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= DevFaqWeakListenerWhen
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== When should I use a WeakListener

You should use a link:DevFaqWeakListener.asciidoc[WeakListener] any time you are adding a listener to an object, but there is no code - and possibly no opportunity - to explicitly remove it.

If the thing you are listening to does have some kind of observable life-cycle, it is preferable to explicitly add and detach listeners.

But in the case that you are adding a listener which is never explicitly removed, it is good form to use `link:http://bits.netbeans.org/dev/javadoc/org-openide-util/org/openide/util/WeakListeners.html[WeakListeners]`

=== Apache Migration Information

The content in this page was kindly donated by Oracle Corp. to the
Apache Software Foundation.

This page was exported from link:http://wiki.netbeans.org/DevFaqWeakListenerWhen[http://wiki.netbeans.org/DevFaqWeakListenerWhen] , 
that was last modified by NetBeans user Tboudreau 
on 2010-01-24T06:12:14Z.


*NOTE:* This document was automatically converted to the AsciiDoc format on 2018-02-07, and needs to be reviewed.