Uses of Class
java.lang.ref.Reference

Packages that use Reference

Package	Description
java.lang.ref	Provides reference-object classes, which support a limited degree of interaction with the garbage collector.

Uses of Reference in java.lang.ref

Subclasses of Reference in java.lang.ref

Modifier and Type	Class and Description
class	PhantomReference Phantom reference objects, which are enqueued after the collector determines that their referents may otherwise be reclaimed.
class	SoftReference Soft reference objects, which are cleared at the discretion of the garbage collector in response to memory demand.
class	WeakReference Weak reference objects, which do not prevent their referents from being made finalizable, finalized, and then reclaimed.

Methods in java.lang.ref that return Reference

Modifier and Type	Method and Description
Reference	ReferenceQueue.poll() Polls this queue to see if a reference object is available.
Reference	ReferenceQueue.remove() Removes the next reference object in this queue, blocking until one becomes available.
Reference	ReferenceQueue.remove(long timeout) Removes the next reference object in this queue, blocking until either one becomes available or the given timeout period expires.