displaying numbers in fa_IR locale

Question

I'm trying to display numbers in fa_IR locale.
I'm using this code:

NumberFormat.getNumberInstance(new Locale("fa","IR")).format(myNum);

But this prints English (en_US) numbers.
How can I display a number in a specific locale in Java?

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Example:
For example if myNum be 12 the output should be ۱۲

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Edit:
It seems java.text.NumberFormat doesn't support fa_IR locale (?).
Using com.​ibm.​icu.​text.​NumberFormat instead, fixes the problem!

Answer 1

As you know Oracle (or it's better to say Java Programming language ) does not support Persian directly, in order to have a Persian( or Arabic ) NumberFormat you can use the below codes:

NumberFormat numberFormat = NumberFormat.getNumberInstance(new Locale.Builder().setLanguageTag("ar-SA-u-nu-arab").build());
System.out.println(numberFormat.format(1234567890));

The output will be like this: ۱،۲۳۴،۵۶۷،۸۹۰ as you can see by using this kind of code your output number not only will be in Persian style but also its each three numbers will be grouped and separated by a "," character.

Answer 2

Try this code:

NumberFormat nf = NumberFormat.getNumberInstance(new Locale("fa"));
System.out.println(nf.format(1234567890));

output:

۱۲۳٬۴۵۶٬۷۸۹