How to use

notifyListeners

method

in

org.jfree.chart.plot.CombinedRangeXYPlot

/**
 * Receives a {@link PlotChangeEvent} and responds by notifying all
 * listeners.
 *
 * @param event  the event.
 */
@Override
public void plotChanged(PlotChangeEvent event) {
  notifyListeners(event);
}

/**
 * Receives a {@link PlotChangeEvent} and responds by notifying all
 * listeners.
 *
 * @param event  the event.
 */
public void plotChanged(PlotChangeEvent event) {
  notifyListeners(event);
}