private List getFtp(String serverName, String login, String passwd) {
        FtpConnection ftp = null;
        List list = new ArrayList();
        
        try {
            ftp = new FtpConnection(false,0);
            log("Connection anonyme à " + serverName);
            ftp.connect(serverName);
            
            if (ftp.login(login, passwd)) {                
                ftp.changeDirectory("//usr");
                log("Identification réussie !");
                log("Le type de system est: " + ftp.getSystemType());
                log("Le dossier courant est: " + ftp.getCurrentDirectory());
                String files = ftp.listFiles();
                String subDirs = ftp.listSubdirectories();
                log("Fichiers:\n" + files);
                log("Sous dosssiers:\n" + subDirs);
                
                // on se contente de lister les fichiers présents
                StringTokenizer st = new StringTokenizer(files, ftp.lineTerm);
                while (st.hasMoreTokens()) {
                    String file = st.nextToken();
                    list.add(file);
                }
                
                ftp.logout();
                ftp.disconnect();
                log("Disconnect et loggout.");
            }  else  {
                log("Connection impossible :/.");
            }
        }  catch(Exception e)  {
            e.printStackTrace();
            try { ftp.disconnect(); }  catch(Exception e2)  {}
        }
        return list;
    }

    public String button1_action() {
        String server = (String) textFieldServer.getValue();
        String login = (String) textFieldLogin.getValue();
        String passwd = (String) passwordField1.getValue();
        
        List list = getFtp(server, login, passwd);
        this.getSessionBean1().setList(list);
        return "case1";
    }