java me - use volume key in app -

How do I use the volume key and camera key in the app? I-36 and -37 use stable value but this does not work !!! I use it to get the key name

  str = getKeyName (keycode);  

But when I press the volume keys or the key of the camera, then this can be due to the return, any body thanks me

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On which platform? What kind of keyboard do you have? This is an implementation-specific question; There is no standardized keycode for the volume key because it is not a standard 101- or 104-key part of the layout. (And yet, the coded is different between countries and languages.)