Method pad

CodenameOne/src/com/codename1/security/Otp.java:275–285

(String s, int digits)

    }

    private static String pad(String s, int digits) {
        if (s.length() >= digits) {
            return s;
        }
        StringBuilder b = new StringBuilder(digits);
        for (int i = s.length(); i < digits; i++) {
            b.append('0');
        }
        b.append(s);
        return b.toString();
    }
}