java.lang.ref
Class PhantomReference<T>
A phantom reference is useful, to get notified, when an object got
finalized. You can't access that object though, since it is
finalized. This is the reason, why get() always
returns null.
T | get()- Returns the object, this reference refers to.
|
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
PhantomReference
public PhantomReference(T referent,
T> q) Creates a new phantom reference.
referent - the object that should be watched.q - the queue that should be notified, if the referent was
finalized. This mustn't be null.
get
public T get()
Returns the object, this reference refers to.
- get in interface Reference<T>
null, since the refered object may be
finalized and thus not accessible.
java.lang.ref.PhantomReference
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