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Well, for the compiler, "superClass" has no method "smile(..)" because "smile(..)" in SuperClass was defined to be protected and we are in a different package than SuperClass is in, and we are not in a class inheriting from SuperClass. So, the compiler doesn't "see" "smile(..)".
 
The moth suit and wings road is much more exciting than taxes. Or this tiny ad:
a bit of art, as a gift, that will fit in a stocking
https://gardener-gift.com
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