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<div class="subTitle">org.apache.logging.log4j.util</div>
<h2 title="Class StringBuilders" class="title">Class StringBuilders</h2>
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<pre>public final class <a href="../../../../../src-html/org/apache/logging/log4j/util/StringBuilders.html#line.26">StringBuilders</a>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
<div class="block"><em>Consider this class private.</em></div>
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<h3>Method Summary</h3>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/logging/log4j/util/StringBuilders.html#appendDqValue-java.lang.StringBuilder-java.lang.Object-">appendDqValue</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;sb,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;value)</code>
<div class="block">Appends in the following format: double quoted value.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/logging/log4j/util/StringBuilders.html#appendKeyDqValue-java.lang.StringBuilder-java.util.Map.Entry-">appendKeyDqValue</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;sb,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html?is-external=true" title="class or interface in java.util">Map.Entry</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&nbsp;entry)</code>
<div class="block">Appends in the following format: key=double quoted value.</div>
</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/logging/log4j/util/StringBuilders.html#appendKeyDqValue-java.lang.StringBuilder-java.lang.String-java.lang.Object-">appendKeyDqValue</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;sb,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;value)</code>
<div class="block">Appends in the following format: key=double quoted value.</div>
</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/logging/log4j/util/StringBuilders.html#appendSpecificTypes-java.lang.StringBuilder-java.lang.Object-">appendSpecificTypes</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;stringBuilder,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;obj)</code>&nbsp;</td>
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<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/logging/log4j/util/StringBuilders.html#appendValue-java.lang.StringBuilder-java.lang.Object-">appendValue</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;stringBuilder,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;obj)</code>
<div class="block">Appends a text representation of the specified object to the specified StringBuilder,
if possible without allocating temporary objects.</div>
</td>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/logging/log4j/util/StringBuilders.html#equals-java.lang.CharSequence-int-int-java.lang.CharSequence-int-int-">equals</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/CharSequence.html?is-external=true" title="class or interface in java.lang">CharSequence</a>&nbsp;left,
int&nbsp;leftOffset,
int&nbsp;leftLength,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/CharSequence.html?is-external=true" title="class or interface in java.lang">CharSequence</a>&nbsp;right,
int&nbsp;rightOffset,
int&nbsp;rightLength)</code>
<div class="block">Returns true if the specified section of the left CharSequence equals the specified section of the right
CharSequence.</div>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/logging/log4j/util/StringBuilders.html#equalsIgnoreCase-java.lang.CharSequence-int-int-java.lang.CharSequence-int-int-">equalsIgnoreCase</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/CharSequence.html?is-external=true" title="class or interface in java.lang">CharSequence</a>&nbsp;left,
int&nbsp;leftOffset,
int&nbsp;leftLength,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/CharSequence.html?is-external=true" title="class or interface in java.lang">CharSequence</a>&nbsp;right,
int&nbsp;rightOffset,
int&nbsp;rightLength)</code>
<div class="block">Returns true if the specified section of the left CharSequence equals, ignoring case, the specified section of
the right CharSequence.</div>
</td>
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<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/logging/log4j/util/StringBuilders.html#escapeJson-java.lang.StringBuilder-int-">escapeJson</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;toAppendTo,
int&nbsp;start)</code>&nbsp;</td>
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<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/logging/log4j/util/StringBuilders.html#escapeXml-java.lang.StringBuilder-int-">escapeXml</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;toAppendTo,
int&nbsp;start)</code>&nbsp;</td>
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<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/logging/log4j/util/StringBuilders.html#trimToMaxSize-java.lang.StringBuilder-int-">trimToMaxSize</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;stringBuilder,
int&nbsp;maxSize)</code>
<div class="block">Ensures that the char[] array of the specified StringBuilder does not exceed the specified number of characters.</div>
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<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;<a href="../../../../../src-html/org/apache/logging/log4j/util/StringBuilders.html#line.37">appendDqValue</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;sb,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;value)</pre>
<div class="block">Appends in the following format: double quoted value.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>sb</code> - a string builder</dd>
<dd><code>value</code> - a value</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><code>"value"</code></dd>
</dl>
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<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;<a href="../../../../../src-html/org/apache/logging/log4j/util/StringBuilders.html#line.48">appendKeyDqValue</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;sb,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html?is-external=true" title="class or interface in java.util">Map.Entry</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&nbsp;entry)</pre>
<div class="block">Appends in the following format: key=double quoted value.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>sb</code> - a string builder</dd>
<dd><code>entry</code> - a map entry</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><code>key="value"</code></dd>
</dl>
</li>
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<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;<a href="../../../../../src-html/org/apache/logging/log4j/util/StringBuilders.html#line.60">appendKeyDqValue</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;sb,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;value)</pre>
<div class="block">Appends in the following format: key=double quoted value.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>sb</code> - a string builder</dd>
<dd><code>key</code> - a key</dd>
<dd><code>value</code> - a value</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the specified StringBuilder</dd>
</dl>
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<pre>public static&nbsp;void&nbsp;<a href="../../../../../src-html/org/apache/logging/log4j/util/StringBuilders.html#line.71">appendValue</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;stringBuilder,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;obj)</pre>
<div class="block">Appends a text representation of the specified object to the specified StringBuilder,
if possible without allocating temporary objects.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>stringBuilder</code> - the StringBuilder to append the value to</dd>
<dd><code>obj</code> - the object whose text representation to append to the StringBuilder</dd>
</dl>
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<pre>public static&nbsp;boolean&nbsp;<a href="../../../../../src-html/org/apache/logging/log4j/util/StringBuilders.html#line.77">appendSpecificTypes</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;stringBuilder,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;obj)</pre>
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<pre>public static&nbsp;boolean&nbsp;<a href="../../../../../src-html/org/apache/logging/log4j/util/StringBuilders.html#line.118">equals</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/CharSequence.html?is-external=true" title="class or interface in java.lang">CharSequence</a>&nbsp;left,
int&nbsp;leftOffset,
int&nbsp;leftLength,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/CharSequence.html?is-external=true" title="class or interface in java.lang">CharSequence</a>&nbsp;right,
int&nbsp;rightOffset,
int&nbsp;rightLength)</pre>
<div class="block">Returns true if the specified section of the left CharSequence equals the specified section of the right
CharSequence.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>left</code> - the left CharSequence</dd>
<dd><code>leftOffset</code> - start index in the left CharSequence</dd>
<dd><code>leftLength</code> - length of the section in the left CharSequence</dd>
<dd><code>right</code> - the right CharSequence to compare a section of</dd>
<dd><code>rightOffset</code> - start index in the right CharSequence</dd>
<dd><code>rightLength</code> - length of the section in the right CharSequence</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if equal, false otherwise</dd>
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<pre>public static&nbsp;boolean&nbsp;<a href="../../../../../src-html/org/apache/logging/log4j/util/StringBuilders.html#line.143">equalsIgnoreCase</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/CharSequence.html?is-external=true" title="class or interface in java.lang">CharSequence</a>&nbsp;left,
int&nbsp;leftOffset,
int&nbsp;leftLength,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/CharSequence.html?is-external=true" title="class or interface in java.lang">CharSequence</a>&nbsp;right,
int&nbsp;rightOffset,
int&nbsp;rightLength)</pre>
<div class="block">Returns true if the specified section of the left CharSequence equals, ignoring case, the specified section of
the right CharSequence.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>left</code> - the left CharSequence</dd>
<dd><code>leftOffset</code> - start index in the left CharSequence</dd>
<dd><code>leftLength</code> - length of the section in the left CharSequence</dd>
<dd><code>right</code> - the right CharSequence to compare a section of</dd>
<dd><code>rightOffset</code> - start index in the right CharSequence</dd>
<dd><code>rightLength</code> - length of the section in the right CharSequence</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if equal ignoring case, false otherwise</dd>
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<h4>trimToMaxSize</h4>
<pre>public static&nbsp;void&nbsp;<a href="../../../../../src-html/org/apache/logging/log4j/util/StringBuilders.html#line.164">trimToMaxSize</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;stringBuilder,
int&nbsp;maxSize)</pre>
<div class="block">Ensures that the char[] array of the specified StringBuilder does not exceed the specified number of characters.
This method is useful to ensure that excessively long char[] arrays are not kept in memory forever.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>stringBuilder</code> - the StringBuilder to check</dd>
<dd><code>maxSize</code> - the maximum number of characters the StringBuilder is allowed to have</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.9</dd>
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<pre>public static&nbsp;void&nbsp;<a href="../../../../../src-html/org/apache/logging/log4j/util/StringBuilders.html#line.171">escapeJson</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;toAppendTo,
int&nbsp;start)</pre>
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<pre>public static&nbsp;void&nbsp;<a href="../../../../../src-html/org/apache/logging/log4j/util/StringBuilders.html#line.247">escapeXml</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;toAppendTo,
int&nbsp;start)</pre>
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