JPanel not added correctly

Question

Hi
When the following code is invoked upon an item in a combo box being selected for the first time the gPSX_JPanel is removed but sSVI_JPanel is not added until I click anywhere on the application. After this the code works fine.
Can anyone suggest why?
Thanks
public void wasteWaterModel_JComboBox(ActionEvent e){
      if(wasteWaterModel_JComboBox.getSelectedItem().equals("SSVI"))
         tank_JPanels[2].remove(gPSX_JPanel);
         tank_JPanels[2].repaint();
         tank_JPanels[2].add(sSVI_JPanel);
         tank_JPanels[2].repaint();
}

Answer 1

Hi
I have tried this:
public void WasteWaterModel_JComboBox(ActionEvent e){
      if(WasteWaterModel_JComboBox.getSelectedItem().equals("SSVI"))
         Tank_JPanels[2].remove(GPSX_JPanel);
         Tank_JPanels[2].repaint();
         Tank_JPanels[2].add(SSVI_JPanel);
         Tank_JPanels[2].repaint();
         System.out.println("THIS WORKED");
}and 'THIS WORKED' always gets printed. When I first select the item SSVI in the combo box then GPSX_JPanel is removed so part of it seems to work. I just can't work out why SSVI_JPanel is not added until I click anywhere on the application.