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Java Media Framework: surviving laptop hibernation

 
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I am trying to adapt this image capture demo: http://www.comp.rgu.ac.uk/staff/fh/CM4062/mis/jmf/FrameGrab.html
All works well until I hibernate or standby. I come out of hibernation with built-in webcam turned off, only JMF does not know about it.

How can I adapt this code to check whether the cam is on or off? and if it's off, how do I turn it back on without causing the "device already in use" exception?

Here is the code from the link:

 
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