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    public static boolean isEmailValid(String email) {
        Pattern pattern;
        Matcher matcher;
        final String EMAIL_PATTERN =
                "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@"
                        + "[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
        pattern = Pattern.compile(EMAIL_PATTERN);
        matcher = pattern.matcher(email);
        return matcher.matches();
    }