lokal variabler

Hejsa.

Jeg sidder og bøvler lidt med et spørgsmål:

"Add a new method, emptyMachine, that is designed to simulate emptying the machine of money. It should both return the value in total and reset the total to be zero"

Her er hele min kode som virker som den skal:

public class TicketMachine
{
    // The price of a ticket from this machine.
    private int price;
    // The amount of money entered by a customer so far.
    private int balance;
    // The total amount of money collected by this machine.
    private int total;

    /**
    * Create a machine that issues tickets of the given price.
    */
    public TicketMachine(int ticketCost)
    {
        price = ticketCost;
        balance = 0;
        total = 0;
    }

    /**
    * @Return The price of a ticket.
    */
    public int getPrice()
    {
        return price;
    }

    /**
    * Return The amount of money already inserted for the
    * next ticket.
    */
    public int getBalance()
    {
        return balance;
    }

    /**
    * Receive an amount of money in cents from a customer.
    * Check that the amount is sensible.
    */
    public void insertMoney(int amount)
    {
        if(amount > 0) {
            balance = balance + amount;
        }
        else {
            System.out.println("Use a positive amount: " +
                              amount);
        }
    }

    /**
    * Print a ticket if enough money has been inserted, and
    * reduce the current balance by the ticket price. Print
    * an error message if more money is required.
    */
    public void printTicket()
    {
        if(balance >= price) {
            // Simulate the printing of a ticket.
            System.out.println("##################");
            System.out.println("# The BlueJ Line");
            System.out.println("# Ticket");
            System.out.println("# " + price + " cents.");
            System.out.println("##################");
            System.out.println();

            // Update the total collected with the price.
            total = total + price;
            // Reduce the balance by the prince.
            balance = balance - price;
        }
        else {
            System.out.println("You must insert at least: " +
                              (price - balance) + " more cents.");
                   
        }
    }

    /**
    * Return the money in the balance.
    * The balance is cleared.
    */
    public int refundBalance()
    {
        int amountToRefund;
        amountToRefund = balance;
        balance = 0;
        return amountToRefund;
    }


Nu kommer så hvor jeg skal lave spørgsmålet. Oprindeligt havde jeg skrevet:

public int emptyMachine()
    {
        return total;
        total = 0;
    }

men det virker ikke.
Kan i evt hjælpe mig?

Mvh Mads