/*
 Copyright (C) 2007 Richard Gomes

 This source code is release under the BSD License.

 This file is part of JQuantLib, a free-software/open-source library
 for financial quantitative analysts and developers - http://jquantlib.org/

 JQuantLib is free software: you can redistribute it and/or modify it
 under the terms of the JQuantLib license.  You should have received a
 copy of the license along with this program; if not, please email
 . The license is also available online at
 .

 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 license for more details.

 JQuantLib is based on QuantLib. http://quantlib.org/
 When applicable, the original copyright notice follows this notice.
 */

package org.jquantlib.util;

/**
 * This interface is intended to provide more flexibility to complex object
 * models when multiple inheritance is needed.
 *
 * 

 * This class is based on the work done by Martin Fischer, with only minor changes.
 * See references below.
 *
 * @see Martin
 *      Fischer: Observer and Observable interfaces
 * @see Improved
 *      Observer/Observable
 * @see Observable
 *
 * @author Martin Fischer (original author)
 * @author Richard Gomes
 */
public interface Observer {

    /**
     * This method is called whenever the observed object is changed.
     *
     * @param o
     * @param arg
     */
    //XXX::OBS public void update(Observable o, Object arg);
    public void update();

}