Question

Define a class named BookFair with the following description: 
Instance variables/Data members :

String Bname — stores the name of the book
double price — stores the price of the book Member methods :
(i) BookFair() — Default constructor to initialize data members
(ii) void Input() — To input and store the name and the price of the book.
(iii) void calculate() — To calculate the price after discount. Discount is calculated based on the following criteria.

Price	Discount
Less than or equal to Rs. 1000	2% of price
More than Rs. 1000 and less than or equal to Rs. 3000	10% of price
More than % 3000	15% of price

(iv) void display() — To display the name and price of the book after discount. Write a main method to create an object of the class and call the above member methods.

Answer 1

import java.util.Scanner;
class BookFair
{
      String Bname
      double price;
      BookFair()
      {

         Bname = " ";
         Price = 0;
}
void input()
{
    Scanner S = new Scanner (System.in);
     System.out.println ("Enter Book name");
     Bname = S.nextLine();
     System.out.println("Enter Price");
     price = S.nextDouble();

}
Void calculate ()
{
          double d;
          if (price < = 1000)
              d = 2.0/100*price;
         else if (price < = 3000)
              d = 10.0/100 * price;
else
           d = 15.0/100*price;
price = price - d;
}
void display ()
{
      System.out.println ("Book name" + Bname);
      System.out.println ("Price" + price);
}
public static void main ()
{
      BookFair b = new BookFair ();
b. input ();
b.calculate ();
b. display ();
}
}