How to use

org.apache.commons.net.ftp.FTPConnectionClosedException

constructor

private void __send(String message) throws IOException,
    FTPConnectionClosedException, SocketException {
  try{
    _controlOutput_.write(message);
    _controlOutput_.flush();
  }
  catch (SocketException e)
  {
    if (!isConnected())
    {
      throw new FTPConnectionClosedException("Connection unexpectedly closed.");
    }
    else
    {
      throw e;
    }
  }
}

throw new FTPConnectionClosedException(
    "Connection closed without indication.");
      throw new FTPConnectionClosedException(
        "Connection closed without indication.");
throw new FTPConnectionClosedException("FTP response 421 received.  Server closed connection.");

@Override
public FTPFile mlistFile(String pathname) throws IOException {
 throw new FTPConnectionClosedException();
}

throw new FTPConnectionClosedException(
  "Connection closed without indication.");
    throw new FTPConnectionClosedException(
      "Connection closed without indication.");
throw new FTPConnectionClosedException(
  "FTP response 421 received.  Server closed connection.");

throw new FTPConnectionClosedException("Connection unexpectedly closed.");

throw new FTPConnectionClosedException(
  "Connection closed without indication.");
    throw new FTPConnectionClosedException(
      "Connection closed without indication.");
throw new FTPConnectionClosedException("FTP response 421 received.  Server closed connection.");

throw new FTPConnectionClosedException("Connection unexpectedly closed.");