how to format a float like 0#.## in java?

Question

I get an input from the user. I want to print it in this format:

0#.##

or

##.##

how do I do this in java?

Today I'm using:

padWithZeroRightToPeriod(product.formats[index],Float.parseFloat(currentPrice));

and

private String padWithZeroRightToPeriod(String serverFormat, float unformattedNumber) {
  int nDigits = getNumberOfDigitsAfterPeriod(serverFormat);
  String floatingFormat = "%4." + nDigits + "f";
  String formattedPrice = String.format(floatingFormat, unformattedNumber);

  return formattedPrice
}

but it converts 08.56 to 8.56.

Delan Azabani · Accepted Answer · 2013-11-05T09:26:05.823

1

For two decimal places, and at least two whole digits, with leading zeroes:

String floatingFormat = "%05.2f";

The 0 pads the string with zeros instead of spaces.
The 5 is the minimum total field width, including the whole, fractional and decimal point parts.
The 2 is the exact number of decimal places to be printed.

edited Nov 05 '13 at 09:26

answered Nov 05 '13 at 09:11

Delan Azabani

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score 0 · Answer 2 · answered Nov 05 '13 at 09:10

try using DecimalFormatter

        float f= 3.44f;                 
        DecimalFormat df = new DecimalFormat("00.##");    
        System.out.println("formatted  value::"+ df.format(f));

============================================================================== updated your function

private static String padWithZeroRightToPeriod(String serverFormat, float unformattedNumber) {
        DecimalFormat df = new DecimalFormat(serverFormat);    
        return df.format(unformattedNumber);
    }

calling function

padWithZeroRightToPeriod("00.##",3.44f)

how to format a float like 0#.## in java?

2 Answers2