Number Format (Comma Separation) as per locale

Question

I have a requirement to show a number value like 123456789.905 in the following format 123,456,789.90. But the comma separation changes depending on the locale selected in the phone (as if with US English selected comma separation is 3 places and if India English is selected it is like 12,34,56,789.90).

How can I format my Double?

It may be helpful if you post your current code so we know what you've tried. — Duncan Jones, Jan 02 '14 at 12:53
Do you want the number to be formatted the same way in any language? I mean... should it be `123,456,789.90` regardless of the current locale? — René Link, Jan 02 '14 at 13:04

score 3 · Answer 1 · answered Jan 02 '14 at 13:00

So, java.text.NumberFormat doesn't slove the problem, unfortunately, but com.ibm.icu.text.NumberFormat does.

You can use this:

Double d = 123456789.905;
com.ibm.icu.text.NumberFormat format = com.ibm.icu.text.NumberFormat.getNumberInstance(new Locale("en", "in"));
format.setMinimumFractionDigits(2);
format.setMaximumFractionDigits(2);

System.out.println(format.format(d));

This outputs: 12,34,56,789.90.

score 2 · Answer 2 · edited May 23 '17 at 10:29

For the generic case, use java.text.NumberFormat:

NumberFormat nf = NumberFormat.getInstance();
String formatted = nf.format(yourDoubleValue);

By default getInstance() returns a NumberFormat that is configured as appropriate for the current Locale. You can change the configuration yourself, too.

The "comma separation" is called "grouping".

For the specific case of grouping in an Indian currency format, see: Displaying Currency in Indian Numbering Format

score 0 · Answer 3 · answered Jan 02 '14 at 12:55

Try this one:

try {
                    Locale l = Locale.getDefault();
                    NumberFormat nf = NumberFormat.getInstance(l);
                    String formato = NumberFormat.getInstance().format(your_data);

                } catch (Exception e) {
                    e.printStackTrace();}

score 0 · Answer 4 · answered Jan 02 '14 at 12:55

Use NumberFormat, which helps you to format and parse numbers for any locale.

Your code can be completely independent of the locale conventions for decimal points, thousands-separators, or even the particular decimal digits used, or whether the number format is even decimal.

Locale fmtLocale = Locale.getDefault();
NumberFormat formatter = NumberFormat.getInstance(fmtLocale);
formatter.format(your_number);

score 0 · Answer 5 · answered Jan 02 '14 at 13:11

Hm, I have not found for any locale in NumberFormat.getAvailableLocales() a format with only two digits between grouping signs (for example for new Locale("en", "IN")). So I think you have to use DecimalFormat-pattern like this:

DecimalFormat df = new DecimalFormat("##,##,##,##,##.###");
System.out.println(df.format(123456789.905));
// Output: 1.23.45.67.89,905

It is not exactly the same since DecimalFormat is not able to have varying counts of grouping sizes, but maybe this is acceptable for you.

score 0 · Answer 6 · answered Jan 02 '14 at 13:12

0

NumberFormat nf = NumberFormat.getInstance(Locale.getDefault());

double value = nf.parse(iValue).doubleValue();

answered Jan 02 '14 at 13:12

Munesh

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Number Format (Comma Separation) as per locale

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