ObservableValueBase (JavaFX 17)

Module javafx.base
Package javafx.beans.value

## Class ObservableValueBase<T>

- java.lang.Object
- - javafx.beans.value.ObservableValueBase<T>

- All Implemented Interfaces:
    `Observable`, `ObservableValue<T>`

      public abstract class ObservableValueBase<T>
      extends Object
      implements ObservableValue<T>

  A convenience class for creating implementations of `ObservableValue`. It contains all of the infrastructure support for value invalidation- and change event notification. This implementation can handle adding and removing listeners while the observers are being notified, but it is not thread-safe.
  Since:
    JavaFX 2.0

- - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `ObservableValueBase()` | Creates a default `ObservableValueBase`.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `protected void` | `fireValueChangedEvent()` | Notify the currently registered observers of a value change.

    - ### Methods declared in class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

    - ### Methods declared in interface javafx.beans.Observable

      `addListener, removeListener`

    - ### Methods declared in interface javafx.beans.value.ObservableValue

      `addListener, getValue, removeListener`

- - ### Constructor Detail

    - #### ObservableValueBase

          public ObservableValueBase()

      Creates a default `ObservableValueBase`.

  - ### Method Detail

    - #### fireValueChangedEvent

          protected void fireValueChangedEvent()

      Notify the currently registered observers of a value change. This implementation will ignore all adds and removes of observers that are done while a notification is processed. The changes take effect in the following call to fireValueChangedEvent.