Name: gm110360 Date: 07/31/2003


FULL PRODUCT VERSION :
PLUGIN:
-------
Java(TM) Plug-in: Version 1.4.1_01
Anv�nder JRE-version 1.4.1_01 Java HotSpot(TM) Client VM

APPLETVIEWER:
-------------
java version "1.3.1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1-b24)
Java HotSpot(TM) Client VM (build 1.3.1-b24, mixed mode)



FULL OS VERSION :
Windows XP 5.1.2600

EXTRA RELEVANT SYSTEM CONFIGURATION :
IE 6.0

A DESCRIPTION OF THE PROBLEM :
This is basically a request to reopen Bug 4289940 as the reason to
close it with "not a bug" did not apply to my situation.
"I think that all manifestations of this exceptions are produced by
incorrect overriding of Container's removeNotify() method."

As you can see in the test cases I do not override the removeNotify()
method but the exception is thrown every time I run the code with
the plugin.

I can also get this situation if I use the 1.3.1 appletviewer.
The exception occurs if I close the window with the close button [x],
by pressing alt-F4 or using the menu alternative applet->close.
NOTE! It does not occur if I close the window by using the menu alternative
applet->exit (The last alternative.)
(I am aware that the appletviewer might do an incorrect override of
removeNotify() but the different behaviour might be worth investigating.)



STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1) Compile the applets given and put them on a web server.

2) Surf to the applet using IE with plugin or the appletviewer.

3) Click on the applet and press the 'a' key.

4a) If using the appletviewer, close the window using alt-F4
    or clicking on the close button [x].
4b) If using IE with plugin, surf to another page,
    e.g. http://java.sun.com

5) Examine java consol/output

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The output shall show:

stop
destroy

ACTUAL -
The output shows:

stop
destroy
java.lang.IllegalStateException: Can't dispose InputContext while it's active
...

ERROR MESSAGES/STACK TRACES THAT OCCUR :
PLUGIN:
-------
java.lang.IllegalStateException: Can't dispose InputContext while it's active at sun.awt.im.InputContext.dispose(Unknown Source)
at java.awt.Window$1$DisposeAction.run(Unknown Source)
at java.awt.Window.dispose(Unknown Source)
at sun.plugin.viewer.frame.IExplorerEmbeddedFrame.windowClosing(Unknown Source)
at java.awt.Window.processWindowEvent(Unknown Source)
at java.awt.Window.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

APPLETVIEWER:
-------------
Exception occurred during event dispatching:
java.lang.IllegalStateException: Can't dispose InputContext while it's active
        at sun.awt.im.InputContext.dispose(InputContext.java:553)
        at java.awt.Window$1$DisposeAction.run(Window.java:470)
        at java.awt.Window.dispose(Window.java:479)
        at sun.applet.AppletViewer.appletClose(AppletViewer.java:747)
        at sun.applet.AppletViewer$1.windowClosing(AppletViewer.java:185)
        at java.awt.Window.processWindowEvent(Window.java:800)
        at java.awt.Window.processEvent(Window.java:776)
        at java.awt.Component.dispatchEventImpl(Component.java:2593)
        at java.awt.Container.dispatchEventImpl(Container.java:1213)
        at java.awt.Window.dispatchEventImpl(Window.java:914)
        at java.awt.Component.dispatchEvent(Component.java:2497)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:339)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchTh
read.java:131)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
ad.java:98)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:85)



REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public class TestApplet extends java.applet.Applet {
  private int dir;
  public void start() {
    enableEvents(java.awt.AWTEvent.KEY_EVENT_MASK);
  }
  public void stop() {
    disableEvents(java.awt.AWTEvent.KEY_EVENT_MASK);
    System.out.println("stop");
  }
  public void destroy() {
    System.out.println("destroy");
  }
  protected void processEvent(java.awt.AWTEvent e) {
    if(e.getID() == java.awt.event.KeyEvent.KEY_TYPED) {
      ++dir;
      repaint();
    }
    super.processEvent(e);
  }
  public void paint(java.awt.Graphics g) {
    java.awt.Dimension d = getSize();
    int n = d.width * (dir & 3) / 3;
    g.drawLine(n, 0, d.width - n, d.height);
  }
}
------------
public class TestApplet2 extends java.applet.Applet {
  private int dir;
  private java.awt.event.KeyListener listener;
  public void start() {
    listener = new java.awt.event.KeyAdapter() {
      public void keyTyped(java.awt.event.KeyEvent e) {
        ++dir;
        repaint();
      }
    };
    addKeyListener(listener);
  }
  public void stop() {
    removeKeyListener(listener);
    System.out.println("stop");
  }
  public void destroy() {
    System.out.println("destroy");
  }
  public void paint(java.awt.Graphics g) {
    java.awt.Dimension d = getSize();
    int n = d.height * (dir & 3) / 3;
    g.drawLine(0, n, d.width, d.height - n);
  }
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Use deprecated method
public boolean keyDown(Event evt, int key);
(Incident Review ID: 185850)
======================================================================