Name: gm110360			Date: 06/10/2002


FULL PRODUCT VERSION :
java version "1.4.0_00"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0_00-b05)
Java HotSpot(TM) Client VM (build 1.4.0_00-b05, mixed mode)


FULL OPERATING SYSTEM VERSION :
SunOS unknown 5.8 Generic_108528-06 sun4u sparc
SUNW,Sun-Blade-10

A DESCRIPTION OF THE PROBLEM :
Netscape 6 w/ Java Plugin 1.3.1 and Netscape 6.2.2 w/ Java
Plugin 1.4 crash when JList is used as CellEditor &
CellRenderer in a JTable. This seems to occur only on
Solaris but was successfully reproduced on multiple machines
and Sun Solaris flavors.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1.Copy code below and compile.

2. Run in Netscape 6+ (as an applet), a simple table will be
displayed. Select the item in the JList (CRASH BABY).

3. Now try to refresh the browser (Look at it go!)

EXPECTED VERSUS ACTUAL BEHAVIOR :
Obviously, a browser crash is unexpected at this phase.



ERROR MESSAGES/STACK TRACES THAT OCCUR :
===== plugin.trace =====
java.lang.NullPointerException
	at javax.swing.JComponent.deregisterNextFocusableComponent(JComponent.java:992)
	at javax.swing.JComponent.removeNotify(JComponent.java:4293)
	at java.awt.Container.removeNotify(Container.java:2023)
	at javax.swing.JComponent.removeNotify(JComponent.java:4286)
	at javax.swing.JTable.removeNotify(JTable.java:477)
	at java.awt.Container.removeNotify(Container.java:2023)
	at javax.swing.JComponent.removeNotify(JComponent.java:4286)
	at java.awt.Container.removeNotify(Container.java:2023)
	at javax.swing.JComponent.removeNotify(JComponent.java:4286)
	at java.awt.Container.removeNotify(Container.java:2023)
	at javax.swing.JComponent.removeNotify(JComponent.java:4286)
	at javax.swing.JRootPane.removeNotify(JRootPane.java:673)
	at java.awt.Container.removeNotify(Container.java:2023)
	at java.awt.Container.removeNotify(Container.java:2023)
	at sun.plugin.viewer.MNetscapePluginObject.setWindow(MNetscapePluginObject.java:260)
	at sun.plugin.navig.motif.Plugin.doit(Plugin.java:263)
	at sun.plugin.navig.motif.Plugin.start(Plugin.java:96)

This bug can be reproduced always.

---------- BEGIN SOURCE ----------
===== TestApplet.java =====
package com.e4e.uitools.calendar;

import javax.swing.*;
import javax.swing.table.DefaultTableModel;

public class TestApplet extends JApplet {
public void init() {
    JTable table = new JTable();
    table.setDefaultRenderer(Object.class, new ListRenderer());
    table.setDefaultEditor(Object.class, new ListRenderer());
    table.setModel(new DefaultTableModel(3,3));
    this.getContentPane().add(table);
}
}

===== ListRenderer.java =====package com.e4e.uitools.calendar;

import java.awt.Component;
import java.util.EventObject;

import javax.swing.*;
import javax.swing.event.CellEditorListener;
import javax.swing.table.*;

public class ListRenderer extends JList implements TableCellEditor,
TableCellRenderer {

    /**
     * Constructor for ListRenderer.
     */
    public ListRenderer() {
        super();
        DefaultListModel model = new DefaultListModel();
        model.addElement("CRASH BABY);
        this.setModel(model);
    }

    public Component getTableCellEditorComponent(
        JTable table,
        Object value,
        boolean isSelected,
        int row,
        int column) {
        return this;
    }

    public Component getTableCellRendererComponent(
        JTable table,
        Object value,
        boolean isSelected,
        boolean hasFocus,
        int row,
        int column) {
        return this;
    }

    public void addCellEditorListener(CellEditorListener l) {
    }

    public void cancelCellEditing() {
    }

    public Object getCellEditorValue() {
        return null;
    }

    public boolean isCellEditable(EventObject anEvent) {
        return true;
    }

    public void removeCellEditorListener(CellEditorListener l) {
    }


    public boolean shouldSelectCell(EventObject anEvent) {
        return false;
    }

    public boolean stopCellEditing() {
        return false;
    }


}


---------- END SOURCE ----------
(Review ID: 153408) 
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