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<h1 title="Package" class="title">Package org.apache.log4j</h1>
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<div class="block">The main log4j package.</div>
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<p>See: <a href="#package.description">Description</a></p>
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<th class="colFirst" scope="col">Interface</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><a href="../../../org/apache/log4j/Appender.html" title="interface in org.apache.log4j">Appender</a></td>
<td class="colLast">
<div class="block">Implement this interface for your own strategies for outputting log
statements.</div>
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<th class="colFirst" scope="col">Class</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><a href="../../../org/apache/log4j/AppenderSkeleton.html" title="class in org.apache.log4j">AppenderSkeleton</a></td>
<td class="colLast">
<div class="block">Abstract superclass of the other appenders in the package.</div>
</td>
</tr>
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<td class="colFirst"><a href="../../../org/apache/log4j/AsyncAppender.html" title="class in org.apache.log4j">AsyncAppender</a></td>
<td class="colLast">
<div class="block">The AsyncAppender lets users log events asynchronously.</div>
</td>
</tr>
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<td class="colFirst"><a href="../../../org/apache/log4j/BasicConfigurator.html" title="class in org.apache.log4j">BasicConfigurator</a></td>
<td class="colLast">
<div class="block">Use this class to quickly configure the package.</div>
</td>
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<td class="colFirst"><a href="../../../org/apache/log4j/Category.html" title="class in org.apache.log4j">Category</a></td>
<td class="colLast">
<div class="block"><font color="#AA2222"><b>This class has been deprecated and
replaced by the <a href="../../../org/apache/log4j/Logger.html" title="class in org.apache.log4j"><code>Logger</code></a> <em>subclass</em></b></font>.</div>
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<td class="colFirst"><a href="../../../org/apache/log4j/ConsoleAppender.html" title="class in org.apache.log4j">ConsoleAppender</a></td>
<td class="colLast">
<div class="block">ConsoleAppender appends log events to <code>System.out</code> or
<code>System.err</code> using a layout specified by the user.</div>
</td>
</tr>
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<td class="colFirst"><a href="../../../org/apache/log4j/DailyRollingFileAppender.html" title="class in org.apache.log4j">DailyRollingFileAppender</a></td>
<td class="colLast">
<div class="block">DailyRollingFileAppender extends <a href="../../../org/apache/log4j/FileAppender.html" title="class in org.apache.log4j"><code>FileAppender</code></a> so that the
underlying file is rolled over at a user chosen frequency.</div>
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<td class="colFirst"><a href="../../../org/apache/log4j/DefaultThrowableRenderer.html" title="class in org.apache.log4j">DefaultThrowableRenderer</a></td>
<td class="colLast">
<div class="block">Default implementation of ThrowableRenderer using
Throwable.printStackTrace.</div>
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<td class="colFirst"><a href="../../../org/apache/log4j/EnhancedPatternLayout.html" title="class in org.apache.log4j">EnhancedPatternLayout</a></td>
<td class="colLast">
<div class="block">This class is an enhanced version of org.apache.log4j.PatternLayout
which was originally developed as part of the abandoned log4j 1.3
effort and has been available in the extras companion.</div>
</td>
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<td class="colFirst"><a href="../../../org/apache/log4j/EnhancedThrowableRenderer.html" title="class in org.apache.log4j">EnhancedThrowableRenderer</a></td>
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<div class="block">Enhanced implementation of ThrowableRenderer.</div>
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<td class="colFirst"><a href="../../../org/apache/log4j/FileAppender.html" title="class in org.apache.log4j">FileAppender</a></td>
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<div class="block">FileAppender appends log events to a file.</div>
</td>
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<td class="colFirst"><a href="../../../org/apache/log4j/Hierarchy.html" title="class in org.apache.log4j">Hierarchy</a></td>
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<div class="block">This class is specialized in retrieving loggers by name and also
maintaining the logger hierarchy.</div>
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<td class="colFirst"><a href="../../../org/apache/log4j/HTMLLayout.html" title="class in org.apache.log4j">HTMLLayout</a></td>
<td class="colLast">
<div class="block">This layout outputs events in a HTML table.</div>
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<td class="colFirst"><a href="../../../org/apache/log4j/Layout.html" title="class in org.apache.log4j">Layout</a></td>
<td class="colLast">
<div class="block">Extend this abstract class to create your own log layout format.</div>
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<td class="colFirst"><a href="../../../org/apache/log4j/Level.html" title="class in org.apache.log4j">Level</a></td>
<td class="colLast">
<div class="block">Defines the minimum set of levels recognized by the system, that is
<code>OFF</code>, <code>FATAL</code>, <code>ERROR</code>,
<code>WARN</code>, <code>INFO</code, <code>DEBUG</code> and
<code>ALL</code>.</div>
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<td class="colFirst"><a href="../../../org/apache/log4j/Logger.html" title="class in org.apache.log4j">Logger</a></td>
<td class="colLast">
<div class="block">This is the central class in the log4j package.</div>
</td>
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<td class="colFirst"><a href="../../../org/apache/log4j/LogManager.html" title="class in org.apache.log4j">LogManager</a></td>
<td class="colLast">
<div class="block">Use the <code>LogManager</code> class to retreive <a href="../../../org/apache/log4j/Logger.html" title="class in org.apache.log4j"><code>Logger</code></a>
instances or to operate on the current <a href="../../../org/apache/log4j/spi/LoggerRepository.html" title="interface in org.apache.log4j.spi"><code>LoggerRepository</code></a>.</div>
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<td class="colFirst"><a href="../../../org/apache/log4j/LogMF.html" title="class in org.apache.log4j">LogMF</a></td>
<td class="colLast">
<div class="block">This class provides parameterized logging services
using the pattern syntax of java.text.MessageFormat.</div>
</td>
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<td class="colFirst"><a href="../../../org/apache/log4j/LogSF.html" title="class in org.apache.log4j">LogSF</a></td>
<td class="colLast">
<div class="block">This class provides parameterized logging services
using the SLF4J pattern syntax.</div>
</td>
</tr>
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<td class="colFirst"><a href="../../../org/apache/log4j/LogXF.html" title="class in org.apache.log4j">LogXF</a></td>
<td class="colLast">
<div class="block">This is a base class for LogMF and LogSF parameterized logging classes.</div>
</td>
</tr>
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<td class="colFirst"><a href="../../../org/apache/log4j/MDC.html" title="class in org.apache.log4j">MDC</a></td>
<td class="colLast">
<div class="block">The MDC class is similar to the <a href="../../../org/apache/log4j/NDC.html" title="class in org.apache.log4j"><code>NDC</code></a> class except that it is
based on a map instead of a stack.</div>
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<td class="colFirst"><a href="../../../org/apache/log4j/NDC.html" title="class in org.apache.log4j">NDC</a></td>
<td class="colLast">
<div class="block">The NDC class implements <i>nested diagnostic contexts</i> as
defined by Neil Harrison in the article "Patterns for Logging
Diagnostic Messages" part of the book "<i>Pattern Languages of
Program Design 3</i>" edited by Martin et al.</div>
</td>
</tr>
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<td class="colFirst"><a href="../../../org/apache/log4j/PatternLayout.html" title="class in org.apache.log4j">PatternLayout</a></td>
<td class="colLast">
<div class="block">A flexible layout configurable with pattern string.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../org/apache/log4j/Priority.html" title="class in org.apache.log4j">Priority</a></td>
<td class="colLast">
<div class="block"><font color="#AA4444">Refrain from using this class directly, use
the <a href="../../../org/apache/log4j/Level.html" title="class in org.apache.log4j"><code>Level</code></a> class instead</font>.</div>
</td>
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<td class="colFirst"><a href="../../../org/apache/log4j/PropertyConfigurator.html" title="class in org.apache.log4j">PropertyConfigurator</a></td>
<td class="colLast">
<div class="block">Allows the configuration of log4j from an external file.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../org/apache/log4j/RollingFileAppender.html" title="class in org.apache.log4j">RollingFileAppender</a></td>
<td class="colLast">
<div class="block">RollingFileAppender extends FileAppender to backup the log files when
they reach a certain size.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../org/apache/log4j/SimpleLayout.html" title="class in org.apache.log4j">SimpleLayout</a></td>
<td class="colLast">
<div class="block">SimpleLayout consists of the level of the log statement,
followed by " - " and then the log message itself.</div>
</td>
</tr>
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<td class="colFirst"><a href="../../../org/apache/log4j/TTCCLayout.html" title="class in org.apache.log4j">TTCCLayout</a></td>
<td class="colLast">
<div class="block">TTCC layout format consists of time, thread, category and nested
diagnostic context information, hence the name.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../org/apache/log4j/WriterAppender.html" title="class in org.apache.log4j">WriterAppender</a></td>
<td class="colLast">
<div class="block">WriterAppender appends log events to a <code>Writer</code> or an
<code>OutputStream</code> depending on the user's choice.</div>
</td>
</tr>
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</table>
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<h2 title="Package org.apache.log4j Description">Package org.apache.log4j Description</h2>
<div class="block"><p>The main log4j package.
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<div class="aboutLanguage"><b>Log4j 1.2.17</b><!-- Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the 'License'); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an 'AS IS' BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --></div>
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