could be:
String.format("%.2f", 12.3).replaceAll("0*$", ""); //Will output "12.3"
3 Comments
Pshemo
While this solves case described in question, it could be worth providing solution for general case like
String.format("%.2f %.2f", 12.3, 1.4).Uncle Iroh
He would probably also want to get the period (.) in the case where it's double .00. So perhaps .replaceAll("\\.{0,1}0*$", "") or something.
m_callens
@Pshemo that's true, I didn't think of that