Package java.lang.ref

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.