Overview  Package   Class  Use  Deprecated  Index
Home >> All >> java >> lang >> [ ref overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

---

java.lang.ref
Class PhantomReference  

java.lang.Object
  java.lang.ref.Reference
      java.lang.ref.PhantomReference

---

public class PhantomReference

extends Reference

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.

---

Field Summary

 

Fields inherited from class java.lang.ref.Reference

lock, nextOnQueue, queue, referent

 

Constructor Summary

PhantomReference(java.lang.Object referent, ReferenceQueue q)           Creates a new phantom reference.

 

Method Summary
java.lang.Object	get()           Returns the object, this reference refers to.

 

Methods inherited from class java.lang.ref.Reference

clear, enqueue, isEnqueued

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Constructor Detail

PhantomReference

public PhantomReference(java.lang.Object referent,
                        ReferenceQueue q)

Creates a new phantom reference.

Method Detail

get

public java.lang.Object get()

Returns the object, this reference refers to.

Overrides:

get in class Reference

---

Overview  Package   Class  Use  Deprecated  Index
Home >> All >> java >> lang >> [ ref overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

---