1  /**

  2     A simple invoice formatter.

  3  */

  4  public class SimpleFormatter implements InvoiceFormatter

  5  {

  6     public String formatHeader()

  7     {

  8        total = 0;

  9        return "     I N V O I C E\n\n\n";

 10     }

 11  

 12     public String formatLineItem(LineItem item)

 13     {

 14        total += item.getPrice();

 15        return (String.format(

 16              "%s: $%.2f\n",item.toString(),item.getPrice()));

 17     }

 18  

 19     public String formatFooter()

 20     {

 21        return (String.format("\n\nTOTAL DUE: $%.2f\n", total));

 22     }

 23  

 24     private double total;

 25  }