Ftp com apache

try {
                    ftp.connect("0.0.0.0");
                    ftp.login(pro.getProperty("usuario"), pro.getProperty("senha"));
                    ftp.enterLocalPassiveMode();
                    ftp.changeWorkingDirectory(dirFTP);
                    ftp.enterLocalPassiveMode();
                    FTPFile[] files = ftp.listFiles();
                    for (int i = 0; i < files.length; i++) {
                        if (files[i] != null) {
                            if (files[i].isDirectory()) {
                            } else {
                                String f = files[i].getName();
                                nmArq = new SelectFTP();
                                nmArq.setNmFTP(f);
                                nmArq.setData(format.format(files[i].getTimestamp().getTime()));

                                arq1.add(nmArq);
                            }
                        }
                    }
                    Disconecta();
                } catch (SocketException ex) {
                    Logger.getLogger(FuncoesFTP.class.getName()).log(Level.SEVERE, null, ex);
                } catch (IOException ex) {
                    Logger.getLogger(FuncoesFTP.class.getName()).log(Level.SEVERE, null, ex);
                }