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Message:

Thanks but...

Posted by Anish on November 28, 2001 at 3:14 PM

I thought that when a class extends a base class it can upcast to the base class type. So WindX would be included as a type InstrumentX. Since it doesnt work without an explicit cast, does this mean that overloading does not work with inheritance?

> The problem is in the tune method defined in WindError. The tune method takes a parameter of type InstrumentX. Because there is no play method on InstrumentX that takes a NoteX, an error is thrown. An explicit cast is needed on the incoming InstrumentX object to cast it to a WindX object. Then you can call the WindX's play method.

• Overloaded Matt Gerrans November 28, 2001 at 4:09 PM (0)