JavaFX Tutorial 12 - ChoiceBox, ObservableList (Mastered)

The ChoiceBox is used for presenting the user with a relatively small set of predefined choices from which they may choose.
The ObservableList is a collection that is capable of notifying UI controls when objects are added, updated (selected), and removed.
In this example, it allows a user to choose one item out of ten from choice box components.