ActionListener for JComboBox

Question

If I add an ActionListener to JComboBox or ComboBoxEditor I can get notified when user types some text into the combo-box and presses enter.
If I need to get notifications after user types each letter. What should I do ?
I'm stuck with this problem for a long time (I'm a beginner) - any help would be greatly appreciated. Thanks a lot,
--Sergei 

Answer 1

This would be my solution. There may be more but, this is the mest i can do;)
So adding KeyListener.
Let "cb" be your JComboBox object name, what you have to do is:
cb.setEditable(true);
ComboBoxEditor ce = cb.getEditor();
ce.getEditorComponent().addKeyListener(this);
here is the entire example. This progtram will count your keyevents
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Example extends Frame implements KeyListener
     private JComboBox cb = new JComboBox();
     private JLabel lab = new JLabel(" ");
     int numb = 0;
     public Example()
          cb.setEditable(true);
          ComboBoxEditor ce = cb.getEditor();
          ce.getEditorComponent().addKeyListener(this);
          setLayout(new FlowLayout());
          add(cb);
          add(lab);
          setSize(200,200);
          show();
     public static void main(String args[])
          new Example();          
     public void keyPressed(KeyEvent e)
     public void keyReleased(KeyEvent e)
               numb ++;
               lab.setText(Integer.toString(numb));
     public void keyTyped(KeyEvent e)