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<div class="subTitle">org.apache.log4j.spi</div>
<h2 title="Interface ErrorHandler" class="title">Interface ErrorHandler</h2>
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<pre>public interface <span class="typeNameLabel">ErrorHandler</span>
extends <a href="../../../../org/apache/log4j/spi/OptionHandler.html" title="interface in org.apache.log4j.spi">OptionHandler</a></pre>
<div class="block">Appenders may delegate their error handling to
   <code>ErrorHandlers</code>.

   <p>Error handling is a particularly tedious to get right because by
   definition errors are hard to predict and to reproduce. 


   <p>Please take the time to contact the author in case you discover
   that errors are not properly handled. You are most welcome to
   suggest new error handling policies or criticize existing policies.</div>
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<dt><span class="simpleTagLabel">Author:</span></dt>
<dd>Ceki G&uuml;lc&uuml;</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/ErrorHandler.html#error-java.lang.String-">error</a></span>(java.lang.String&nbsp;message)</code>
<div class="block">This method is normally used to just print the error message
     passed as a parameter.</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/ErrorHandler.html#error-java.lang.String-java.lang.Exception-int-">error</a></span>(java.lang.String&nbsp;message,
     java.lang.Exception&nbsp;e,
     int&nbsp;errorCode)</code>
<div class="block">Equivalent to the <a href="../../../../org/apache/log4j/spi/ErrorHandler.html#error-java.lang.String-java.lang.Exception-int-org.apache.log4j.spi.LoggingEvent-"><code>error(String, Exception, int,
     LoggingEvent event)</code></a> with the the event parameteter set to
     <code>null</code>.</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/ErrorHandler.html#error-java.lang.String-java.lang.Exception-int-org.apache.log4j.spi.LoggingEvent-">error</a></span>(java.lang.String&nbsp;message,
     java.lang.Exception&nbsp;e,
     int&nbsp;errorCode,
     <a href="../../../../org/apache/log4j/spi/LoggingEvent.html" title="class in org.apache.log4j.spi">LoggingEvent</a>&nbsp;event)</code>
<div class="block">This method is invoked to handle the error.</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/ErrorHandler.html#setAppender-org.apache.log4j.Appender-">setAppender</a></span>(<a href="../../../../org/apache/log4j/Appender.html" title="interface in org.apache.log4j">Appender</a>&nbsp;appender)</code>
<div class="block">Set the appender for which errors are handled.</div>
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<tr id="i4" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/log4j/spi/ErrorHandler.html#setBackupAppender-org.apache.log4j.Appender-">setBackupAppender</a></span>(<a href="../../../../org/apache/log4j/Appender.html" title="interface in org.apache.log4j">Appender</a>&nbsp;appender)</code>
<div class="block">Set the appender to falkback upon in case of failure.</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/ErrorHandler.html#setLogger-org.apache.log4j.Logger-">setLogger</a></span>(<a href="../../../../org/apache/log4j/Logger.html" title="class in org.apache.log4j">Logger</a>&nbsp;logger)</code>
<div class="block">Add a reference to a logger to which the failing appender might
     be attached to.</div>
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<h3>Methods inherited from interface&nbsp;org.apache.log4j.spi.<a href="../../../../org/apache/log4j/spi/OptionHandler.html" title="interface in org.apache.log4j.spi">OptionHandler</a></h3>
<code><a href="../../../../org/apache/log4j/spi/OptionHandler.html#activateOptions--">activateOptions</a></code></li>
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<h4>setLogger</h4>
<pre>void&nbsp;setLogger(<a href="../../../../org/apache/log4j/Logger.html" title="class in org.apache.log4j">Logger</a>&nbsp;logger)</pre>
<div class="block">Add a reference to a logger to which the failing appender might
     be attached to. The failing appender will be searched and
     replaced only in the loggers you add through this method.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>logger</code> - One of the loggers that will be searched for the failing
     appender in view of replacement.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.2</dd>
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<h4>error</h4>
<pre>void&nbsp;error(java.lang.String&nbsp;message,
           java.lang.Exception&nbsp;e,
           int&nbsp;errorCode)</pre>
<div class="block">Equivalent to the <a href="../../../../org/apache/log4j/spi/ErrorHandler.html#error-java.lang.String-java.lang.Exception-int-org.apache.log4j.spi.LoggingEvent-"><code>error(String, Exception, int,
     LoggingEvent event)</code></a> with the the event parameteter set to
     <code>null</code>.</div>
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<h4>error</h4>
<pre>void&nbsp;error(java.lang.String&nbsp;message)</pre>
<div class="block">This method is normally used to just print the error message
     passed as a parameter.</div>
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<h4>error</h4>
<pre>void&nbsp;error(java.lang.String&nbsp;message,
           java.lang.Exception&nbsp;e,
           int&nbsp;errorCode,
           <a href="../../../../org/apache/log4j/spi/LoggingEvent.html" title="class in org.apache.log4j.spi">LoggingEvent</a>&nbsp;event)</pre>
<div class="block">This method is invoked to handle the error.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>message</code> - The message assoicated with the error.</dd>
<dd><code>e</code> - The Exption that was thrown when the error occured.</dd>
<dd><code>errorCode</code> - The error code associated with the error.</dd>
<dd><code>event</code> - The logging event that the failing appender is asked
            to log.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.2</dd>
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<h4>setAppender</h4>
<pre>void&nbsp;setAppender(<a href="../../../../org/apache/log4j/Appender.html" title="interface in org.apache.log4j">Appender</a>&nbsp;appender)</pre>
<div class="block">Set the appender for which errors are handled. This method is
     usually called when the error handler is configured.</div>
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<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.2</dd>
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<h4>setBackupAppender</h4>
<pre>void&nbsp;setBackupAppender(<a href="../../../../org/apache/log4j/Appender.html" title="interface in org.apache.log4j">Appender</a>&nbsp;appender)</pre>
<div class="block">Set the appender to falkback upon in case of failure.</div>
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<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.2</dd>
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