public ArrayList<String> getOfflineUsers(String userItself) {
        System.out.println("getOfflineUsers");
        ArrayList<String> offlineUsers = new ArrayList();
        File file = new File(userFilePath);
        if (file.exists()) {
            System.out.println("file exists");
            try {

                BufferedReader br = new BufferedReader(
                        new InputStreamReader(
                        new FileInputStream(file)));
                String ligne;
                while ((ligne = br.readLine()) != null) {
                    String[] resultSplit = ligne.split(":");
                    System.out.println("current user: "+resultSplit[0]);
                    if (!resultSplit[0].equals(userItself)) {
                        offlineUsers.add(resultSplit[0]);
                    }
                    return offlineUsers;
                }
                br.close();
            } catch (Exception e) {
                System.out.println(e.toString());
            }
        }
        offlineUsers.add("There are currently no Users");
        return offlineUsers;
    }