package org.apidesign.apifest08.currency;

 public final class ConvertorFactory {

     //Singleton

     private static ConvertorFactory thisFactory = new ConvertorFactory();    

     private ConvertorFactory() {};    

     public static ConvertorFactory newInstance() {

         return thisFactory;

     }        

     public Convertor createConvertor(String currency1, String currency2, Rate rate) {

         return new Convertor(currency1, currency2, rate);

     }

     public Convertor createConvertor(String currency1, String currency2, int amount1, int amount2) {

         return new Convertor(currency1, currency2, new Rate(amount1, amount2));

     }

     public Convertor createConvertor(String currency1, String currency2, double amount1, double amount2) {

         return new Convertor(currency1, currency2, new Rate(amount1, amount2));

     }

     public Convertor createConvertor(String currency1, String currency2, double rate) {

         return new Convertor(currency1, currency2, new Rate(rate));

     }

 }