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Package java.lang.ref

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


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