public String toString() { return newsgroup + (host == null ? "" : "@" + host);
public static String toString(Address[] addresses) {  StringBuffer result = new StringBuffer(); for (int a = 0; a < addresses.length; a++) { result.append(addresses[a].toString()); if (a > 0) { result.append(_separator); } } return result.toString();
    public String toString() {        return newsgroup + (host == null ? "" : "@" + host);    }