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<h1 title="Package" class="title">Package&nbsp;org.apache.logging.log4j.core.appender</h1>
<div class="docSummary">
<div class="block">Log4j 2 Appenders.</div>
</div>
<p>See:&nbsp;<a href="#package.description">Description</a></p>
</div>
<div class="contentContainer">
<ul class="blockList">
<li class="blockList">
<table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Interface Summary table, listing interfaces, and an explanation">
<caption><span>Interface Summary</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Interface</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/ManagerFactory.html" title="interface in org.apache.logging.log4j.core.appender">ManagerFactory</a>&lt;M,T&gt;</td>
<td class="colLast">
<div class="block">Creates Manager objects.</div>
</td>
</tr>
</tbody>
</table>
</li>
<li class="blockList">
<table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Class Summary table, listing classes, and an explanation">
<caption><span>Class Summary</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Class</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/AbstractAppender.html" title="class in org.apache.logging.log4j.core.appender">AbstractAppender</a></td>
<td class="colLast">
<div class="block">Abstract base class for Appenders.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/AbstractAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">AbstractAppender.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/appender/AbstractAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">AbstractAppender.Builder</a>&lt;B&gt;&gt;</td>
<td class="colLast">
<div class="block">Subclasses can extend this abstract Builder.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/AbstractFileAppender.html" title="class in org.apache.logging.log4j.core.appender">AbstractFileAppender</a>&lt;M extends <a href="../../../../../../org/apache/logging/log4j/core/appender/OutputStreamManager.html" title="class in org.apache.logging.log4j.core.appender">OutputStreamManager</a>&gt;</td>
<td class="colLast">
<div class="block">Abstract File Appender.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/AbstractFileAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">AbstractFileAppender.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/appender/AbstractFileAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">AbstractFileAppender.Builder</a>&lt;B&gt;&gt;</td>
<td class="colLast">
<div class="block">Builds FileAppender instances.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/AbstractManager.html" title="class in org.apache.logging.log4j.core.appender">AbstractManager</a></td>
<td class="colLast">
<div class="block">Abstract base class used to register managers.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/AbstractOutputStreamAppender.html" title="class in org.apache.logging.log4j.core.appender">AbstractOutputStreamAppender</a>&lt;M extends <a href="../../../../../../org/apache/logging/log4j/core/appender/OutputStreamManager.html" title="class in org.apache.logging.log4j.core.appender">OutputStreamManager</a>&gt;</td>
<td class="colLast">
<div class="block">Appends log events as bytes to a byte output stream.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/AbstractOutputStreamAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">AbstractOutputStreamAppender.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/appender/AbstractOutputStreamAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">AbstractOutputStreamAppender.Builder</a>&lt;B&gt;&gt;</td>
<td class="colLast">
<div class="block">Subclasses can extend this abstract Builder.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/AbstractWriterAppender.html" title="class in org.apache.logging.log4j.core.appender">AbstractWriterAppender</a>&lt;M extends <a href="../../../../../../org/apache/logging/log4j/core/appender/WriterManager.html" title="class in org.apache.logging.log4j.core.appender">WriterManager</a>&gt;</td>
<td class="colLast">
<div class="block">Appends log events as strings to a writer.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/AppenderSet.html" title="class in org.apache.logging.log4j.core.appender">AppenderSet</a></td>
<td class="colLast">
<div class="block">A deferred plugin for appenders.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/AppenderSet.Builder.html" title="class in org.apache.logging.log4j.core.appender">AppenderSet.Builder</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/AsyncAppender.html" title="class in org.apache.logging.log4j.core.appender">AsyncAppender</a></td>
<td class="colLast">
<div class="block">Appends to one or more Appenders asynchronously.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/AsyncAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">AsyncAppender.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/appender/AsyncAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">AsyncAppender.Builder</a>&lt;B&gt;&gt;</td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/ConfigurationFactoryData.html" title="class in org.apache.logging.log4j.core.appender">ConfigurationFactoryData</a></td>
<td class="colLast">
<div class="block">Factory Data that carries a configuration.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/ConsoleAppender.html" title="class in org.apache.logging.log4j.core.appender">ConsoleAppender</a></td>
<td class="colLast">
<div class="block">Appends log events to <code>System.out</code> or <code>System.err</code> using a layout specified by the user.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/ConsoleAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">ConsoleAppender.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/appender/ConsoleAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">ConsoleAppender.Builder</a>&lt;B&gt;&gt;</td>
<td class="colLast">
<div class="block">Builds ConsoleAppender instances.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/CountingNoOpAppender.html" title="class in org.apache.logging.log4j.core.appender">CountingNoOpAppender</a></td>
<td class="colLast">
<div class="block">No-Operation Appender that counts events.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/DefaultErrorHandler.html" title="class in org.apache.logging.log4j.core.appender">DefaultErrorHandler</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/FailoverAppender.html" title="class in org.apache.logging.log4j.core.appender">FailoverAppender</a></td>
<td class="colLast">
<div class="block">The FailoverAppender will capture exceptions in an Appender and then route the event
to a different appender.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/FailoversPlugin.html" title="class in org.apache.logging.log4j.core.appender">FailoversPlugin</a></td>
<td class="colLast">
<div class="block">The array of failover Appenders.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/FileAppender.html" title="class in org.apache.logging.log4j.core.appender">FileAppender</a></td>
<td class="colLast">
<div class="block">File Appender.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/FileAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">FileAppender.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/appender/FileAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">FileAppender.Builder</a>&lt;B&gt;&gt;</td>
<td class="colLast">
<div class="block">Builds FileAppender instances.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/FileManager.html" title="class in org.apache.logging.log4j.core.appender">FileManager</a></td>
<td class="colLast">
<div class="block">Manages actual File I/O for File Appenders.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/HttpAppender.html" title="class in org.apache.logging.log4j.core.appender">HttpAppender</a></td>
<td class="colLast">
<div class="block">Sends log events over HTTP.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/HttpAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">HttpAppender.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/appender/HttpAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">HttpAppender.Builder</a>&lt;B&gt;&gt;</td>
<td class="colLast">
<div class="block">Builds HttpAppender instances.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/HttpManager.html" title="class in org.apache.logging.log4j.core.appender">HttpManager</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/HttpURLConnectionManager.html" title="class in org.apache.logging.log4j.core.appender">HttpURLConnectionManager</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/MemoryMappedFileAppender.html" title="class in org.apache.logging.log4j.core.appender">MemoryMappedFileAppender</a></td>
<td class="colLast">
<div class="block">Memory Mapped File Appender.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/MemoryMappedFileAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">MemoryMappedFileAppender.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/appender/MemoryMappedFileAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">MemoryMappedFileAppender.Builder</a>&lt;B&gt;&gt;</td>
<td class="colLast">
<div class="block">Builds RandomAccessFileAppender instances.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/MemoryMappedFileManager.html" title="class in org.apache.logging.log4j.core.appender">MemoryMappedFileManager</a></td>
<td class="colLast">
<div class="block">Extends OutputStreamManager but instead of using a buffered output stream, this class maps a region of a file into
memory and writes to this memory region.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/NullAppender.html" title="class in org.apache.logging.log4j.core.appender">NullAppender</a></td>
<td class="colLast">
<div class="block">An Appender that ignores log events.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/OutputStreamAppender.html" title="class in org.apache.logging.log4j.core.appender">OutputStreamAppender</a></td>
<td class="colLast">
<div class="block">Appends log events to a given output stream using a layout.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/OutputStreamAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">OutputStreamAppender.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/appender/OutputStreamAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">OutputStreamAppender.Builder</a>&lt;B&gt;&gt;</td>
<td class="colLast">
<div class="block">Builds OutputStreamAppender instances.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/OutputStreamManager.html" title="class in org.apache.logging.log4j.core.appender">OutputStreamManager</a></td>
<td class="colLast">
<div class="block">Manages an OutputStream so that it can be shared by multiple Appenders and will
allow appenders to reconfigure without requiring a new stream.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/RandomAccessFileAppender.html" title="class in org.apache.logging.log4j.core.appender">RandomAccessFileAppender</a></td>
<td class="colLast">
<div class="block">File Appender.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/RandomAccessFileAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">RandomAccessFileAppender.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/appender/RandomAccessFileAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">RandomAccessFileAppender.Builder</a>&lt;B&gt;&gt;</td>
<td class="colLast">
<div class="block">Builds RandomAccessFileAppender instances.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/RandomAccessFileManager.html" title="class in org.apache.logging.log4j.core.appender">RandomAccessFileManager</a></td>
<td class="colLast">
<div class="block">Extends OutputStreamManager but instead of using a buffered output stream,
this class uses a <code>ByteBuffer</code> and a <code>RandomAccessFile</code> to do the
I/O.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/RollingFileAppender.html" title="class in org.apache.logging.log4j.core.appender">RollingFileAppender</a></td>
<td class="colLast">
<div class="block">An appender that writes to files and can roll over at intervals.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/RollingFileAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">RollingFileAppender.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/appender/RollingFileAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">RollingFileAppender.Builder</a>&lt;B&gt;&gt;</td>
<td class="colLast">
<div class="block">Builds FileAppender instances.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/RollingRandomAccessFileAppender.html" title="class in org.apache.logging.log4j.core.appender">RollingRandomAccessFileAppender</a></td>
<td class="colLast">
<div class="block">An appender that writes to random access files and can roll over at
intervals.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/RollingRandomAccessFileAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">RollingRandomAccessFileAppender.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/appender/RollingRandomAccessFileAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">RollingRandomAccessFileAppender.Builder</a>&lt;B&gt;&gt;</td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/ScriptAppenderSelector.html" title="class in org.apache.logging.log4j.core.appender">ScriptAppenderSelector</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/ScriptAppenderSelector.Builder.html" title="class in org.apache.logging.log4j.core.appender">ScriptAppenderSelector.Builder</a></td>
<td class="colLast">
<div class="block">Builds an appender.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/SmtpAppender.html" title="class in org.apache.logging.log4j.core.appender">SmtpAppender</a></td>
<td class="colLast">
<div class="block">Send an e-mail when a specific logging event occurs, typically on errors or
fatal errors.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/SocketAppender.html" title="class in org.apache.logging.log4j.core.appender">SocketAppender</a></td>
<td class="colLast">
<div class="block">An Appender that delivers events over socket connections.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/SocketAppender.AbstractBuilder.html" title="class in org.apache.logging.log4j.core.appender">SocketAppender.AbstractBuilder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/appender/SocketAppender.AbstractBuilder.html" title="class in org.apache.logging.log4j.core.appender">SocketAppender.AbstractBuilder</a>&lt;B&gt;&gt;</td>
<td class="colLast">
<div class="block">Subclasses can extend this abstract Builder.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/SocketAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">SocketAppender.Builder</a></td>
<td class="colLast">
<div class="block">Builds a SocketAppender.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/SyslogAppender.html" title="class in org.apache.logging.log4j.core.appender">SyslogAppender</a></td>
<td class="colLast">
<div class="block">The Syslog Appender.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/SyslogAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">SyslogAppender.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/appender/SyslogAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">SyslogAppender.Builder</a>&lt;B&gt;&gt;</td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/TlsSyslogFrame.html" title="class in org.apache.logging.log4j.core.appender">TlsSyslogFrame</a></td>
<td class="colLast">
<div class="block">Wraps messages that are formatted according to RFC 5425.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/WriterAppender.html" title="class in org.apache.logging.log4j.core.appender">WriterAppender</a></td>
<td class="colLast">
<div class="block">Appends log events to a <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Writer.html?is-external=true" title="class or interface in java.io"><code>Writer</code></a>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/WriterAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">WriterAppender.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/appender/WriterAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">WriterAppender.Builder</a>&lt;B&gt;&gt;</td>
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<div class="block">Builds WriterAppender instances.</div>
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<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/WriterManager.html" title="class in org.apache.logging.log4j.core.appender">WriterManager</a></td>
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<div class="block">Manages a Writer so that it can be shared by multiple Appenders and will
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<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/ConsoleAppender.Target.html" title="enum in org.apache.logging.log4j.core.appender">ConsoleAppender.Target</a></td>
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<div class="block">Enumeration of console destinations.</div>
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<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/appender/AppenderLoggingException.html" title="class in org.apache.logging.log4j.core.appender">AppenderLoggingException</a></td>
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<div class="block">Thrown from an appender when a log event could not be written.</div>
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<div class="block">Log4j 2 Appenders.</div>
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