// $Id: UpdatePacket.java,v 1.5 2007/11/07 00:09:49 zahorjan Exp $

import java.util.*;

/**
 * Objects of this class carry update information from
 * one node to another.
 */

public class UpdatePacket {
    /**
     * Source node (sender of this update packet).
     */
    public Node fromNode;

    /**
     * It's inappropriate to try to construct one of these directly -
     * in fact you can't.  Construct one of the derived classes.
     */
    protected UpdatePacket(Node from) {
        fromNode = from;
    }
}