javafx.beans

Interface WeakListener

All Known Implementing Classes:

WeakChangeListener, WeakInvalidationListener, WeakListChangeListener, WeakMapChangeListener, WeakSetChangeListener

public interface WeakListener

WeakListener is the super interface of all weak listener implementations JavaFX runtime. Usually it should not be used directly, but instead one of the sub-interfaces will be used.

Since:

JavaFX 2.1

Method Summary

All MethodsInstance MethodsAbstract Methods
Modifier and Type Method and Description

boolean wasGarbageCollected()
Returns true if the linked listener was garbage-collected.

All MethodsInstance MethodsAbstract Methods
Modifier and Type	Method and Description
`boolean`	`wasGarbageCollected()` Returns `true` if the linked listener was garbage-collected.

Method Detail
- wasGarbageCollected
```
boolean wasGarbageCollected()
```
  Returns true if the linked listener was garbage-collected. In this case, the listener can be removed from the observable.
  
  Returns:
  
  true if the linked listener was garbage-collected.

© 2008, 2025, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from JavaFX API Documentation.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Java, JavaFX and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.

Interface WeakListener

Method Summary

Method Detail

wasGarbageCollected