A DragGestureEvent is passed to DragGestureListener's dragGestureRecognized() method when a particular DragGestureRecognizer detects that a platform dependent drag initiating gesture has occurred on the Component that it is tracking. The action field of any DragGestureEvent instance should take one of the following values:

DnDConstants.ACTION_COPY
DnDConstants.ACTION_MOVE
DnDConstants.ACTION_LINK

Assigning the value different from listed above will cause an unspecified behavior.

extends EventObject