BookStoreApp

import java.util.Scanner;

public class BookStoreApp {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        // TODO Auto-generated method stub
        int option;
        BookStore book= new BookStore;
        while(true)
        {
            System.out.println("Enter 1 to display. 2 to order. 3 to sell 0 to exit");
            option=sc.nextInt();
            if(option==1)
            {
                book.display();
            }
            if
        }

    }

}