public static boolean checkEmail(String email) {
		String regex = "([a-zA-Z0-9_\\-\\.]+)@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.)|(([a-zA-Z0-9\\-]+\\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})";
		if (Pattern.matches(regex, email)) {
			return true;
		}
		return false;
	}