computeprice.java

webwork source

/*
 * WebWork, Web Application Framework
 *
 * Distributable under Apache license.
 * See terms of license at opensource.org
 */
package webwork.examples.i18n;

import java.io.IOException;
import java.io.InputStream;
import java.text.NumberFormat;
import java.util.Properties;

/**
 * This code is an adaptation of the I18N example from the JavaWorld article by Govind Seshadri.
 * http://www.javaworld.com/javaworld/jw-03-2000/jw-03-ssj-jsp_p.html
 */
public class ComputePrice
   extends Shop
{
   // Static --------------------------------------------------------
   static Properties exchangeRates;

   static
   {
      // This never changes, so we do it once only
      exchangeRates = new Properties();

      // We read the values from a file so that it is easy to change
      try
      {
         InputStream in = ComputePrice.class.getResourceAsStream("exchangerates.properties");
         exchangeRates.load(in);
         in.close();
      } catch (IOException e)
      {
         e.printStackTrace(System.err);
         System.err.println("Could not read list of exchange rates");
      }
   }

   // Attributes ----------------------------------------------------
   double price;

   // Public --------------------------------------------------------
   public void setPrice(double price)
   {
      this.price = price;
   }

   public double getRealPrice()
   {
      return computePrice(price);
   }

/*
   public String computePrice(double price)
   {
      String exchangeRate = (String)exchangeRates.getProperty(getLocale().getCountry());

      price *= new Double(exchangeRate).doubleValue();

      NumberFormat form = NumberFormat.getCurrencyInstance(getLocale());
      return form.format(price);
   }
*/

   public double computePrice(double price)
   {
      String exchangeRate = (String)exchangeRates.getProperty(getLocale().getCountry());

      price *= new Double(exchangeRate).doubleValue();

      return price;
   }
}