CSE javafx

package application; import java.text.DecimalFormat; public class Order { private String productName; private int quantity; private double unitPrice, totalCost; //Constructor. It initializes all instance variables to their default values. public Order() { productName = new String("?"); quantity = 0; unitPrice = 0.0; totalCost = 0.0; } //Overloaded constructor, used to initialize all instance varibles public Order(String name, int qty, double price) { productName = name; quantity = qty; this.unitPrice = price; totalCost = quantity * unitPrice; } //Accessor method of the instance variable productName public String getProductName() { return productName; } //Accessor method of the instance variable quantity public int getQuantity() { return quantity; } //Accessor method of the instance variable unitPrice public double getUnitPrice() { return unitPrice; } //Accessor method of the instance variable totalCost public double getTotalCost() { return totalCost; } //Mutator method of the instance variable productName public void setProductName(String name) { productName = name; } //Mutator method of the instance variable quantity public void setModel(int qty) { quantity = qty; } //Mutator method of the instance variable unitPrice public void setUnitPrice(double price) { unitPrice = price; } //Mutator method of the instance variable totalCost //Note: totalCost will be computed and set by quantity*unitPrice public void setTotalCost() { totalCost = getQuantity() * getUnitPrice(); } //toString method creates a string containing values of //instance variables using the specified format and returns it public String toString() { DecimalFormat fmt1 = new DecimalFormat("$0.00"); String result = "Name:\t\t" + productName + "\nQuantity:\t\t" + quantity + "\nPrice:\t\t" + fmt1.format(unitPrice) + "\nTotal Cost:\t" + fmt1.format(totalCost) + "\n\n"; return result; } } //end of the Order class