How to use

setNotify

method

in

org.jfree.chart.plot.CombinedRangeXYPlot

/**
 * Sets the shadow generator for the plot (and all subplots) and sends
 * a {@link PlotChangeEvent} to all registered listeners.
 * 
 * @param generator  the new generator ({@code null} permitted).
 */
@Override
public void setShadowGenerator(ShadowGenerator generator) {
  setNotify(false);
  super.setShadowGenerator(generator);
  Iterator iterator = this.subplots.iterator();
  while (iterator.hasNext()) {
    XYPlot plot = (XYPlot) iterator.next();
    plot.setShadowGenerator(generator);
  }
  setNotify(true);
}