The following enhancement is added to JDK 7
Area: API: DnD
Standard/Platform: JDK 7
Synopsis: Because of some security enhancements, some
operations for untrusted applications throw or print exceptions.
For instance, if during a drag and drop operation the mouse pointer
is dragged over an untrusted Java application, the applications can
retrieve the transferred data only in the drop callback method.
Another example is the clipboard implementation. In an untrusted
application, the user cannot access the system clipboard without
the java.awt.AWTPermission.accessClipboard
permission.