Java tutorial
//package com.java2s; public class Main { public static String toPersianNumbers(String str) { char[] persianNumbers = { '\u06F0', '\u06F1', '\u06F2', '\u06F3', '\u06F4', '\u06F5', '\u06F6', '\u06F7', '\u06F8', '\u06F9' }; StringBuilder builder = new StringBuilder(); for (int i = 0; i < str.length(); i++) { if (Character.isDigit(str.charAt(i))) { builder.append(persianNumbers[(int) (str.charAt(i)) - 48]); } else { builder.append(str.charAt(i)); } } return builder.toString(); } }