Observable.java

/*
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package interaction;

/**
 *
 * @author tristangoffman
 */
public interface Observable {
    /*
     * Adds 
     */
    void addListener(ExperimentInteractionListener ob);
    
    /* Notify all listeners of interaciton */
    void notifyListeners(ExperimentInteraction in);    
    void notifyListeners(ExperimentInteractionEvent in);
}