Is it possible to create read-only observable list?

Question

I have observable list ObservableList<Integer> list = FXCollections.observableArrayList().

In getter method for list I want to return read-only observable list, something like:

public ObservableList<Integer> getReadOnlyList() {
     return readOnlyObservableList(list);
}

and then listen to read-only list

getReadOnlyList().addListener(listChangeListener);

So basically I want to return ObservableList list that is synchronized with original list, so that user can register ListChangeListener and observe change events, but at the same time prevent user from changing the original list.

Answer 1

ObservableList<Integer> list = FXCollections.observableArrayList();
ObservableList<Integer> roList = FXCollections.unmodifiableObservableList(list);

public ObservableList<Integer> getReadOnlyList() {
  return roList;
}