Given the following class Based on class Books and the following table, define two subclasses named as OrderBook and UsedBook, OrderBook UsedBook Additional attribute weight Quantity Price calculation rate*weight rate*quantity help with this question
Given the following class Based on class Books and the following table, define two subclasses named as OrderBook and UsedBook, OrderBook UsedBook Additional attribute weight Quantity Price calculation rate*weight rate*quantity help with this question
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
- Given the following class
- Based on class Books and the following table, define two subclasses named as OrderBook and UsedBook,
|
|
OrderBook |
UsedBook |
|
Additional attribute |
weight |
Quantity |
|
Price calculation |
rate*weight |
rate*quantity |
help with this question
Transcribed Image Text:public abstract class Books
{
protected String name;
protected double rate;
public Books (String n, double r)
{
name = n;
rate = r;
}
public abstract double calcPrice();
public String toString()
{
return name + "\t" + rate;
a) Based on class Books and the following table, define two subclasses named as
OrderBook and UsedBook,
www
OrderBook
Used Book
Additional attribute
weight
Quantity
Price calculation
rate *weight
rate* quantity
b) By using classes definition from, write an application program that will:
i) declare an array of 20 book objects;
ii) input data for book objects and store them into the array;
iii) display the total price for all types of books
iv) display the total price and the quantity sold for used books
v) display the information for the Book that has been sold for the highest price.
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