Are you actually implying with the above example code that you can call a undefined "super" constructor on an interface and pass it the "balance" variable, which the interface's non-existent constructor would presumably match by name?
Nope. I probably should have used a different example for the interface. The examples are from the full spec where they progress a little more gradually from a BankAccount interface to a BankAccount class to a CheckingAccount subclass.
