Help With My Library Program please.

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How Do i add author, publisher and book id here?

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Before creating an instance of a Book object, the code needs to read in all the data from the user that is needed to create the Book object. When all the data is available, call the Book class's constructor and pass it all the data.

i finally did it ! thank god ! and thank you ! you really helped me a lot thanks ! \:D/\:D/\:D/

but somehow some of my code cant catch exceptions...