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From "Roger Whitcomb (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (PIVOT-927) Unexpected NPE
Date Tue, 29 Oct 2013 20:41:26 GMT

     [ https://issues.apache.org/jira/browse/PIVOT-927?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Roger Whitcomb reassigned PIVOT-927:
------------------------------------

    Assignee: Roger Whitcomb

> Unexpected NPE
> --------------
>
>                 Key: PIVOT-927
>                 URL: https://issues.apache.org/jira/browse/PIVOT-927
>             Project: Pivot
>          Issue Type: Question
>    Affects Versions: 2.0.3
>            Reporter: Ɓukasz Hanusiak
>            Assignee: Roger Whitcomb
>             Fix For: 2.0.4, 2.1
>
>
> After upgrading to pivot 2.0.3 my application randomly becomes unresponsive after throwing
NPE with following trace:
>  java.lang.NullPointerException
>      at org.apache.pivot.wtk.ApplicationContext$DisplayHost.processMouseMotionEvent(ApplicationContext.java:1132)

>      at java.awt.Component.processEvent(Unknown Source)
>      at org.apache.pivot.wtk.ApplicationContext$DisplayHost.processEvent(ApplicationContext.java:793)

>      at java.awt.Component.dispatchEventImpl(Unknown Source)
>      at java.awt.Component.dispatchEvent(Unknown Source)
>      at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
>      at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
>      at java.awt.LightweightDispatcher.dispatchEvent(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.dispatchEventImpl(Unknown Source)
>      at java.awt.EventQueue.access$400(Unknown Source)
>      at java.awt.EventQueue$2.run(Unknown Source)
>      at java.awt.EventQueue$2.run(Unknown Source)
>      at java.security.AccessController.doPrivileged(Native Method)
>      at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
>      at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
>      at java.awt.EventQueue$3.run(Unknown Source)
>      at java.awt.EventQueue$3.run(Unknown Source)
>      at java.security.AccessController.doPrivileged(Native Method)
>      at java.security.AccessControlContext$1.doIntersectionPrivilege(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)
> After mentioned exception occurs user is unable to use any element of UI. Only application
restart helps solve this problem. Even more confusing is fact that problem sometimes occurs
after few minutes and sometimes after few hours or even days. 
> Can anybody give me some pointers how to workaround / fix this situation?



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