REMEMBER: 

Your old Supplier.java becomes SupplierImpl.java
and then you make a NEW Supplier.java INTERFACE
product is just an example, Supplier is your application.
Supplier interface should provide the same public 
methods that it used to. Note that load/store are
helper functions inside of Supplier (now, Impl).
Do not turn in anything that looks like Product,
just do our standard Supplier. Although the test program
does not include update, that potential should
still be there. Do not give up any functionality.
I've tried to help automate this, but only on the
Linux machines, so you might want to run there (no GUI
this time). Otherwise, you have to handle RMI at home.
Java again makes this fairly easy. Read the notes about
the goals of RMI, and then convert your Supplier to
demonstrate it.