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<div class="subTitle">org.apache.log4j.spi</div>
<h2 title="Interface LoggerEventListener" class="title">Interface LoggerEventListener</h2>
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<pre>public interface <span class="typeNameLabel">LoggerEventListener</span></pre>
<div class="block">Interface used to listen for Logger related events such as
add/remove appender or changing levels. Clients register an instance of
the interface and the instance is called back when the various events occur.
LoggerRepository provides methods for adding and removing
LoggerEventListener instances.
When implementing the methods of this interface, it is useful to remember
that the Logger can access the repository using its getRepository()
method.</div>
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<dt><span class="simpleTagLabel">Author:</span></dt>
<dd>Ceki G&uuml;lc&uuml;, Mark Womack</dd>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/log4j/spi/LoggerEventListener.html#appenderAddedEvent-org.apache.log4j.Logger-org.apache.log4j.Appender-">appenderAddedEvent</a></span>(org.apache.log4j.Logger&nbsp;logger,
org.apache.log4j.Appender&nbsp;appender)</code>
<div class="block">Called when an appender is added to the logger.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/log4j/spi/LoggerEventListener.html#appenderRemovedEvent-org.apache.log4j.Logger-org.apache.log4j.Appender-">appenderRemovedEvent</a></span>(org.apache.log4j.Logger&nbsp;logger,
org.apache.log4j.Appender&nbsp;appender)</code>
<div class="block">Called when an appender is removed from the logger.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/log4j/spi/LoggerEventListener.html#levelChangedEvent-org.apache.log4j.Logger-">levelChangedEvent</a></span>(org.apache.log4j.Logger&nbsp;logger)</code>
<div class="block">Called when level changed on the logger.</div>
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<h4>appenderAddedEvent</h4>
<pre>void&nbsp;appenderAddedEvent(org.apache.log4j.Logger&nbsp;logger,
org.apache.log4j.Appender&nbsp;appender)</pre>
<div class="block">Called when an appender is added to the logger.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>logger</code> - The logger to which the appender was added.</dd>
<dd><code>appender</code> - The appender added to the logger.</dd>
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<pre>void&nbsp;appenderRemovedEvent(org.apache.log4j.Logger&nbsp;logger,
org.apache.log4j.Appender&nbsp;appender)</pre>
<div class="block">Called when an appender is removed from the logger.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>logger</code> - The logger from which the appender was removed.</dd>
<dd><code>appender</code> - The appender removed from the logger.</dd>
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<pre>void&nbsp;levelChangedEvent(org.apache.log4j.Logger&nbsp;logger)</pre>
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<dd><code>logger</code> - The logger that changed levels.</dd>
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