public void itemStateChanged(ItemEvent event) {
CheckboxMenuItem theMenuItem = (CheckboxMenuItem) (event.getSource());
String strIndex =
theMenuItem
.getActionCommand()
.substring(theMenuItem.getActionCommand().lastIndexOf('.') + 1);
int index = (new Integer(strIndex)).intValue();
if (theMenuItem.getState()) {
((Component) visibleMapLayers.elementAt(index)).setVisible(true);
} else {
((Component) visibleMapLayers.elementAt(index)).setVisible(false);
}
System.out.println("Action = " + theMenuItem.getActionCommand());
System.out.println(" = " + theMenuItem.getState());
}
