private void InsertBuget() throws SQLException {
   ExtragereDate();
   String insertOfBuget =
       "Insert into buget (denumire, valoare, data_inceput, data_sfarsit, detalii_buget)"
           + "value (?,?,?,?,?)";
   ps = connected.prepareStatement(insertOfBuget);
   ps.setInt(1, VenitNou.getTip());
   ps.setBigDecimal(2, VenitNou.getValoare());
   ps.setString(3, VenitNou.getData_inceput());
   ps.setString(4, VenitNou.getData_sfarsit());
   ps.setString(5, VenitNou.getDetalii());
   ps.executeUpdate();
 }
  private void ExtragereDate() {
    item = jcbxVenituri.getSelectedItem();
    value = ((ItemsOfComboBox) item).getId();
    VenitNou.setTip(value);

    BigDecimal venit = new BigDecimal(jtfVenit.getText());
    VenitNou.setValoare(venit);

    Date data_inceput = jDataInceput.getDate();
    SimpleDateFormat format = new SimpleDateFormat("yyyy/MM/dd");
    String date_inceput = format.format(data_inceput);
    VenitNou.setData_inceput(date_inceput);

    Date data_sfarsit = jDataSfarsit.getDate();
    SimpleDateFormat formatSf = new SimpleDateFormat("yyyy/MM/dd");
    String date_sfarsit = formatSf.format(data_sfarsit);
    VenitNou.setData_sfarsit(date_sfarsit);

    VenitNou.setDetalii(jtfDetaliiBuget.getText());
  }