CODEWITHSUNDEEP
javanumber-formatting
uma
uma

Reputation: 1577

how to take same formate out put 2.5 and 2,5?

Input can be given both way in my software, when I give 2.5 , it return 2.5. but whem I given 2,5 it give me, 2.0 . This is my code ; 

 public PrescriptionNotationParser()
  {
    final NumberFormat numberFormat = NumberFormat.getInstance();

    if (numberFormat instanceof DecimalFormat)
    {
      doseValueFormat = (DecimalFormat) numberFormat;
      doseValueFormat.applyPattern("##.########");
      decimalFormatSymbols = doseValueFormat.getDecimalFormatSymbols();
    }
  }

  private double parse(final String valueStr)
  {
   try
    {
      return doseValueFormat.parse(valueStr).doubleValue();
   }
  catch (ParseException e)
  {
    return 0;
   }
}

Expect some expertise help to resolve this issue ?

Upvotes: 0

Views: 134

Answers (2)

robni
robni

Reputation: 1066

If you want to display your input always in english format (with a point . ) You can use the placeholder %s-String for any primitive type.

float x = 3.15f, y = 1.2345f;

System.out.printf("%.4s and %.5s", x, y);

Output: 3.15 and 1.234

%s is always english formatting regardless of localization.

If you want a specif local formatting, you could also do:

import java.util.Locale;

float x = 3.15f, y = 1.2345f;

System.out.printf(Locale.GERMAN, "%.2f and %.4f", x, y);

Output: 3,15 and 1,2345

And of course you can use an if condition like if Locale.GERMAN then display Locale.GERMAN

Upvotes: 1

Heng Lin
Heng Lin

Reputation: 96

2.5 is a float, but 2,5 isn't float format, so 2,5 will only get the previous value 2.

If you want support 2,5 to 2.5

private double parse(String valueStr)//remove final
  {
   try
    {
      //replace valueStr "," to "."
      return doseValueFormat.parse(valueStr.replace(",", ".")).doubleValue();
   }
  catch (ParseException e)
  {
    return 0;
   }
 }

If you want 23,000 .50 to 23000.5, only remove , and space.
a float . only one at most.

private double parse(String valueStr)//remove final
  {
   try
    {
      //valueStr remove all "," and " "
      return doseValueFormat.parse(valueStr.replaceAll(",| ", "")).doubleValue();
   }
  catch (ParseException e)
  {
    return 0;
   }
 }

Upvotes: 2

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