public abstract class FinalizableWeakReference<T> extends WeakReference<T>
finalizeReferent() method which a background
 thread invokes after the garbage collector reclaims the referent. This is a
 simpler alternative to using a ReferenceQueue.| Modifier | Constructor and Description | 
|---|---|
| protected  | FinalizableWeakReference(T referent) | 
| Modifier and Type | Method and Description | 
|---|---|
| void | finalizeReferent()Invoked on a background thread after the referent has been garbage
 collected. | 
protected FinalizableWeakReference(T referent)
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