public void chartMouseMoved(ChartMouseEvent chartmouseevent) {
   int i = chartmouseevent.getTrigger().getX();
   int j = chartmouseevent.getTrigger().getY();
   ChartEntity chartentity = chartmouseevent.getEntity();
   if (chartentity != null)
     System.out.println("Mouse moved: " + i + ", " + j + ": " + chartentity.toString());
   else System.out.println("Mouse moved: " + i + ", " + j + ": null entity.");
 }
 public void chartMouseClicked(ChartMouseEvent chartmouseevent) {
   ChartEntity chartentity = chartmouseevent.getEntity();
   if (chartentity != null) System.out.println("Mouse clicked: " + chartentity.toString());
   else System.out.println("Mouse clicked: null entity.");
 }