Package rma.util

Class WeakObserver

java.lang.Object

java.lang.ref.Reference<T>

java.lang.ref.WeakReference

rma.util.WeakObserver

All Implemented Interfaces:

Observer

public class WeakObserver
extends WeakReference
implements Observer

An Observer wrapper that is a WeakReference to the real Observer. When the real Observer is de-referenced, then the WeakObserver removes itself from the Observable's list of Observers.

Constructor Summary

Constructors

Constructor	Description
WeakObserver(Observer referent)

Method Summary

Modifier and Type	Method	Description
void	update(Observable o, Object arg)

Methods inherited from class java.lang.ref.Reference

clear, clone, enqueue, get, isEnqueued, reachabilityFence, refersTo

Methods inherited from class java.lang.Object

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

Constructor Details

WeakObserver

public WeakObserver(Observer referent)

Method Details

update

public void update(Observable o,
 Object arg)

Specified by:

update in interface Observer