/** * TicketMachine models a naive ticket machine that issues * flat-fare tickets. * The price of a ticket is specified via the constructor. * It is a naive machine in the sense that it trusts its users * to insert enough money before trying to print a ticket. * It also assumes that users enter sensible amounts. * * @author David J. Barnes and Michael Kolling * @version 2008.03.30 */ 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; //Exercise 2.15 private int status; /** * Create a machine that issues tickets of the given price. * Note that the price must be greater than zero, and there * are no checks to ensure this. */ public TicketMachine() { price = 1000; balance = 0; total = 0; } public TicketMachine(int ticketPrice){ price = ticketPrice; 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 getAmount() { return balance; } /** * Returns the total amount of money inserted into the machine. */ public int getTotal(){ return total; } /** * Sets the price of the ticket. */ public void setPrice(int ticketCost){ price = ticketCost; } /** * Receive an amount of money in cents from a customer. */ public void insertMoney(int amount) { balance = balance + amount; } /** * Reduces the price of the ticket. */ public void discount(int amount){ price = price - amount; } /** * Removes all money from the machine. */ public void empty(){ total = 0; } /** * Prompts the user to enter money. */ public void prompt(){ System.out.println("Please insert the correct amount of money."); } /** * */ public void showPrice(){ System.out.println("The price of a ticket is " + price); } /** * Print a ticket. * Update the total collected and * reduce the balance to zero. */ public void printTicket() { // 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 balance. total = total + balance; // Clear the balance. balance = 0; } }