Question

Define a class called 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:

1. BookFair(): constructor to initialize data members
2. void input(): to input and store the name and price of the book
3. void calculate(): to calculate the price after discount. Discount is calculated based on the following criteria: 

Price	Discount
Less than or equal to ₹ 1000	2% of price
More than ₹ 1000 and less than or equal to ₹ 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.io.*;
class BookFair{
String Bname;
double price;
BookFair() // default constructor
{Bname = "";
price = 0.0;
}
public void input()throws IOException
{BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter the Book name");
Bname = br.readLine();
System.out.println("Enter the Book Price");
price = Integer.parseInt(br.readLine());
}
public void calculate()
{double amt = 0.0;
if (price <= 1000) price -= (price * 2) / 100;
else if (price > 1000 && price <= 3000) price -= (price * 10) / 100;
else price -= (price * 15) / 100;
}
public void display()
{System.out.println("Book name: " + Bname);
System.out.println("Discounted Book Price: " + price);
}

public static void main(String j[])throws IOException
{BookFair obj = new BookFair();
obj.input();
obj.calculate();
obj.display();
}}