Creates a new javafx.beans.binding.IntegerBinding that contains the element of an javafx.collections.ObservableArray at the specified position. The IntegerBinding will hold 0 if the index is outside of the ObservableArray.

Parameters:

op		the ObservableArray
index		the position in the ObservableArray

Returns:  the new IntegerBinding

Exceptions:

NullPointerException

if the ObservableArray or index is null

Since:  JavaFX 8.0