java.lang.ref
Class WeakReference

java.lang.Object
  java.lang.ref.Reference
      java.lang.ref.WeakReference

public class WeakReference
extends Reference

This class provides support for weak references. Weak references are most often used to implement canonicalizing mappings. Suppose that the garbage collector determines at a certain point in time that an object is weakly reachable. At that time it will atomically clear all the weak references to that object and all weak references to any other weakly- reachable objects from which that object is reachable through a chain of strong and weak references.

Since:

JDK1.2, CLDC 1.1

Version:

12/19/01 (CLDC 1.1)

Author:

Mark Reinhold (original JDK implementation)

Constructor Summary

WeakReference(Object ref)
Creates a new weak reference that refers to the given object.

Method Summary

Methods inherited from class java.lang.ref.Reference

clear, get

Methods inherited from class java.lang.Object

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

Constructor Detail

WeakReference

public WeakReference(Object ref)

Creates a new weak reference that refers to the given object.