Tugas 3 - Ticket Machine

1. Program untuk class ticket machine

public class TicketMachine{
    private int price;      //harga tiket
    private int balance;    //uang yang dimasukkan saat transaksi oleh 1 orang
    private int total;      //uang ada yang ada dlm machine
    private int tickets;    //tiket yang dibeli dlm 1 transaksi
    
    public TicketMachine(){
        price = 500;
        balance = 0;
        total = 0;
        tickets = 0;
    }
    
    public TicketMachine(int cost){
        price = cost;
        balance = 0;
        total = 0;
        tickets = 0;
    }
    
    public int getPrice(){
        return price;
    }
    
    public int getBalance(){
        return balance;
    }
    
    public int getTotal(){
        return total;
    }
    
    public void insertMoney(int amount){
        balance = balance + amount;
    }
    
    public void buyTicket(){
        if(price>balance){
            System.out.println("Not enough balance entered to buy ticket. Please add more.");
        }
        else{
            while(balance>price){
                balance -= price;
                total += price;
                tickets++;
            }
        }
    }
    
    public void printTicket(){
        if(tickets == 0){
            System.out.println("You haven't bought any tickets");
        }
        else{
            System.out.println("You bought " + tickets + " of these:");
            System.out.println("+------------------------+");
            System.out.println("| The BlueJ Line Ticket.");
            System.out.println("| " + price + " cents.");
            System.out.println("+------------------------+");
        }
    }
    
    public void endTransaction(){
        System.out.println("Thank you for your purchase!");
        System.out.println("Your change is " + balance + " cents");
        balance = 0;
        tickets = 0;
    }
}

2. Program untuk eksekusi

import java.util.Scanner;

public class ticketMachine1{
    public static void main(String args[]){
        Scanner scan = new Scanner(System.in);
        int cost,menu;
        System.out.println("Masukkan harga tiket");
        cost = scan.nextInt();
        TicketMachine mesin = new TicketMachine(cost);
        boolean exit = false;
        while(exit == false){
            System.out.println("Price   : " + mesin.getPrice());
            System.out.println("Balance : " + mesin.getBalance());
            System.out.println("--=Instructions=--");
            System.out.println("1. Insert Money");
            System.out.println("2. Buy Ticket");
            System.out.println("3. Print Ticket");
            System.out.println("4. End Transaction");
            System.out.println("5. Exit");
            menu = scan.nextInt();
            switch(menu){
                case 1:
                    System.out.println("Insert Amount:");
                    int money = scan.nextInt();
                    mesin.insertMoney(money);
                    break;
                case 2:
                    mesin.buyTicket();
                    break;
                case 3:
                    mesin.printTicket();
                    break;
                case 4:
                    mesin.endTransaction();
                    break;
                case 5:
                    exit = true;
                    break;
                default:
                    System.out.println("Instruction Unknown");
                    break;
            }
            if(exit==true){
                System.out.println("You have collected "+mesin.getTotal()+" cents from this machine");
            }
        }
    }
}