Uses of Class

Packages that use Reference
Package Description
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 Description
    class  PhantomReference<T>
    Phantom reference objects, which are enqueued after the collector determines that their referents may otherwise be reclaimed.
    class  SoftReference<T>
    Soft reference objects, which are cleared at the discretion of the garbage collector in response to memory demand.
    class  WeakReference<T>
    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 Description
    Reference<? extends T> ReferenceQueue.poll()
    Polls this queue to see if a reference object is available.
    Reference<? extends T> ReferenceQueue.remove()
    Removes the next reference object in this queue, blocking until one becomes available.
    Reference<? extends T> ReferenceQueue.remove​(long timeout)
    Removes the next reference object in this queue, blocking until either one becomes available or the given timeout period expires.