private JComboBox<SituationTO> getComboBoxSituations() {
   if (comboBoxSituations == null) {
     comboBoxSituations = new JComboBox<SituationTO>();
     situations = frameMainListener.getAllSituatiosActive();
     for (SituationTO situationTO : situations) {
       comboBoxSituations.addItem(situationTO);
     }
   }
   return comboBoxSituations;
 }
  private void getNumberDeliveries() {

    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd/MM/yyyy");
    try {
      Date startDate = null;
      Date endDate = null;
      startDate = simpleDateFormat.parse(getFieldStartDate().getText());
      endDate = simpleDateFormat.parse(getFieldEndDate().getText());
      SituationTO situationSelected = (SituationTO) comboBoxSituations.getSelectedItem();
      numberDeliveries =
          frameMainListener.getNumberDeliveriesForProducts(
              startDate, endDate, situationSelected.getId());
    } catch (ParseException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
  }