problem with JTabbedPane throwing exception

I have a JTabbedPane in a window with 2 tabs. If I close the last tab and the app loses focus, an exception is thrown:

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 1 (1)
1313 :BasicTabbedPaneUI.java javax.swing.plaf.basic.BasicTabbedPaneUI.getTabBounds()
1248 :BasicTabbedPaneUI.java javax.swing.plaf.basic.BasicTabbedPaneUI.getTabBounds()
3258 :BasicTabbedPaneUI.java javax.swing.plaf.basic.BasicTabbedPaneUI$Handler.focusLost()
5380 :Component.java java.awt.Component.processFocusEvent()
5244 :Component.java java.awt.Component.processEvent()
1966 :Container.java java.awt.Container.processEvent()
3955 :Component.java java.awt.Component.dispatchEventImpl()
2024 :Container.java java.awt.Container.dispatchEventImpl()
3803 :Component.java java.awt.Component.dispatchEvent()
1810 :KeyboardFocusManager.java java.awt.KeyboardFocusManager.redispatchEvent()
836 :DefaultKeyboardFocusManager.java java.awt.DefaultKeyboardFocusManager.typeAheadAssertions()
526 :DefaultKeyboardFocusManager.java java.awt.DefaultKeyboardFocusManager.dispatchEvent()
3841 :Component.java java.awt.Component.dispatchEventImpl()
2024 :Container.java java.awt.Container.dispatchEventImpl()
3803 :Component.java java.awt.Component.dispatchEvent()
463 :EventQueue.java java.awt.EventQueue.dispatchEvent()
50 :SentEvent.java java.awt.SentEvent.dispatch()
161 :DefaultKeyboardFocusManager.java java.awt.DefaultKeyboardFocusManager$DefaultKeyboardFocusManagerSentEvent.dispatch()
188 :DefaultKeyboardFocusManager.java java.awt.DefaultKeyboardFocusManager.sendMessage()
591 :DefaultKeyboardFocusManager.java java.awt.DefaultKeyboardFocusManager.dispatchEvent()
3841 :Component.java java.awt.Component.dispatchEventImpl()
2024 :Container.java java.awt.Container.dispatchEventImpl()
1766 :Window.java java.awt.Window.dispatchEventImpl()
3803 :Component.java java.awt.Component.dispatchEvent()
463 :EventQueue.java java.awt.EventQueue.dispatchEvent()
93 :SequencedEvent.java java.awt.SequencedEvent.dispatch()
461 :EventQueue.java java.awt.EventQueue.dispatchEvent()
234 :EventDispatchThread.java java.awt.EventDispatchThread.pumpOneEventForHierarchy()
163 :EventDispatchThread.java java.awt.EventDispatchThread.pumpEventsForHierarchy()
157 :EventDispatchThread.java java.awt.EventDispatchThread.pumpEvents()
149 :EventDispatchThread.java java.awt.EventDispatchThread.pumpEvents()
110 :EventDispatchThread.java java.awt.EventDispatchThread.run()


It's a simple little app:

Code:

---

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.plaf.basic.BasicTabbedPaneUI;

public class TabTest extends JFrame
{
       
        public class MouseEventHandler implements MouseListener {
                TabsPane pane = null;
                public MouseEventHandler(TabsPane pane)
                {
                        this.pane = pane;
                }
       
                public void mouseClicked(MouseEvent m0)
                {
                        if(m0.getButton() == m0.BUTTON1){
                        }else if(m0.getButton() == m0.BUTTON2){
                        }else if(m0.getButton() == m0.BUTTON3){
                                System.out.println("mouse click");
                                try{
                                        pane.remove(pane.getSelectedComponent());
                                }catch(java.lang.Exception a){
                                        System.err.println(a);
                                }
                        }
                }
       
                public void mouseEntered(MouseEvent m0)
                {
                }
       
                public void mouseExited(MouseEvent m0)
                {
                }
       
                public void mousePressed(MouseEvent m0)
                {
                }
       
                public void mouseReleased(MouseEvent m0)
                {
                }
        }
       
       
        public class TabsPane extends JTabbedPane{
               
                public TabsPane()
                {
                        addMouseListener(new MouseEventHandler(this));
                }
        }
       
       
        public TabTest()
        {
                initializeMethod();
        }

        private void initializeMethod()
        {
                Container container=getContentPane();
                container.setLayout(new BorderLayout());
                TabsPane pane = new TabsPane();
                add(pane);
               
                pane.add(new TextArea("hello 1"));
                pane.add(new TextArea("hello 2"));
               
                addWindowListener(new WindowAdapter()
                {
                        public void windowClosing(WindowEvent e)
                        {
                                dispose();
                                System.exit(0);
                        }
                });
        }
       
       

        public static void main(String[] sCommand)
        {
                TabTest app=new TabTest();
                app.setBounds(133,100,532,400);
                app.setTitle("TabTest");
                app.setVisible(true);
        }

}

---

The exception doesn't seem to have negative consequences. The app continues to run like nothing happened. I'd still like to know how to fix this.

Thanks.

I've run your code and I can't get an exception to be generated. I've tried all combinations (I think) of closing order and gaining/losing focus and still no exception. Is there a very specific operating sequence to get the exception?

I've compiled it using jikes and javac and run it using java build 1.5.0.06-b05, what version are you running?