JDK-7032695 : NPE when close dragged-out applet with system close window icon [X].
  • Type: Bug
  • Component: deploy
  • Sub-Component: plugin
  • Affected Version: 7
  • Priority: P3
  • Status: Closed
  • Resolution: Fixed
  • OS: windows
  • CPU: generic
  • Submitted: 2011-03-31
  • Updated: 2011-05-17
  • Resolved: 2011-05-17
The Version table provides details related to the release that this issue/RFE will be addressed.

Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.

To download the current JDK release, click here.
JDK 7
7 b138Fixed
Related Reports
Relates :  
JDK-7036163 - AccessControlException is thrown when trying to drag an applet out of browser
Description
Following NPE can be thrown when close the dragged-out applet quickly with the system close window button. By the time trying to calculate close button position, the frame window has gone.

Way to reproduce,
1. Try following applet, http://rehte.cn.oracle.com:8080/wshost/new_ws/deployment/src/plugin/Decoration/Decoration/html/DecorationTrueJnlp.html
2. Drag out the applet, and close it immediately with the red X close window icon on the frame window.
3. If see the NPE, the bug is reproduced.
4. After the NPE, no AWT events will be dispatched, thus hangs the applet.

Exception in thread "AWT-EventQueue-1" java.lang.NullPointerException
	at com.sun.deploy.uitoolkit.impl.awt.AWTDragHelper$PerAppletInfo.refreshCloseButtonFrame(AWTDragHelper.java:467)
	at com.sun.deploy.uitoolkit.impl.awt.AWTDragHelper$PerAppletInfo.setupCloseListener(AWTDragHelper.java:393)
	at com.sun.deploy.uitoolkit.impl.awt.AWTDragHelper$PerAppletInfo.dispatchEventImpl(AWTDragHelper.java:657)
	at com.sun.deploy.uitoolkit.impl.awt.AWTDragHelper$PerAppletInfo.dispatchEvent(AWTDragHelper.java:310)
	at com.sun.deploy.uitoolkit.impl.awt.AWTDragHelper.dispatchEvent(AWTDragHelper.java:182)
	at com.sun.deploy.uitoolkit.impl.awt.AWTDragHelper.access$500(AWTDragHelper.java:55)
	at com.sun.deploy.uitoolkit.impl.awt.AWTDragHelper$1$1.eventDispatched(AWTDragHelper.java:161)
	at java.awt.Toolkit$SelectiveAWTEventListener.eventDispatched(Unknown Source)
	at java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Unknown Source)
	at java.awt.Toolkit.notifyAWTEventListeners(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.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(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)
Comments
EVALUATION Fixing the following problems: - NPE in AWTDragHelper. - java.security.AccessControlException while setting the LAP from JNLP2Manager. Added doPrivileged block in Cache.getLastAccessed.
04-04-2011