I'm pretty ignorant about this myself.
I tried your suggestion and it doesn't compile:
Error(202): method checkAttempt(edu.msu.lite.JHomework.Attempt, int) not
found in class java.lang.Object
John Brecht
Department of Physics and Astronomy
Michigan State University
[EMAIL PROTECTED]
> > theSolver = (Solver)(theInstance);
>
> Forgive my ignorance but why are you doing an explicit upcast?
> I thought that sort of thing wasn't necessary in Java.
> Why can't you make a direct call:
>
> theInstance.checkAttempt();
>
> ?
>
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