public void removeAnnotations()
{
for (int i = 0; i < this.foregroundAnnotations.size(); i++)
{
XYAnnotation annotation = (XYAnnotation) this.foregroundAnnotations.get(i);
annotation.removeChangeListener(this);
}
for (int i = 0; i < this.backgroundAnnotations.size(); i++)
{
XYAnnotation annotation = (XYAnnotation) this.backgroundAnnotations.get(i);
annotation.removeChangeListener(this);