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Class Summary
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| GuardedReference |
Guarded reference objects, for use in implementing caches.
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| PhantomReference |
Phantom reference objects, for use in scheduling pre-mortem cleanup
actions.
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| Reference |
Abstract base class for reference objects.
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| ReferenceQueue |
Reference queues, to which registered reference objects are appended by the
garbage collector after the appropriate reachability changes are detected.
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| SoftReference |
Soft reference objects, for use in implementing caches.
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| WeakReference |
Weak reference objects, for use in implementing canonicalizing mappings.
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