Trying to Filter JCombobox

[Dhiren Lodhia]

I have a JComboBox wiith name of countries in it.i want it to be editable.when the use will type initial few letters the items in JCombobox will get filtered.
i have managed to write the filtering code.
following code does the filtering of items as the user types in to the JCombobox it works fine.

  
//Assuming my JComboBox obj name is cmbCountry;
   private void editing()
     {
          cmbCountry.getEditor().getEditorComponent().addKeyListener(new KeyAdapter()
            {
                public void keyReleased(KeyEvent e)
                {
                    if(e.getKeyCode()!=38 && e.getKeyCode()!=40 && e.getKeyCode()!=10)
                    {
                        String str = cmbCountry.getEditor().getItem().toString();
                        cmbCountry.removeAllItems();
                        boolean showPopup = false;

                       for(int i = 0;i < countryArr.size();i++)
                      {
                           if(countryArr.get(i).toLowerCase().indexOf(str.toLowerCase()) == 0)
                           {
                              cmbCountry.addItem(countryArr.get(i));
                              cmbCountry.setSelectedItem(countryArr.get(i));
                              showPopup = true;
                           }
                      }
                        cmbCountry.getEditor().setItem(new String(str));
                        JTextField textField = (JTextField) e.getSource();
                        textField.setCaretPosition(textField.getDocument().getLength());
                        
                        cmbCountry.hidePopup();

                        if (showPopup)
                        {
                           cmbCountry.showPopup();
                        }
                    }else if(e.getKeyCode() == KeyEvent.VK_ENTER){

                        //????????? here selected popup menu item sud get set in JCombobox but its not working
                        String str = cmbCountry.getEditor().getItem().toString();
                        System.out.println("Select Item is : "+str);
                        cmbCountry.setSelectedItem(str);
                        System.out.println("Enter Key Pressed");
                    }
                }
            });

     }

my only problem is after selecting some item from popup menu when i press Enter it does not get set in the JComboBox ???

can i do it without making the my simple code too complicated??

Thanks in advance...

[mark goking]

do you mean this?

http://tech.chitgoks.com/2009/11/06/autocomplete-jcombobox/