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Thread: Calculation error...very New to Java..please be kind.

  1. #1
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    Default Calculation error...very New to Java..please be kind.

    Hello, I am doing the famous Parking ticket simulator. I have the whole thing compiling and it works! however, I am out on my calculations. My vehicle is parked for 125 mins, and I paid for 60 minutes. I am being fined for 65 minutes of illegal parking.

    The first hour is $25 base fine, and after 120 minutes, $10 should be added. I have something wrong here, as when I run the code, it is adding $25 for the base rate, $20 for time parked. It is either looking at the total time parked as illegal, and charging me as such, or it is charging me $35 (25 for base fine + hourly fine)for the first hour of illegal parking, and $10 for the part hour...Please help, as I have gone through this again and again.

    Here is the code: (just the class that has the calculations, I can put the whole thing up, but it is quite large.)


    import java.text.DecimalFormat;
     
    public class ParkingTicket
    {
        private ParkedCar car;
        private PoliceOfficer officer;
        private double fine;
        private int minutes;
        final double BASE_FINE = 25.0;
        final double HOURLY_FINE = 10.0;
     
        public ParkingTicket(ParkedCar car, PoliceOfficer officer, int minutes) 
        {
            this.car = car;
            this.officer = officer;
            this.minutes = minutes;
        }
     
        public ParkingTicket(ParkingTicket ticket2)
        {
            car = ticket2.car;
            officer = ticket2.officer;
            fine = ticket2.fine;
            minutes = ticket2.minutes;
        }
     
        public void calculateFine()
        {
            if(car.getMinutesParked() >= 60)
            {
                if(car.getMinutesParked() - ParkingMeter.getMinutesPurchased() <= 60)
                {   fine = BASE_FINE;
                }
                else
                {
                    fine = BASE_FINE + (HOURLY_FINE * ((car.getMinutesParked() - ParkingMeter.getMinutesPurchased()) /60));
                }
            }
        }
     
        DecimalFormat decimalformat = new DecimalFormat("#0.00");
     
        public double getFine()
        {
            return fine;
        }
     
        public String toString()
        {
            String string = car + "\n" + officer + "\n" + "The fine is: \n $" +  decimalformat.format(fine) ;
            return string;
        } 
    }
    Last edited by Freaky Chris; November 2nd, 2011 at 05:44 AM. Reason: Added code highlighting


  2. #2
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    Default Re: Calculation error...very New to Java..please be kind.

    First off you should indent your code and use code tags.
    What is happening at:

    if(car.getMinutesParked() >= 60)

    Should you not have some type of calculation here?
    Last edited by csharp100; November 1st, 2011 at 10:24 PM.

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    Default Re: Calculation error...very New to Java..please be kind.

    Sorry about the formatting...it got lost in the c&p..

    As far as that line..

    it is stating that if the car is parked for longer than 60 minutes, then issue a ticket.

    The .getMinutes Parked is from the Parked Car class.

    public int getMinutesParked()
    {
    return minutesParked;
    }
    Last edited by medicinaluser; November 1st, 2011 at 10:59 PM. Reason: trying to get it to format right

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    Default Re: Calculation error...very New to Java..please be kind.

    I fixed it..it was not an error here..boy, feel kinda stupid..lol

    I missed a this statement, and after going through all files, I found it, and all is good.

    Essentiually, I was missing the new parking meter being created.

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