public void itemStateChanged(ItemEvent evt){//***Event
      if(evt.getStateChange() == ItemEvent.SELECTED) {
          if (evt.getSource() == cBox_Price) {
              que.setUserChoice(Q4_PriceDistance.PRICE);
          }else if (evt.getSource() == cBox_Distance) {
              que.setUserChoice(Q4_PriceDistance.DISTANCE);
          }
      }
  }