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Greenhorn
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I found I think my problem but not sure how to fix it, I was naming as shapes and not what was asked in the bold, could someone give me an example or where to go and look, the book I have is not a good teacher,

Thank you in advance.


 
author and iconoclast
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Mike --

PLEASE stop starting new threads for this same exercise! Except for people that have talked to you already, nobody understands where you're coming from. If you left this all in one thread, then people would be able to see the context.

Now, anyway: the problem as I understood it was that Circle, Sphere, etc, need to extend Shape (if Shape is a class) or implement Shape (if Shape is an interface.) In other words:

public class Circle extends Shape { ...
 
mike hew
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no, circle extends twodimensionshape, which extends to shape under the program
 
mike hew
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As you can see, Circle DOESNOT extend to shape, and isnot suppose too!









 
Rancher
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If Circle extends TwoDimensionalShape and TwoDimensionalShape extends Shape, then Circle also extends Shape
i.e.

is perfectly legal.
Without digging out your original post, I'm not sure if that is what your problem is, but maybe it will help.
 
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