Making a Cash Register Program in Java:

So this is what my problem is;

REGULAR level: Complete this level correctly for a maximum score of 82%.

Use the CashRegister class to demonstrate its functionality. This means that you should write a main() method that creates at least two instances of the class, calls the class methods and prints output to show how the method works.

Take a look at the main method in 8.2 and see how we did something similar for the Counter class.

CHALLENGE level: Complete one item at this level in addition to the REGULAR level for a max score of 100%.

Read input (prices) using one of these methods:

From popup windows like you did in 6.8. <-- This one is the one i'm trying to do for the Challenge portion

From a text file.

From an array.

From an ArrayList.

I have the code below so far: My main issue is taking the input values from the dialog box and implementing them into the addItem() Method i have. I left notes on the key problems.

import java.util.ArrayList;

import java.util.Scanner;

import javax.swing.JOptionPane;

public class CashRegaster {

private int itemCount;

private double totalPrice;

public CashRegaster() {//Sub-method of the CashRegaster Class

itemCount = 0;//Counts number of prices entered by the user

totalPrice = 0;//Final value reset for later step

}

public void addItem(double price) {

itemCount ++;//Count increases by one everytime this loop is run

totalPrice = totalPrice + price;//TotalPrice reset to the next current value for user to know total cost later.

}

public double getTotal() {

return totalPrice;//Returns totalPrice for later use

}

public int getCount() {

return itemCount;//Returns itemCount for later use

}

public void clear() { //Resets main values.

itemCount = 0;

totalPrice = 0;

}

public static void main(String[] args) {

//This program runs a cash register program that totals up the cost of the items entered by the user.

CashRegaster register1 = new CashRegaster();//Call to begin the program

Scanner in = new Scanner(System.in);

ArrayList prices = new ArrayList<>();

boolean done = false;

do {//Parameter of Do Statement

String input;//Input variable is called.

input = JOptionPane.showInputDialog("Enter Item Price(click Cancel or the X): ");//Box collects info from user

if(input == null) {//Parameter of If Loop

break;//Breaks from Dialog box loop

}

//register1.addItem(input); // <-- This is where i'm having issues.

//Taking the input and plugging it into the addItem() Method.

prices.add(input);//Stores input variable for testing

}while(!done);//While Statement to satisfy Java

System.out.println(prices);//Tests to see if input is accepted by program.

System.out.println(register1.getCount());//Returns number of items in Register1

System.out.printf("%.2f ", register1.getTotal());//Returns the total cost of the items in Register1

CashRegaster register2 = new CashRegaster();//Call to begin the program

Scanner src = new Scanner(System.in);

ArrayList price = new ArrayList<>();

boolean complete = false;

do {//Parameter of Do Statement

String enter;//Input variable is called.

enter = JOptionPane.showInputDialog("Enter Item Price(click Cancel or the X): ");//Box collects info from user

if(enter == null) {//Parameter of If Loop

break;//Breaks from Dialog box loop

}

//register1.addItem(input); // <-- This is where i'm having issues.

//Taking the input and plugging it into the addItem() Method.

prices.add(enter);//Stores input variable for testing

}while(!complete);//While Statement to satisfy Java

System.out.println(prices);//Tests to see if input is accepted by program.

System.out.println(register1.getCount());//Returns number of items in Register2

System.out.printf("%.2f ", register1.getTotal());//Returns the total cost of the items in Register2

}

}