问如何在enterprisedt.net.ftp.FileTransferClient中传递主机文件名

EN

    public static void main(String[] args) {

    // extract command-line arguments
    String host = "111.111.111.111";
    String username = "bbbbbbbb";
    String password = "cccccccccp";
    String filename = "ABC.DEF.GHI.JKL(0)";

    // set up logger so that we get some output
    Logger log = Logger.getLogger(ConnectToServer.class);
    Logger.setLevel(Level.INFO);

    FileTransferClient ftp = null;

    try {
        // create client
        log.info("Creating FTP client");
        ftp = new FileTransferClient();

        // set remote host
        log.info("Setting remote host");
        ftp.setRemoteHost(host);
        ftp.setUserName(username);
        ftp.setPassword(password);

        // connect to the server
        log.info("Connecting to server " + host);
        ftp.connect();
        log.info("Connected and logged in to server " + host);

        //Downloading file from server
        log.info("Downloading file");
        ftp.downloadFile(filename+".copy", filename);
        log.info("File downloaded");

        // Shut down client
        log.info("Quitting client");
        ftp.disconnect();

        log.info("Example complete");

    } catch (Exception e) {
        e.printStackTrace();
    }
}