Listening to changes in tab selection on the JTabbedPane

How can I to listen to any new selection in another tab of the JTabbedPane?
supposed that I want the program to do a certain action each time the user select another tab with the mouse - and an action which is accordingly to the new selected index (of the new selected tab)...

http://java.sun.com/j2se/1.4.2/docs/api/javax/swing/JTabbedPane.html#addChangeListener(javax.swing.event.ChangeListener)

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http://forum.java.sun.com/thread.jspa?forumID=57&threadID=236766

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.plaf.*;
public class TabbedPaneListener extends JFrame
     JTabbedPane tabbedPane;
     public TabbedPaneListener()
          tabbedPane = new JTabbedPane();
          getContentPane().add(tabbedPane);
          tabbedPane.addChangeListener(new ChangeListener()
               public void stateChanged(ChangeEvent e)
                    System.out.println(e.getSource());
          tabbedPane.addMouseListener(new MouseAdapter()
               public void mouseClicked(MouseEvent e)
                    TabbedPaneUI ui = tabbedPane.getUI();
                    int tab = ui.tabForCoordinate(tabbedPane, e.getX(), e.getY());
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          newTab( "two" );
          newTab( "three" );
     private void newTab(String text)
          JPanel panel = new JPanel();
          panel.add( new JTextField(text) );
          tabbedPane.add( panel, text );
     public static void main(String args[])
        TabbedPaneListener frame = new TabbedPaneListener();
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        frame.setSize(300, 200);
        frame.setLocationRelativeTo( null );
        frame.setVisible(true);
}

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* '''Tabs configuration''', extracted from About:config entries - MozillaZine Knowledge Base http://dmcritchie.mvps.org/firefox/tabs_config.htm
* 001 '''Tab Capacity Test''' http://dmcritchie.mvps.org/firefox/tab_capacity/001_with_underscore.htm##
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* '''Tabs, Enlarge list-all-tabs button''' - Themes and Skins for Browser - userstyles.org http://userstyles.org/styles/18553
* '''Tabs Bar Minimal Size''' - Themes and Skins for Browser - userstyles.org http://userstyles.org/styles/9043
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This trick is working, but you see, the problem is more
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Both insertTab() and removeTabAt() (and maybe smth. else) causes this problem.
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I've never worked with Accesibility :(
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Need help.

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See screenshot. Both top and bottom views are FF4.

Listening to changes in tab selection on the JTabbedPane

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