modules/javafx.base/src/main/java/javafx/collections/ObservableListBase.java

@@ -225,18 +225,19 @@
         listenerHelper = ListListenerHelper.removeListener(listenerHelper, listener);
     }
 
     /**
      * Notifies all listeners of a change
-     * @param change
+     * @param change an object representing the change that was done
      */
     protected final void fireChange(ListChangeListener.Change<? extends E> change) {
         ListListenerHelper.fireValueChangedEvent(listenerHelper, change);
     }
 
     /**
      * Returns true if there are some listeners registered for this list.
+     * @return has a listener for this list
      */
     protected final boolean hasListeners() {
         return ListListenerHelper.hasListeners(listenerHelper);
     }