Pair.java

/*
 * The CroudTrip! application aims at revolutionizing the car-ride-sharing market with its easy,
 * user-friendly and highly automated way of organizing shared Trips. Copyright (C) 2015  Nazeeh Ammari,
 *  Philipp Eichhorn, Ricarda Hohn, Vanessa Lange, Alexander Popp, Frederik Simon, Michael Weber
 * This program is free software: you can redistribute it and/or modify  it under the terms of the GNU
 *  Affero General Public License as published by the Free Software Foundation, either version 3 of the
 *   License, or (at your option) any later version.
 *  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 *  even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU Affero General Public License for more details.
 *  You should have received a copy of the GNU Affero General Public License along with this program.
 *    If not, see http://www.gnu.org/licenses/.
 */

package org.croudtrip.utils;

/**
 * A simple pair class.
 * Created by Frederik Simon on 08.05.2015.
 */
public class Pair<K,V> {
    private K key;
    private V value;

    public Pair(K key, V value ) {
        this.key = key;
        this.value = value;
    }

    public K getKey() {
        return key;
    }

    public V getValue() {
        return value;
    }

    public void setKey( K key ) {
        this.key = key;
    }

    public void setValue ( V value ) {
        this.value = value;
    }

    @Override
    public int hashCode() {
        return key.hashCode() ^ value.hashCode();
    }

    @Override
    public boolean equals( Object o ) {
        if( o == null ) return false;
        if( !(o instanceof Pair)) return false;

        Pair p = (Pair) o;
        return this.key.equals(p.key) && this.value.equals(p.value);
    }
}