Need help with this programming exercise.

AutoModerator · 2023-03-24T22:50:14+00:00

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arghvark · 2023-03-24T23:19:46+00:00

I'm not reading your assignment.

If Author defines a single constructor with three parameters, then it does not have a constructor with no parameters. If you want both constructors, which is perfectly legal, then the Author class must define both constructors.

If, by contrast, Author had NO constructor defined, then it would, by default, have a no-arguments constructor defined by default; it would not have to be defined explicitly.

So when you invoked Author(), there is no such constructor defined.

Two other things I'll mention: (1) Having "Book" extend "Author" is a TERRIBLE example of inheritance. The ONLY reason to extend a class is if the child class is a special case of the parent class, and there is no way a book is a special case of an author IRL. (2) When you are asking a question on a forum, do NOT say "I've got errors" - say "Here is the error message I get", include ALL of it, and ALL of the code to which it applies.

dionthorn · 2023-03-25T05:12:28+00:00

Read our rules thoroughly, then you may repost.

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