import java.text.DecimalFormat;/** * This is a template class for Book. * It defines a Book class used for the storage of Book Information * *//** * @author Brent Garber * */public class Book { // instance variables private String _title; private double _price; private int _quantity; private DecimalFormat df1 = new DecimalFormat("##,###.00"); // Default Constructor /** * Constructs a default Book object */ public Book() { this._title = ""; this._price = 0.00; this._quantity = 0; } /** * Constructs a Book object with given instance attributes * @param title Title of the Book * @param price Price of the Book * @param quantity Number of Books in inventory */ public Book(String title, double price, int quantity) { this._title = title; this._price = price; this._quantity = quantity; } /** * Sets the Book's Title * @param title */ public void setTitle(String title) { this._title = title; } /** * Returns the title of the book * @return String Name of Book */ public String getTitle() { return this._title; } /** * Sets the Book's Price * @param price */ public void setPrice(double price) { this._price = price; } /** * Returns the Book's Price * @return double Price of Book */ public double getPrice() { return this._price; } /** * Sets the number of this type of Book in the inventory * @param quantity */ public void setQuantity(int quantity) { this._quantity = quantity; } /** * Returns the current inventory of the book * @return int Number of books in the inventory */ public int getQuantity() { return this._quantity; } /** * Returns the Total Cost of the book * @param number Number of Books to Buy * @param taxRate Tax rate to apply to purchase * @return double Total Cost of the Books */ public double getTotalCost(int number, double taxRate) { return number * (this.getPrice() * (1.0 + (taxRate / 100)) ); } /** * Returns a rendering of the Book object * @return String version of object */ public String toString() { return "The Book: " + super.toString() + " " + this.getTitle() + " $" + df1.format(this.getPrice()) + " " + this.getQuantity(); }}