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<h1 title="Package" class="title">Package&nbsp;org.apache.logging.log4j.core.layout</h1>
<div class="docSummary">
<div class="block">Log4j 2 Layout support.</div>
</div>
<p>See:&nbsp;<a href="#package.description">Description</a></p>
</div>
<div class="contentContainer">
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<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/layout/AbstractStringLayout.Serializer.html" title="interface in org.apache.logging.log4j.core.layout">AbstractStringLayout.Serializer</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/AbstractStringLayout.Serializer2.html" title="interface in org.apache.logging.log4j.core.layout">AbstractStringLayout.Serializer2</a></td>
<td class="colLast">
<div class="block">Variation of <a href="../../../../../../org/apache/logging/log4j/core/layout/AbstractStringLayout.Serializer.html" title="interface in org.apache.logging.log4j.core.layout"><code>AbstractStringLayout.Serializer</code></a> that avoids allocating temporary objects.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/ByteBufferDestination.html" title="interface in org.apache.logging.log4j.core.layout">ByteBufferDestination</a></td>
<td class="colLast">
<div class="block">ByteBufferDestination is the destination that <a href="../../../../../../org/apache/logging/log4j/core/layout/Encoder.html" title="interface in org.apache.logging.log4j.core.layout"><code>Encoder</code></a>s write binary data to.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/Encoder.html" title="interface in org.apache.logging.log4j.core.layout">Encoder</a>&lt;T&gt;</td>
<td class="colLast">
<div class="block">Objects implementing the <code>Encoder</code> interface know how to convert an object to some binary representation and
write the result to a <code>ByteBuffer</code>, ideally without creating temporary objects.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/PatternSelector.html" title="interface in org.apache.logging.log4j.core.layout">PatternSelector</a></td>
<td class="colLast">
<div class="block">Allows different patterns to be used with the PatternLayout based on some selection criteria.</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/layout/AbstractCsvLayout.html" title="class in org.apache.logging.log4j.core.layout">AbstractCsvLayout</a></td>
<td class="colLast">
<div class="block">A superclass for Comma-Separated Value (CSV) layouts.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/AbstractLayout.html" title="class in org.apache.logging.log4j.core.layout">AbstractLayout</a>&lt;T extends <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>&gt;</td>
<td class="colLast">
<div class="block">Abstract base class for Layouts.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/AbstractLayout.Builder.html" title="class in org.apache.logging.log4j.core.layout">AbstractLayout.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/layout/AbstractLayout.Builder.html" title="class in org.apache.logging.log4j.core.layout">AbstractLayout.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/layout/AbstractStringLayout.html" title="class in org.apache.logging.log4j.core.layout">AbstractStringLayout</a></td>
<td class="colLast">
<div class="block">Abstract base class for Layouts that result in a String.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/AbstractStringLayout.Builder.html" title="class in org.apache.logging.log4j.core.layout">AbstractStringLayout.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/layout/AbstractStringLayout.Builder.html" title="class in org.apache.logging.log4j.core.layout">AbstractStringLayout.Builder</a>&lt;B&gt;&gt;</td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/ByteBufferDestinationHelper.html" title="class in org.apache.logging.log4j.core.layout">ByteBufferDestinationHelper</a></td>
<td class="colLast">
<div class="block">Helper class for ByteBufferDestination implementors.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/CsvLogEventLayout.html" title="class in org.apache.logging.log4j.core.layout">CsvLogEventLayout</a></td>
<td class="colLast">
<div class="block">A Comma-Separated Value (CSV) layout to log events.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/CsvParameterLayout.html" title="class in org.apache.logging.log4j.core.layout">CsvParameterLayout</a></td>
<td class="colLast">
<div class="block">A Comma-Separated Value (CSV) layout to log event parameters.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/GelfLayout.html" title="class in org.apache.logging.log4j.core.layout">GelfLayout</a></td>
<td class="colLast">
<div class="block">Lays out events in the Graylog Extended Log Format (GELF) 1.1.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/GelfLayout.Builder.html" title="class in org.apache.logging.log4j.core.layout">GelfLayout.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/layout/GelfLayout.Builder.html" title="class in org.apache.logging.log4j.core.layout">GelfLayout.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/layout/HtmlLayout.html" title="class in org.apache.logging.log4j.core.layout">HtmlLayout</a></td>
<td class="colLast">
<div class="block">Outputs events as rows in an HTML table on an HTML page.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/HtmlLayout.Builder.html" title="class in org.apache.logging.log4j.core.layout">HtmlLayout.Builder</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/JsonLayout.html" title="class in org.apache.logging.log4j.core.layout">JsonLayout</a></td>
<td class="colLast">
<div class="block">Appends a series of JSON events as strings serialized as bytes.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/JsonLayout.Builder.html" title="class in org.apache.logging.log4j.core.layout">JsonLayout.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/layout/JsonLayout.Builder.html" title="class in org.apache.logging.log4j.core.layout">JsonLayout.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/layout/LevelPatternSelector.html" title="class in org.apache.logging.log4j.core.layout">LevelPatternSelector</a></td>
<td class="colLast">
<div class="block">Selects the pattern to use based on the Level in the LogEvent.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/LevelPatternSelector.Builder.html" title="class in org.apache.logging.log4j.core.layout">LevelPatternSelector.Builder</a></td>
<td class="colLast">
<div class="block">Custom MarkerPatternSelector builder.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/LockingStringBuilderEncoder.html" title="class in org.apache.logging.log4j.core.layout">LockingStringBuilderEncoder</a></td>
<td class="colLast">
<div class="block">Encoder for StringBuilders that locks on the ByteBufferDestination.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/LoggerFields.html" title="class in org.apache.logging.log4j.core.layout">LoggerFields</a></td>
<td class="colLast">
<div class="block">A LoggerFields container.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/MarkerPatternSelector.html" title="class in org.apache.logging.log4j.core.layout">MarkerPatternSelector</a></td>
<td class="colLast">
<div class="block">Selects the pattern to use based on the Marker in the LogEvent.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/MarkerPatternSelector.Builder.html" title="class in org.apache.logging.log4j.core.layout">MarkerPatternSelector.Builder</a></td>
<td class="colLast">
<div class="block">Custom MarkerPatternSelector builder.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/MessageLayout.html" title="class in org.apache.logging.log4j.core.layout">MessageLayout</a></td>
<td class="colLast">
<div class="block">Formats a <a href="../../../../../../org/apache/logging/log4j/core/LogEvent.html" title="interface in org.apache.logging.log4j.core"><code>LogEvent</code></a> in its <code>Message</code> form.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/PatternLayout.html" title="class in org.apache.logging.log4j.core.layout">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/logging/log4j/core/layout/PatternLayout.Builder.html" title="class in org.apache.logging.log4j.core.layout">PatternLayout.Builder</a></td>
<td class="colLast">
<div class="block">Custom PatternLayout builder.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/PatternLayout.SerializerBuilder.html" title="class in org.apache.logging.log4j.core.layout">PatternLayout.SerializerBuilder</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/PatternMatch.html" title="class in org.apache.logging.log4j.core.layout">PatternMatch</a></td>
<td class="colLast">
<div class="block">PatternMatch configuration item.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/PatternMatch.Builder.html" title="class in org.apache.logging.log4j.core.layout">PatternMatch.Builder</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/Rfc5424Layout.html" title="class in org.apache.logging.log4j.core.layout">Rfc5424Layout</a></td>
<td class="colLast">
<div class="block">Formats a log event in accordance with RFC 5424.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/ScriptPatternSelector.html" title="class in org.apache.logging.log4j.core.layout">ScriptPatternSelector</a></td>
<td class="colLast">
<div class="block">Selects the pattern to use based on the result of executing a Script.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/ScriptPatternSelector.Builder.html" title="class in org.apache.logging.log4j.core.layout">ScriptPatternSelector.Builder</a></td>
<td class="colLast">
<div class="block">Custom ScriptPatternSelector builder.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/SerializedLayout.html" title="class in org.apache.logging.log4j.core.layout">SerializedLayout</a></td>
<td class="colLast">Deprecated
<div class="block"><span class="deprecationComment">Java Serialization has inherent security weaknesses, see https://www.owasp.org/index.php/Deserialization_of_untrusted_data .</span></div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/StringBuilderEncoder.html" title="class in org.apache.logging.log4j.core.layout">StringBuilderEncoder</a></td>
<td class="colLast">
<div class="block">Encoder for StringBuilders that uses ThreadLocals to avoid locking as much as possible.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/SyslogLayout.html" title="class in org.apache.logging.log4j.core.layout">SyslogLayout</a></td>
<td class="colLast">
<div class="block">Formats a log event as a BSD Log record.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/SyslogLayout.Builder.html" title="class in org.apache.logging.log4j.core.layout">SyslogLayout.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/layout/SyslogLayout.Builder.html" title="class in org.apache.logging.log4j.core.layout">SyslogLayout.Builder</a>&lt;B&gt;&gt;</td>
<td class="colLast">
<div class="block">Builds a SyslogLayout.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/TextEncoderHelper.html" title="class in org.apache.logging.log4j.core.layout">TextEncoderHelper</a></td>
<td class="colLast">
<div class="block">Helper class to encode text to binary data without allocating temporary objects.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/XmlLayout.html" title="class in org.apache.logging.log4j.core.layout">XmlLayout</a></td>
<td class="colLast">
<div class="block">Appends a series of <code>event</code> elements as defined in the <a href="log4j.dtd">log4j.dtd</a>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/XmlLayout.Builder.html" title="class in org.apache.logging.log4j.core.layout">XmlLayout.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/layout/XmlLayout.Builder.html" title="class in org.apache.logging.log4j.core.layout">XmlLayout.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/layout/YamlLayout.html" title="class in org.apache.logging.log4j.core.layout">YamlLayout</a></td>
<td class="colLast">
<div class="block">Appends a series of YAML events as strings serialized as bytes.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/YamlLayout.Builder.html" title="class in org.apache.logging.log4j.core.layout">YamlLayout.Builder</a>&lt;B extends <a href="../../../../../../org/apache/logging/log4j/core/layout/YamlLayout.Builder.html" title="class in org.apache.logging.log4j.core.layout">YamlLayout.Builder</a>&lt;B&gt;&gt;</td>
<td class="colLast">&nbsp;</td>
</tr>
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<th class="colFirst" scope="col">Enum</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/GelfLayout.CompressionType.html" title="enum in org.apache.logging.log4j.core.layout">GelfLayout.CompressionType</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../org/apache/logging/log4j/core/layout/HtmlLayout.FontSize.html" title="enum in org.apache.logging.log4j.core.layout">HtmlLayout.FontSize</a></td>
<td class="colLast">
<div class="block">Possible font sizes</div>
</td>
</tr>
</tbody>
</table>
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<h2 title="Package org.apache.logging.log4j.core.layout Description">Package org.apache.logging.log4j.core.layout Description</h2>
<div class="block">Log4j 2 Layout support. <a href="../../../../../../org/apache/logging/log4j/core/Layout.html" title="interface in org.apache.logging.log4j.core"><code>Layout</code></a> plugins should use the
<a href="../../../../../../org/apache/logging/log4j/core/config/plugins/Plugin.html#category--">plugin category</a>
<a href="../../../../../../org/apache/logging/log4j/core/config/Node.html#CATEGORY"><code>Core</code></a> and the
<a href="../../../../../../org/apache/logging/log4j/core/config/plugins/Plugin.html#elementType--">element type</a>
<a href="../../../../../../org/apache/logging/log4j/core/Layout.html#ELEMENT_TYPE"><code>layout</code></a>.</div>
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