Uses of Class java.lang.ref.Reference (Java SE 14 & JDK 14)
Description: use: module: java.base, package: java.lang.ref, class: Reference

# 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 | 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.