private static final String EMAIL_PATTERN =
            "[a-zA-Z0-9\\+\\.\\_\\%\\-\\+]{1,256}\\@[a-zA-Z0-9][a-zA-Z0-9\\-]{0,64}(\\.[a-zA-Z0-9][a-zA-Z0-9\\-]{0,25})+";
    private static final String MOBILE_PATTERN =
            "(^01[0-2]{1}[0-9]{8}$)";
    private static final int MOBILE_NUMBER_SIZE = 11;
    private static final int PASSWORD_SIZE = 6;