public String sendMessage(String messageWithName) {
        Set<String> clientList = this.updater.getClientList();
        for (String s : clientList) {
            try {
                // Angepasst
                this.udpVerbindung.send(s, this.userName + ": " + messageWithName);
            } catch (UnknownHostException ex) {
                Logger.getLogger(ChatClient.class.getName()).log(Level.SEVERE, null, ex);
                return "Fehler beim Ziel";
            } catch (UnsupportedEncodingException ex) {
                Logger.getLogger(ChatClient.class.getName()).log(Level.SEVERE, null, ex);
                return "Falsche Enkodierung, mit UTF8";
            }
        }
        return "";
    }