InvoiceList.java

import java.util.*;

public class InvoiceList {
	
	private List<Invoice> invoices = new LinkedList<Invoice>();
	
	public int size() {
		return invoices.size();
	}
	
	public Iterator<Invoice> getInvoices() {
        return invoices.iterator();
    }
	
	
	public void AddInvoice(cart userCart, int total, Client item3)
	{
		Invoice newInvoice = new Invoice(userCart,total);
		invoices.add(newInvoice);
		userCart.emptyCart(item3);
	}
	
	 public int IDcheck (int ID) {
	        for (int i=0; i < invoices.size(); i++) {
	            Invoice temp = invoices.get(i);
	            if (ID == temp.getId()) {
	                System.out.println("ID found");
	                return i;
	            }
	        }
	        System.out.println("ERROR: ID is not in database");
	        return -1;
	    }
		public Invoice get_listed_obj (int position) {
	        return invoices.get(position);
	    }
	    public void set_listed_obj (int position, Invoice update) {
	        invoices.set(position, update);
	    }
	
	
}