PBO A-Tugas 3 : Ticket Machine

Nama; Muhammad Naufal Refadi
NRP: 05111740000097
Kelas: PBO-A

Ini adalah tugas saya pada pertemuan minggu ke-4 dengan membuat Ticket Machine dengan menggunakan class Java/bahasa java.

Berikut formatted souce code saya:
A)Class Main

 import java.util.Scanner;   
  public class Main   
  {   
   public static void main(String args[])   
   {   
    Scanner scan= new Scanner(System.in);   
    int cost,option;   
    cost = 50;   
    System.out.println("Masukkan harga tiket \n");   
    cost=scan.nextInt();   
    TicketMachine ticket=new TicketMachine(cost);   
    while (true)   
    {  
    System.out.println("Menu Option:");    
    System.out.println("1.Get Price");   
    System.out.println("2. Get Balance");   
    System.out.println("3. Insert Money");   
    System.out.println("4. Print Ticket");  
    option=scan.nextInt();   
    if(option==1){   
    cost=ticket.getPrice();   
    System.out.println(cost);   
    }  
    if(option==2){   
     ticket.getBalance();   
    }   
    if(option==3){   
     int money=scan.nextInt();   
     ticket.insertMoney(money);    
    }   
    if(option==4){   
     ticket.printTicket();    
    }   
   }   
  }   
  }   

B) Class TicketMachine

  /**   
  * Ticket Machine   
  * @Author Muhammad Naufal Refadi   
  * @version date 17-09-2018   
  */    
  public class TicketMachine   
  {   
   //The price of a ticket ftr=rom this machin   
   private int price;   
   private int balance;   
   private int total;  
   private int refund;  
   public TicketMachine(int ticketCost)   
   {   
    price = ticketCost;   
    balance = 0;   
    total = 0;   
   }   
   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("Masukkan Uang dengan nilai yang benar");  
   }        
   }  
   public void printTicket()   
   {   
    if(balance >= price){    
    System.out.println("##################");   
    System.out.println("# The BlueJ Line");   
    System.out.println("# Ticket");   
    System.out.println("# "+price+" cents.");   
    System.out.println("##################");   
    System.out.println();   
    total=total+balance;   
    balance=0;  
   }  
   else{  
    System.out.println("Uang anda belum cukup, silahkan masukkan minimal"+(price-balance)+ " more cents");  
   }  
   }   
 }   

Dan ini adalah bagan classnya dan screenshot hasil compilenya