System.out.println("free for guests: "+this.channelAdministration.getFreeForGuestList());
    public void startServer() throws java.io.FileNotFoundException, java.io.IOException {        this.clientServantList = new Vector();        this.dataBaseIO = new DataBaseIO();        this.channelAdministration = new ChannelAdministration(this.dataBaseIO);        this.userAdministration = new UserAdministration(this.dataBaseIO, this.channelAdministration);        this.dataBaseIO.setUserAdministration(this.userAdministration);        this.dataBaseIO.setChannelAdministration(this.channelAdministration);        this.dataBaseIO.loadFromDisk();        try {            this.serverSocket = new ServerSocket(this.SERVER_PORT, this.LISTEN_QUEUE_LENGTH);            System.out.println("Server started on " + this.serverSocket.getInetAddress() + ":" +                this.serverSocket.getLocalPort());        } catch (java.io.IOException e) {            System.out.println(e);        }        this.listen();    }