share files between online instances and get the path of the file java

Question

I'm writting some code, to search in the network for online instances and share files between them. The user selects an instance and fill a field with the name of the file to look for (variable "searchName"). After this the system serialize the object and retrieve it to user instance. But i need to get the path of where the file is located on the other online instance.

Here is my sendData and ReceiveData, both methods are working, i receive a workbook and i can see it, but i really need to know where the file is located on the other instance that its sharing the file

 public boolean sendData(String ip, String searchName, String pattern) throws IOException, UnknownHostException, ClassNotFoundException {
        Socket aux;
        String destinationIP = "";
        int port = 0;

        for (AddressServiceTypePair aux_pair : onlineApps) {  //get the ip and port
            if (aux_pair.getIP().equals(ip)) {
                destinationIP = ip;
                port = aux_pair.getPort();
            }
        }

        if (!ip.equals(destinationIP)) {
            return false;
        }

        SocketAddress a = new InetSocketAddress(destinationIP, port); //Configure connection
        aux = this.networkController.getNewSocket();
        aux.connect(a);

        ObjectOutputStream data = new ObjectOutputStream(aux.getOutputStream());
        data.writeObject(searchName);  //Search for the file on the other instance with certain name
        data.flush();

        ObjectInputStream data2 = new ObjectInputStream(aux.getInputStream());

        Workbook answer = (Workbook) data2.readObject();

        aux.close();

        if (answer == null) {
            return false;
        }       
        return true;
    }


    public Workbook receiveData(String s) throws FormulaCompilationException, IOException {

        Workbook[] workbooks = uiController.getWorkbooks();
        for (Workbook wb : workbooks) {
            if (uiController.getWorkbookFileName(wb).equals(s)) {
                return wb;
            }
        }
        return null;
    }