purchase count

[FOX427]

Hi All!

Was implementing class that keeps track of the total number of items in a sale:
CashRegisterTwo class:

public class CashRegisterTwo {
	/**
	 * Constructs a cash register with no money in it.
	 */
	public CashRegisterTwo()
	{
		purchase = 0;
		payment = 0;
	}
	
	/**
	 * Records the purchase price of an item.
	 * @param amount the rice of the purchased item
	 */
	public void recordPurchase(double amount)
	{
		purchase = purchase + amount;
		
	}

	/**
	 * Enters the payment received from the customer.
	 * @param dollars the number of dollars in the payment
	 * @param quarters the number of quarters in the payment
	 * @param dimes the number of dimes in the payment
	 * @param nickels the number of nickels in the payment
	 * @param pennies the number of pennies in the payment
	 */
	public void enterDollars(int dollars)
	{
		payment=payment + dollars;
	}
	public void enterQuarters(int quarters)
	{
		payment=payment + quarters*QUARTER_VALUE;
	}
	public void enterDimes(int dimes)
	{
		payment= payment + dimes*DIME_VALUE;
	}
	public void enterNickels(int nickels)
	{
		payment=payment + nickels*NICKEL_VALUE;
	}
	public void enterPennies(int pennies)
	{
		payment = payment + pennies*PENNY_VALUE;
	}
	
	
	/**
	 * Computes the change due and resets the machine for the next  customer.
	 * @return the change due to the customer
	 */

	public double giveChange()
	{
		double change = payment - purchase;
		purchase = 0;
		payment = 0;
		return change;
	}
	public static final double QUARTER_VALUE = 0.25;
	public static final double DIME_VALUE = 0.1;
	public static final double NICKEL_VALUE = 0.05;
	public static final double PENNY_VALUE = 0.01;
	
	private double purchase;
	private double payment;
	
}

and CashRegisterTwoTester class:

public class CashRegisterTwoTester {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		CashRegisterTwo register= new CashRegisterTwo();
		register.recordPurchase(20.50);
		register.recordPurchase(5.34);
		register.recordPurchase(1.16);
		register.enterDollars(27);
		register.enterQuarters(2);
		System.out.println("Change: " + register.giveChange());
		System.out.println("Expected: 0.5");
		

	}

}

so right now I need to supply method "int getItemCount()" to the CashRegisterTwo class, the problem is I dont really know how to link it to the recordPurchase method as it is related(in my opinion) to it. Probably it will look similar to this:

public int getItemCount()
{
     int itemCount=(int) (purchase/purchase);
     itemCount=itemCount+1;
     return itemCount;
}

as you may have guessed it is not correct, I am missing smth here, also I need to set itemCount to 0 at the end. can you guys advice me what I should use and where? Thanks.

[DarrylBurke]

You'll need an instance field that is incremented by 1 each time you record a purchase.

db

[FOX427]

Thanks, now it works:)