| Class | Description |
|---|---|
| Reference<T> |
Abstract base class for reference objects.
|
| ReferenceQueue<T> |
Reference queues, to which registered reference objects are appended by the garbage collector
after the appropriate reachability changes are detected.
|
| WeakReference<T> |
Weak reference objects, which do not prevent their referents from being made finalizable,
finalized, and then reclaimed.
|