- Type Parameters:
E- The type of the observed value
public final class WeakListChangeListener<E> extends Object implements ListChangeListener<E>, WeakListenerA
WeakListChangeListenercan be used, if an
ObservableListshould only maintain a weak reference to the listener. This helps to avoid memory leaks, that can occur if observers are not unregistered from observed objects after use.
WeakListChangeListenerare created by passing in the original
WeakListChangeListenershould then be registered to listen for changes of the observed object.
Note: You have to keep a reference to the
ListChangeListener, that was passed in as long as it is in use, otherwise it will be garbage collected to soon.
public boolean wasGarbageCollected()Returns
trueif the linked listener was garbage-collected. In this case, the listener can be removed from the observable.
public void onChanged(ListChangeListener.Change<? extends E> change)Called after a change has been made to an ObservableList.