SE IT OOPLab Java Program to find  copies of the books are ordered display total sale of publication
Channel: Rahul Raskar Academy
Date: 2020-10-21

Identify commonalities and differences between Publication, Book and Magazine classes. Title,
Price, Copies are common instance variables and saleCopy is common method. The differences
are, Bookclass has author and orderCopies(). Magazine Class has methods orderQty, Current issue,
receiveissue().Write a program to find how many copies of the given books are ordered and
display total sale of publication.