UI

public class UI
{
    private int transactionNum;

    public UI()
    {
        transactionNum = 1;
    }

    public void disp(String message)
    {
        System.out.print(message);
    }

    public void displn(String message)
    {
        System.out.println(message);
    }

    public void dispmoney(int amount)
    {
        System.out.print("Rp " + amount);
    }

    public void printticket()
    {
        System.out.println("#########################");
        System.out.println("# Tol Surabaya-Gempol 1 #");
        System.out.println("#          Gol.1        #");
        System.out.println("#      Tiket Nomor:     #");
        System.out.print("#");
        for(int i = 0; i < 11-digitCount(transactionNum); i++)
        {
            System.out.print(" ");
        }
        System.out.print(transactionNum);

        for(int i = 0; i < 11-digitCount(transactionNum); i++)
        {
            System.out.print(" ");
        }
        System.out.println("#");
        System.out.println("#                       #");
        System.out.println("#########################");
        transactionNum++;
    }

    private int digitCount(int amount)
    {
        for(int i = 1; ; i++)
        {
            int a = 1, b = i;
            while(b-- > 0)
                a = a*10;
            if(amount/a < 10)
                return i-1;
        }
    }
}