Check Mail Android Studio

checkMail.txt

    /**
     * Controllo se il campo è una mail
     */
    public static boolean isEmail(String email) {
        String expression = "^[\\w\\.]+@([\\w]+\\.)+[A-Z]{2,7}$";
        CharSequence inputString = email;
        Pattern pattern = Pattern.compile(expression, Pattern.CASE_INSENSITIVE);
        Matcher matcher = pattern.matcher(inputString);
        return matcher.matches();
    }