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      @Override
026      public int hashCode() {
027        return (first.hashCode() | second.hashCode());
028      }
029    
030      @Override
031      public boolean equals(Object o) {
032        if (o instanceof Pair<?, ?>) {
033          Pair<?, ?> p = (Pair<?, ?>) o;
034          return (first == p.first) && (second == p.second);
035        } else {
036          return false;
037        }
038      }
039    }