001    /*
002     *  This file is part of the Jikes RVM project (http://jikesrvm.org).
003     *
004     *  This file is licensed to You under the Eclipse Public License (EPL);
005     *  You may not use this file except in compliance with the License. You
006     *  may obtain a copy of the License at
007     *
008     *      http://www.opensource.org/licenses/eclipse-1.0.php
009     *
010     *  See the COPYRIGHT.txt file distributed with this work for information
011     *  regarding copyright ownership.
012     */
013    
014    package org.jikesrvm.util;
015    
016    public class Pair<X, Y> {
017      public final X first;
018      public final Y second;
019    
020      public Pair(X f, Y s) {
021        first = f;
022        second = s;
023      }
024    
025      public int hashCode() {
026        return (first.hashCode() | second.hashCode());
027      }
028    
029      public boolean equals(Object o) {
030        if (o instanceof Pair<?, ?>) {
031          Pair<?, ?> p = (Pair<?, ?>) o;
032          return (first == p.first) && (second == p.second);
033        } else {
034          return false;
035        }
036      }
037    }