Skeleton files have not been needed since JDK 1.2. You can still force them to be created if you want to (look at the help for rmic) but there is no value for the
SCJD assignment, and it is rarely of value at other times.
Stubs do not need to be explicitly created for JDK 1.5, however you still need to explicitly create them in order to comply with the SCJD assignment instructions.
Regards, Andrew