FULL PRODUCT VERSION :
java version "1.5.0_05"

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [verziószám: 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
I have created a list from which you can delete selected items pressing the 'DEL' button.
If the last item was selected and the list's content gets smaller because of a deletion (ex 1. and last item was selected and only first got deleted) the list's selection doesn't get updated, it will still try to get the last index which is now out of range, and will throw an Exception (even though contentChange event got fired, when an item got deleted)

See attached code for an example

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
compile and run the attached code.
Resize the window to see the list
Now select 1. and 3. element in the list
press 'DEL' button
press 'DEL' button again

the second 'DEL' will generate an ArrayIndexOutOfBounds, because it still thinks there is a 3. selected element even though the the handler of the 'DEL' button sent a contentChanged event

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
No errors
ACTUAL -
got an exception

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.util.Vector;
import javax.swing.ListModel;
import javax.swing.SwingUtilities;
import javax.swing.event.ListDataEvent;
import javax.swing.event.ListDataListener;
/*
 * ListSelectionError.java
 *
 * Created on 2005. november 20., 23:41
 */

/**
 *
 * @author Shawn
 */
public class ListSelectionError extends javax.swing.JFrame {
    Vector<String> data=new Vector<String>();
    
    /** Creates new form ListSelectionError */
    public ListSelectionError() {
        initComponents();
        MyListModel mlm=new MyListModel();
        list.setModel(mlm);
        list.addKeyListener(mlm);
        for(int i=0;i<3;i++) data.add("data "+i);
    }
    
    private void dataRemoved(String s) {
        
    }
    
    private class MyListModel extends KeyAdapter implements ListModel {
        java.util.Vector<ListDataListener> listDataListeners=new java.util.Vector<ListDataListener>();
        
        public void keyPressed(KeyEvent ke) {
            if(ke.getKeyCode()==ke.VK_DELETE) {
                Object[] values=list.getSelectedValues();
                data.remove(0);
                fireModelChanged();
                
            }
        }
        
        public void addListDataListener(ListDataListener ldl) {listDataListeners.add(ldl);}
        public void removeListDataListener(ListDataListener ldl) {listDataListeners.remove(ldl);}
        public String getElementAt(int i) {return(data.get(i));}
        public int getSize() {
            return(data.size());
        }
        protected void fireModelChanged() {
            if(listDataListeners.isEmpty()) return;
            final ListDataEvent lde=new ListDataEvent(list.getModel(), ListDataEvent.CONTENTS_CHANGED, 0, getSize());
            SwingUtilities.invokeLater(new Runnable(){public void run() {
                for(ListDataListener ldl:listDataListeners) ldl.contentsChanged(lde);
            }});
        }
    }
    
    
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">
    private void initComponents() {
        list = new javax.swing.JList();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        getContentPane().add(list, java.awt.BorderLayout.CENTER);

        pack();
    }
    // </editor-fold>
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new ListSelectionError().setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify
    private javax.swing.JList list;
    // End of variables declaration
    
}
---------- END SOURCE ----------