toPersianNumbers method
Converts English digits of a given string to their equivalent Persian digits.
Implementation
String toPersianNumbers() {
if (this.isNullOrWhiteSpace()) return '';
return toEnglishNumbers()
.replaceAll("0", "\u06F0")
.replaceAll("1", "\u06F1")
.replaceAll("2", "\u06F2")
.replaceAll("3", "\u06F3")
.replaceAll("4", "\u06F4")
.replaceAll("5", "\u06F5")
.replaceAll("6", "\u06F6")
.replaceAll("7", "\u06F7")
.replaceAll("8", "\u06F8")
.replaceAll("9", "\u06F9")
.replaceAll(".", ",");
}