String statement = "salam سلام"; final int FIRST_LETTER = 1569; final int LAST_LETTER = 1610; int persian = 0; int other = 0; for (int i = 0; i < statement.length(); i++) { int j = statement.codePointAt(i); if (j >= FIRST_LETTER && j <= LAST_LETTER) { persian++; } else { other++; } } System.out.println("count of persian letters: = " + persian); System.out.println("count of other letters: = " + other);