Answer to Question #316619 in Java | JSP | JSF for denz

Question

Construct a simple purchasing program based on the Requirement Below.

Main.java should only contain the main method and a Reference of Purchase Object. Purchase.java should contain this fields & Methods:

Fields/Instance Variables

-itemName : String

-itemPrice : double

-itemQuantity : int

-amountDue :double

Methods

setItemName(String itemName) : void

setTotalCost(int quantity, double price) : void

getItemName(): String

getTotalCost(): double

readInput():void

writeOutput(): void

•

Note: The readinput() method will be used to accept user input through the Scanner class.

Simple output :

Enter the name of the Item you are Purchasing: Bag

Enter QTY and Price Separated by a space: 3 499.75

You are Purchasing 3 Bag(s) at 499.75 each.

Amount due is 1,499.25

Answer 1

import java.util.Scanner;

public class Purchase {
    private String itemName;
    private double itemPrice;
    private int itemQuantity;
    private double amountDue;

    public void setItemName(String itemName){
        this.itemName = itemName;
    }
    public void setTotalCost(int quantity, double price){
        this.itemQuantity = quantity;
        this.itemPrice = price;
        this.amountDue = quantity * price;
    }
    public String getItemName(){
        return this.itemName;
    }
    public double getTotalCost(){
        return this.amountDue;
    }
    public void readInput(){
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter the name of the Item you are Purchasing: ");
        setItemName(scanner.nextLine());
        System.out.print("Enter QTY and Price Separated by a space: ");
        setTotalCost(scanner.nextInt(),scanner.nextDouble());
    }
    public void writeOutput(){
        System.out.println("You are Purchasing " + this.itemQuantity + " " + getItemName() + "(s) at " + this.itemPrice + " each.");
        System.out.println("Amount due is " + getTotalCost());
    }

}
public class Main {
    public static void main(String args[]){
        Purchase purchase = new Purchase();
        purchase.readInput();
        purchase.writeOutput();
    }
}