Package javafx.beans

The package javafx.beans contains the interfaces that define the most generic form of observability.

See: Description

Interface Summary

Interface	Description
InvalidationListener	An InvalidationListener is notified whenever an ObservableValue becomes invalid.
Observable	An Observable is an entity that wraps content and allows to observe the content for invalidations.
WeakListener	WeakListener is the super interface of all weak listener implementations JavaFX runtime.

Class Summary

Class	Description
WeakInvalidationListener	A WeakInvalidationListener can be used, if an Observable should only maintain a weak reference to the listener.

Annotation Types Summary

Annotation Type	Description
DefaultProperty	Specifies a property to which child elements will be added or set when an explicit property is not given.

Package javafx.beans Description

The package javafx.beans contains the interfaces that define the most generic form of observability. All other classes in the JavaFX library, that are observable, extend the Observable interface.

An implementation of Observable allows to attach an InvalidationListener. The contentBinding gets notified every time the Observable may have changed. Typical implementations of Observable are all properties, all bindings, ObservableList, and ObservableMap.

An InvalidationListener will get no further information, e.g. it will not get the old and the new value of a property. If you need more information consider using a ChangeListener for properties and bindings, ListChangeListener for ObservableLists or MapChangeListener for ObservableMap instead.