Regex java email validation

System.out.println("E-Mail Adressen: " + emailAdressen("muster@muster.de"));

public static boolean emailAdressen(String emailAdressen) {
		Pattern pattern = Pattern.compile("^[A-Z0-9_!#$%&'*+/=?`{|}~^-]+(?:\\.[A-Z0-9_!#$%&'*+/=?`{|}~^-]+↵\n" +
				")*@[A-Z0-9-]+(?:\\.[A-Z0-9-]+)*$", Pattern.CASE_INSENSITIVE);
		Matcher matcher = pattern.matcher(emailAdressen);
		return matcher.find();
	}

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