PhantomReference JDK 1.6)

Description

public class PhantomReference

Phantom reference objects, which are enqueued after the collector determines that their referents may otherwise be reclaimed.

See also:

Constructors

public PhantomReference ( T referent, ReferenceQueue<Object> q)

Creates a new phantom reference that refers to the given object and is registered with the given queue.

Methods

Hide/Show inherited methods

public void clear () [Inherited From Reference]

Clears this reference object.

public boolean enqueue () [Inherited From Reference]

Adds this reference object to the queue with which it is registered, if any.

public T get () [Overrides Reference]

Returns this reference object's referent.

Returns this reference object's referent. Because the referent of a
phantom reference is always inaccessible, this method always returns
null.
Returns: null

public boolean isEnqueued () [Inherited From Reference]

Tells whether or not this reference object has been enqueued, either by the program or by the garbage collector.

Tells whether or not this reference object has been enqueued, either by
the program or by the garbage collector. If this reference object was
not registered with a queue when it was created, then this method will
always return false.
Returns: true if and only if this reference object has been enqueued