TicketMachine.java

import java.util.Scanner;

public class TicketMachine
{
    private int price;
    private int balance;
    private int total;
    public TicketMachine(int cost)
    {
        price = cost;
        balance = 0;
        total = 0;
    }
    /**
     * @Return The price of a ticket.
     */
    public int getPrice()
    {
        return price;
    }
    public int getBalance()
    {
        return balance;
    }
    public void insertMoney(int amount)
    {
        if(amount > 0) {
            balance = balance + amount;
        }
        else {
            System.out.println("Use a positive amount rather than: " +
                               amount);
        }
    }
    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.");

        }
    }

    public int refundBalance()
    {
        int amountToRefund;
        amountToRefund = balance;
        balance = 0;
        return amountToRefund;
    }

    public static void main(String args[]){
        Scanner scan= new Scanner(System.in);
        int cost, menu;
        boolean entry;

        System.out.println("Masukkan harga tiket \n");
        cost = scan.nextInt();

        TicketMachine ticket = new TicketMachine(cost);
        entry = true;

        while(entry) {
            System.out.println("1. Get Price");
            System.out.println("2. Get Balance");
            System.out.println("3. Insert Money");
            System.out.println("4. Print Ticket");
            System.out.println("5. Exit");

            menu=scan.nextInt();
            switch(menu){
                case 1:
                    cost=ticket.getPrice();
                    System.out.println(cost);
                    break;
                case 2:
                    ticket.getBalance();
                    break;
                case 3:
                    int money=scan.nextInt();
                    ticket.insertMoney(money);
                    break;
                case 4:
                    ticket.printTicket();
                    break;
                case 5:
                    entry = false;
                    break;
            }
        }
    }
}