class JFreeChart implements Drawable, TitleChangeListener,
        PlotChangeListener, Serializable, Cloneable {

    public void addSubtitle(String subtitle) {
        addSubtitle(new TextTitle(subtitle, DEFAULT_SUBTITLE_FONT));    
    }

    public  JFreeChart(Plot plot);
    public  JFreeChart(String title, Plot plot);
    public  JFreeChart(String title, Font titleFont, Plot plot,
                      boolean createLegend);

}