| Name | Description | Type | Package | Framework |
| Application | Application class from which JavaFX applications extend. | Class | javafx.application | Java FX |
| Application .Parameters | Encapsulates the set of parameters for an application. | Class | javafx.application.Application | Java FX |
| ConditionalFeature | enum ConditionalFeatureDefines a set of conditional (optional) features. | Class | javafx.application | Java FX |
| HostServices | This class provides HostServices for an Application. | Class | javafx.application | Java FX |
| Platform | Application platform support class. | Class | javafx.application | Java FX |
| Preloader | Class that is extended to define an optional preloader for a JavaFX Application. | Class | javafx.application | Java FX |
| Preloader .ErrorNotification | Preloader notification that reports an error. | Class | javafx.application.Preloader | Java FX |
| Preloader .ProgressNotification | Preloader notification that reports progress. | Class | javafx.application.Preloader | Java FX |
| Preloader .StateChangeNotification | A notification that signals a change in the application state. | Class | javafx.application.Preloader | Java FX |
| Preloader .StateChangeNotification .Type | Indicates that the application's init method is about to be called. | Class | javafx.application.Preloader.StateChangeNotification | Java FX |