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Thread: Why wont my program calculate sales tax?

  1. #1
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    Question SOLVED: Why wont my program calculate sales tax?

    import javax.swing.*;
    public class Purchase
    {
     private static double invoiceNumber;
     private static double ammountOfSale;
     private static double salesTax;
     
     public double getInvoiceNumber()
     {
      return invoiceNumber;
     }
     public void setInvoiceNumber(double invoice)
     {
      invoiceNumber = invoice;
     }
     
      public double getAmmountOfSale()
     {
      return ammountOfSale;
     }
     public void setAmmountOfSale(double sale)
     {
      ammountOfSale = sale;
     }
     
     public double setSalesTax()
     {
      salesTax = .05 * ammountOfSale;
    	return salesTax;
     }
     public static void displayInfo()
     {
      JOptionPane.showMessageDialog(null, "Invoice#: " + invoiceNumber + 
    	                              "\nSale Ammount: $" + ammountOfSale +
    																"\nSales Tax: $" + salesTax);
     }
    }
    Can anyone tell me why the program will not calculate the sales tax? Thanks in advance.
    Last edited by scholaryoshi; February 28th, 2012 at 07:32 PM. Reason: Solved


  2. #2
    Junior Member
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    Default Re: Why wont my program calculate sales tax?

    Shoulnd't u also write a void main? there u would call the other methods as setSalesTax, then u would call displayInfo.
    I don't know much from it, just trying to solve that

  3. The Following User Says Thank You to Nhedro For This Useful Post:

    scholaryoshi (February 28th, 2012)

  4. #3
    Junior Member
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    Default Re: Why wont my program calculate sales tax?

    Quote Originally Posted by Nhedro View Post
    Shoulnd't u also write a void main? there u would call the other methods as setSalesTax, then u would call displayInfo.
    I don't know much from it, just trying to solve that
    That was exactly right thank you for that out to me!

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