package org.apidesign.apifest08.currency;

 public final class Pair<A,B> {

     private final A first;

     private final B second;

     public Pair(A first, B second) {

 	this.first = first;

 	this.second = second;

     }

     public A getFirst() { return first; }

     public B getSecond() { return second; }

     @Override

     public String toString() {

         return "(" + first + ", " + second + ")";

     }

     private static boolean equals(Object x, Object y) {

 	return (x == null && y == null) || (x != null && x.equals(y));

     }

     @Override

     public int hashCode() {

         int hash = 5;

         hash = 59 * hash + (this.first != null ? this.first.hashCode() : 0);

         hash = 59 * hash + (this.second != null ? this.second.hashCode() : 0);

         return hash;

     }

     @Override

     public boolean equals(Object obj) {

         if (obj == null) {

             return false;

         }

         if (getClass() != obj.getClass()) {

             return false;

         }

         final Pair<A, B> other = (Pair<A, B>) obj;

         if (this.first != other.first && (this.first == null || !this.first.equals(other.first))) {

             return false;

         }

         if (this.second != other.second && (this.second == null || !this.second.equals(other.second))) {

             return false;

         }

         return true;

     }

 }