sun.print.PrintJob2D.finalize() calls end()
sun.print.PrintJob2D extends java.awt.PrintJob
 java.awt.PrintJob.finalize() also calls end()

So I don't see why sun.print.PrintJob2D needs to over-ride the superclass method.

It can't be over-ridden to be empty because end() still needs to be called until such time as we have a solution for PrintJob.
And whilst removing finalize() on the API class instead is possible from a practical point of view since PrintJob2D is the only concrete class, it would need a spec. update and similarly doesn't actually remove the need for finalization.