Describe the class design guidelines.

How can class fields be protected against unintended alteration is the question.

C- Create the sub class UsedBook  that is derived from the super class Book and has the following instance variables, constructor, and functions: title ( String) isbn ( String) authors (String) publisher (String) edition ( int) published_year (int) price_new (double) // the price of the book if it is new age (int)  // how old the book is in years Constructor that takes all of the above variables as input parameters.  set/get functions calculate_price method // the price is calculated as  price_new * (1- 0.10*age) print function that prints all information related to the old book.   D- Create the Testing class that has the main method and does the following: aa- Use the constructor to create instance of NewBook class and name it as new. Call compute_price function. bb- Use the constructor to create instance of  usedBook class and name it used. Call compute_price function. cc- Print the related information of new and used objects using print functions. Use this following code:   class…

A design class must be fully specified:   Which is correct? A.  all attributes must be complete B.  all operations must be complete C.  all attributes and operations (including return types and parameter lists) D. must be complete D.  None of these

Describe how to construct the header file of a derived class.

6 Java

The approach to analysis modelling in which we focus on class definitions and class relationships is structured analysis object-oriented analysis top down functional design none of the above