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| Class Summary | |
| Finalizer | |
| Finalizer.FinalizerThread | |
| FinalReference | |
| PhantomReference | Phantom reference objects, which are enqueued after the collector determines that their referents may otherwise be reclaimed. |
| Reference | Abstract base class for reference objects. |
| Reference.Lock | |
| Reference.ReferenceHandler | |
| ReferenceQueue | Reference queues, to which registered reference objects are appended by the garbage collector after the appropriate reachability changes are detected. |
| ReferenceQueue.Lock | |
| ReferenceQueue.Null | |
| SoftReference | Soft reference objects, which are cleared at the discretion of the garbage collector in response to memory demand. |
| WeakReference | Weak reference objects, which do not prevent their referents from being made finalizable, finalized, and then reclaimed. |
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