executorService = new ThreadPoolExecutor(1, 1, 2, TimeUnit.SECONDS, new ArrayBlockingQueue<Runnable>(100));

            FileDownloadThread.getInstance().setThreadParameters(imageBytes, eventId, currentUserId, servlet);
            future = executorService.submit(FileDownloadThread.getInstance());

            list = future.get();
        return list;

 @Override
    public List<PrinterImages> call() throws Exception {

            list = new ArrayList<>();
            List<String> namesList;
            namesList = ServicesFactory.INSTANCE.getFilesAttachService().ProccessEMF(imageBytes, "Printer_", eventId, currentUserId, servlet);
            for (int i = 0; i < namesList.size(); i++) {
                String name = nameList.get(i).getName();
                list.add(new PrinterImages(i + name,
                        "/" + name));
            }

        return list;
    }

inputOutPutGridPanel.addRowClickHandler(new RowClickEvent.RowClickHandler() {
            @Override
            public void onRowClick(RowClickEvent event) {
                eventNotePanel.setEvent(inputOutPutGridPanel.getSelectedItem());
                if ((
                         (Objects.equals(selectedDataType, isPrinter))
                        )&&(inputOutPutGridPanel != null)) {
                    if (inputOutPutGridPanel.getSelectedItem() != null) {
                            detail.setCurrentEvent(inputOutPutGridPanel.getSelectedItem(),EventHandler.getInstance().selectedTreeAgentId);
                    }
                }
            }
        });

 public void setCurrentEvent(InfoEvent currentEvent, long selectedAgentTreeId)
    {   initEventHandler(inOutContentClient);
       

        if (currentEvent.getEventType().equals("PRINTER")) {
            listViewExample.initializeStore(currentEvent);
        }

       
        }
    }

     public void intializeStrore(InfoEvent)
{
           
      proxy = new RpcProxy<Object, List<PrinterImages>>() {
               @Override
               public void load(Object loadConfig, AsyncCallback<List<PrinterImages>> callback) {
                   Service.INFOPERIMETR.getPrinterImagesUrls(event.getId(), callback);
               }
           };

           loader = new Loader<Object, List<PrinterImages>>(proxy);

           ModelKeyProvider<PrinterImages> keyProvider = new ModelKeyProvider<PrinterImages>() {
               @Override
               public String getKey(PrinterImages item) {
                   return item.getName();
               }
           };

           store = new ListStore<PrinterImages>(keyProvider);

           loader.addLoadHandler(new ListStoreBinding<Object, PrinterImages, List<PrinterImages>>(store));
           loader.load();
           listView.setStore(store);
           panel.forceLayout();
}

Service.INFOPERIMETR.getPrinterImagesUrls(event.getId(), callback);