| Application | Application class from which JavaFX applications extend. | 
| Application.Parameters | Encapsulates the set of parameters for an application. | 
| ConditionalFeature | Defines a set of conditional (optional) features. | 
| HostServices | This class provides HostServices for an Application. | 
| Preloader.ErrorNotification | Preloader notification that reports an error. | 
| Preloader.PreloaderNotification | Marker interface for all Preloader notification. | 
| Preloader.ProgressNotification | Preloader notification that reports progress. | 
| Preloader.StateChangeNotification | A notification that signals a change in the application state. | 
| Preloader.StateChangeNotification.Type | Enum that defines the type of change associated with this notification |