JavaFX: how to use ListProperty?

when adding element to ListProperty, like below:

ListProperty<String> members = new SimpleListProperty<String>();
members.add("John");
members.add("David");

it throws UnsupportedOperationException

java.lang.UnsupportedOperationException
  at java.util.AbstractList.add(AbstractList.java:148)
  at java.util.AbstractList.add(AbstractList.java:108)
  at java.util.AbstractCollection.addAll(AbstractCollection.java:334)
  at javafx.beans.binding.ListExpression.addAll(ListExpression.java:280)

The problem was that the ListProperty was not properly initialized. To make it work, see the following code

ObservableList<String> observableList = FXCollections.observableArrayList(new ArrayList<String>());
ListProperty<String> members = new SimpleListProperty<Priority>(observableList);
members.add("John");
members.add("David");

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see also

• http://stackoverflow.com/questions/15457814/using-listproperty-in-javafx