Name: gm110360 Date: 05/30/2002


FULL PRODUCT VERSION :
java version "1.4.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-b92)
Java HotSpot(TM) Client VM (build 1.4.0-b92, mixed mode)

FULL OPERATING SYSTEM VERSION :
Windows NT Version 4.0

A DESCRIPTION OF THE PROBLEM :
A JEditorPane which is displaying an HTML page with
frames will sometimes throw a NullPointerException
when the mouse is moved in the bottom border.

You can also see another bug - script code is
displayed.


REGRESSION. Last worked in version 1.3.1

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Change the url in my source to a local copy of the JDK
1.4 docs "api/index.html" file.
2. Run the code.
3. Move the mouse in the bottom border of the page.
Sometimes nothing happens on a particular run.

EXPECTED VERSUS ACTUAL BEHAVIOR :
Expect no stack dump. Get stack dump.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
java.lang.NullPointerException
at
javax.swing.text.html.HTMLEditorKit$LinkController.doesElementContainLocation(HT
MLEditorKit.java:733)
at
javax.swing.text.html.HTMLEditorKit$LinkController.mouseMoved(HTMLEditorKit.java
:631)
at java.awt.AWTEventMulticaster.mouseMoved(AWTEventMulticaster.java:268)
at java.awt.Component.processMouseMotionEvent(Component.java:5066)
at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:2763)
at java.awt.Component.processEvent(Component.java:4822)
at java.awt.Container.processEvent(Container.java:1380)
at java.awt.Component.dispatchEventImpl(Component.java:3526)
at java.awt.Container.dispatchEventImpl(Container.java:1437)
at java.awt.Component.dispatchEvent(Component.java:3367)
at
java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3214)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:2942)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2859)
at java.awt.Container.dispatchEventImpl(Container.java:1423)
at java.awt.Window.dispatchEventImpl(Window.java:1566)
at java.awt.Component.dispatchEvent(Component.java:3367)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:445)
at
java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:1
90)
at
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:144
)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:130)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:98)


This bug can be reproduced often.

---------- BEGIN SOURCE ----------
import javax.swing.*;

    public class JEditorPaneBug {
       public static void main(String args[]) {
         JFrame frame = new JFrame();
         JEditorPane jep = new JEditorPane();
         jep.setEditable(false);
         frame.getContentPane().add(jep);
         frame.setSize(400, 400);
         frame.setVisible(true);
      
         try {
            // Change page to local copy of JDK 1.4
            // docs "api/index.html" file.
            jep.setPage("file:D:/docs/api/index.html"); }
             catch(java.io.IOException e) {
               System.out.println("Page not found."); }
      }
   }


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

Release Regression From : 1.3.1_03
The above release value was the last known release where this
bug was known to work. Since then there has been a regression.

(Review ID: 139872)
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