How to resolve "java.lang.reflect.InvocationTargetException"

[rach18]

I'm using Java Plug-in 1.6.0_20.

When I run my application, i'm getting the following error: What might be the issue? What needs to be taken care in this case?

java.lang.reflect.InvocationTargetException
at com.sun.deploy.util.DeployAWTUtil.invokeAndWait(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.runOnEDT(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at sun.awt.windows.WEmbeddedFrame.synthesizeWindowActivation(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.setDefaultFocus(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.access$1600(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable$3.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(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)
Exception: java.lang.reflect.InvocationTargetException

 

[Diancecht]

With that info, I find very difficult to say what's going on. When are you getting this error? Do you have access to the source code? Do you use any IDE to develop it?

Cheers,
Dian

 

[rach18]

I was able to get the cause of the exception thrown.

In one scenario, the application was trying to dispose the Frame before it was initialized. That caused the above exception.

Thanks anyhow Dian for your reply.