Java decimal point given by user

Question

How to printf decimal point by user? For example:

float a = 122.32445;

int decimal = 2;

And I want to print 122.32 I know that exist:

System.out.printf("%.2f", a);

But how to implement that decimal point there? I came up with something like this:

System.out.printf("%.%df, decimal, a);

But it of course it doesn't work. Thanks for any help.

Possible duplicate of [Format Float to n decimal places](http://stackoverflow.com/questions/5195837/format-float-to-n-decimal-places) — Tom, Mar 05 '17 at 21:28

score 1 · Answer 1 · answered Mar 05 '17 at 21:33

1

System.out.printf("%." + decimal + "f", a);

answered Mar 05 '17 at 21:33

Hasan Aslam

score 0 · Answer 2 · answered Mar 05 '17 at 21:33

0

I would assume that

DecimalFormat decimalFormat = new DecimalFormat("##,##0.00");

does the trick.

answered Mar 05 '17 at 21:33

hubert.volz

2 Answers2