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<div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">org.apache.hadoop.hbase.io.hfile</a></div>
<h1 title="Class BlockCacheUtil.CachedBlocksByFile" class="title">Class BlockCacheUtil.CachedBlocksByFile</h1>
</div>
<div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a>
<div class="inheritance">org.apache.hadoop.hbase.io.hfile.BlockCacheUtil.CachedBlocksByFile</div>
</div>
<section class="class-description" id="class-description">
<dl class="notes">
<dt>Enclosing class:</dt>
<dd><a href="BlockCacheUtil.html" title="class in org.apache.hadoop.hbase.io.hfile">BlockCacheUtil</a></dd>
</dl>
<hr>
<div class="type-signature"><span class="modifiers">public static class </span><span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.html#line-294">BlockCacheUtil.CachedBlocksByFile</a></span>
<span class="extends-implements">extends <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></span></div>
<div class="block">Use one of these to keep a running account of cached blocks by file. Throw it away when done.
This is different than metrics in that it is stats on current state of a cache. See
getLoadedCachedBlocksByFile</div>
</section>
<section class="summary">
<ul class="summary-list">
<!-- =========== FIELD SUMMARY =========== -->
<li>
<section class="field-summary" id="field-summary">
<h2>Field Summary</h2>
<div class="caption"><span>Fields</span></div>
<div class="summary-table three-column-summary">
<div class="table-header col-first">Modifier and Type</div>
<div class="table-header col-second">Field</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color"><code>private <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/NavigableMap.html" title="class or interface in java.util" class="external-link">NavigableMap</a>&lt;<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/NavigableSet.html" title="class or interface in java.util" class="external-link">NavigableSet</a>&lt;<a href="CachedBlock.html" title="interface in org.apache.hadoop.hbase.io.hfile">CachedBlock</a>&gt;&gt;</code></div>
<div class="col-second even-row-color"><code><a href="#cachedBlockByFile" class="member-name-link">cachedBlockByFile</a></code></div>
<div class="col-last even-row-color">
<div class="block">Map by filename.</div>
</div>
<div class="col-first odd-row-color"><code>private int</code></div>
<div class="col-second odd-row-color"><code><a href="#count" class="member-name-link">count</a></code></div>
<div class="col-last odd-row-color">&nbsp;</div>
<div class="col-first even-row-color"><code>private int</code></div>
<div class="col-second even-row-color"><code><a href="#dataBlockCount" class="member-name-link">dataBlockCount</a></code></div>
<div class="col-last even-row-color">&nbsp;</div>
<div class="col-first odd-row-color"><code>private long</code></div>
<div class="col-second odd-row-color"><code><a href="#dataSize" class="member-name-link">dataSize</a></code></div>
<div class="col-last odd-row-color">&nbsp;</div>
<div class="col-first even-row-color"><code>(package private) <a href="../../metrics/impl/FastLongHistogram.html" title="class in org.apache.hadoop.hbase.metrics.impl">FastLongHistogram</a></code></div>
<div class="col-second even-row-color"><code><a href="#hist" class="member-name-link">hist</a></code></div>
<div class="col-last even-row-color">&nbsp;</div>
<div class="col-first odd-row-color"><code>private final int</code></div>
<div class="col-second odd-row-color"><code><a href="#max" class="member-name-link">max</a></code></div>
<div class="col-last odd-row-color">
<div class="block">How many blocks to look at before we give up.</div>
</div>
<div class="col-first even-row-color"><code>private final long</code></div>
<div class="col-second even-row-color"><code><a href="#now" class="member-name-link">now</a></code></div>
<div class="col-last even-row-color">&nbsp;</div>
<div class="col-first odd-row-color"><code>private long</code></div>
<div class="col-second odd-row-color"><code><a href="#size" class="member-name-link">size</a></code></div>
<div class="col-last odd-row-color">&nbsp;</div>
</div>
</section>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<section class="constructor-summary" id="constructor-summary">
<h2>Constructor Summary</h2>
<div class="caption"><span>Constructors</span></div>
<div class="summary-table two-column-summary">
<div class="table-header col-first">Constructor</div>
<div class="table-header col-last">Description</div>
<div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E()" class="member-name-link">CachedBlocksByFile</a>()</code></div>
<div class="col-last even-row-color">&nbsp;</div>
<div class="col-constructor-name odd-row-color"><code><a href="#%3Cinit%3E(org.apache.hadoop.conf.Configuration)" class="member-name-link">CachedBlocksByFile</a><wbr>(org.apache.hadoop.conf.Configuration&nbsp;c)</code></div>
<div class="col-last odd-row-color">&nbsp;</div>
</div>
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<div class="table-header col-first">Modifier and Type</div>
<div class="table-header col-second">Method</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="AgeSnapshot.html" title="class in org.apache.hadoop.hbase.io.hfile">AgeSnapshot</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getAgeInCacheSnapshot()" class="member-name-link">getAgeInCacheSnapshot</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/NavigableMap.html" title="class or interface in java.util" class="external-link">NavigableMap</a>&lt;<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/NavigableSet.html" title="class or interface in java.util" class="external-link">NavigableSet</a>&lt;<a href="CachedBlock.html" title="interface in org.apache.hadoop.hbase.io.hfile">CachedBlock</a>&gt;&gt;</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getCachedBlockStatsByFile()" class="member-name-link">getCachedBlockStatsByFile</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>int</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getCount()" class="member-name-link">getCount</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Returns count of blocks in the cache</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>int</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getDataCount()" class="member-name-link">getDataCount</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>long</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getDataSize()" class="member-name-link">getDataSize</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Returns Size of data.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>long</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getSize()" class="member-name-link">getSize</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Returns size of blocks in the cache</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#isFull()" class="member-name-link">isFull</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#toString()" class="member-name-link">toString</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#update(org.apache.hadoop.hbase.io.hfile.CachedBlock)" class="member-name-link">update</a><wbr>(<a href="CachedBlock.html" title="interface in org.apache.hadoop.hbase.io.hfile">CachedBlock</a>&nbsp;cb)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Returns True if full....</div>
</div>
</div>
</div>
</div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3>
<code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div>
</section>
</li>
</ul>
</section>
<section class="details">
<ul class="details-list">
<!-- ============ FIELD DETAIL =========== -->
<li>
<section class="field-details" id="field-detail">
<h2>Field Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="count">
<h3>count</h3>
<div class="member-signature"><span class="modifiers">private</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-295">count</a></span></div>
</section>
</li>
<li>
<section class="detail" id="dataBlockCount">
<h3>dataBlockCount</h3>
<div class="member-signature"><span class="modifiers">private</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-296">dataBlockCount</a></span></div>
</section>
</li>
<li>
<section class="detail" id="size">
<h3>size</h3>
<div class="member-signature"><span class="modifiers">private</span>&nbsp;<span class="return-type">long</span>&nbsp;<span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-297">size</a></span></div>
</section>
</li>
<li>
<section class="detail" id="dataSize">
<h3>dataSize</h3>
<div class="member-signature"><span class="modifiers">private</span>&nbsp;<span class="return-type">long</span>&nbsp;<span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-298">dataSize</a></span></div>
</section>
</li>
<li>
<section class="detail" id="now">
<h3>now</h3>
<div class="member-signature"><span class="modifiers">private final</span>&nbsp;<span class="return-type">long</span>&nbsp;<span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-299">now</a></span></div>
</section>
</li>
<li>
<section class="detail" id="max">
<h3>max</h3>
<div class="member-signature"><span class="modifiers">private final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-305">max</a></span></div>
<div class="block">How many blocks to look at before we give up. There could be many millions of blocks. We
don't want the ui to freeze while we run through 1B blocks... users will think hbase dead. UI
displays warning in red when stats are incomplete.</div>
</section>
</li>
<li>
<section class="detail" id="cachedBlockByFile">
<h3>cachedBlockByFile</h3>
<div class="member-signature"><span class="modifiers">private transient</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/NavigableMap.html" title="class or interface in java.util" class="external-link">NavigableMap</a>&lt;<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/NavigableSet.html" title="class or interface in java.util" class="external-link">NavigableSet</a>&lt;<a href="CachedBlock.html" title="interface in org.apache.hadoop.hbase.io.hfile">CachedBlock</a>&gt;&gt;</span>&nbsp;<span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-318">cachedBlockByFile</a></span></div>
<div class="block">Map by filename. use concurent utils because we want our Map and contained blocks sorted.</div>
</section>
</li>
<li>
<section class="detail" id="hist">
<h3>hist</h3>
<div class="member-signature"><span class="return-type"><a href="../../metrics/impl/FastLongHistogram.html" title="class in org.apache.hadoop.hbase.metrics.impl">FastLongHistogram</a></span>&nbsp;<span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-320">hist</a></span></div>
</section>
</li>
</ul>
</section>
</li>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<li>
<section class="constructor-details" id="constructor-detail">
<h2>Constructor Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="&lt;init&gt;()">
<h3>CachedBlocksByFile</h3>
<div class="member-signature"><span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-307">CachedBlocksByFile</a></span>()</div>
</section>
</li>
<li>
<section class="detail" id="&lt;init&gt;(org.apache.hadoop.conf.Configuration)">
<h3>CachedBlocksByFile</h3>
<div class="member-signature"><span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-311">CachedBlocksByFile</a></span><wbr><span class="parameters">(org.apache.hadoop.conf.Configuration&nbsp;c)</span></div>
</section>
</li>
</ul>
</section>
</li>
<!-- ============ METHOD DETAIL ========== -->
<li>
<section class="method-details" id="method-detail">
<h2>Method Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="update(org.apache.hadoop.hbase.io.hfile.CachedBlock)">
<h3>update</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-323">update</a></span><wbr><span class="parameters">(<a href="CachedBlock.html" title="interface in org.apache.hadoop.hbase.io.hfile">CachedBlock</a>&nbsp;cb)</span></div>
<div class="block">Returns True if full.... if we won't be adding any more.</div>
</section>
</li>
<li>
<section class="detail" id="isFull()">
<h3>isFull</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-348">isFull</a></span>()</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>True if full; i.e. there are more items in the cache but we only loaded up the
maximum set in configuration <code>hbase.ui.blockcache.by.file.max</code> (Default:
DEFAULT_MAX).</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getCachedBlockStatsByFile()">
<h3>getCachedBlockStatsByFile</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/NavigableMap.html" title="class or interface in java.util" class="external-link">NavigableMap</a>&lt;<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/NavigableSet.html" title="class or interface in java.util" class="external-link">NavigableSet</a>&lt;<a href="CachedBlock.html" title="interface in org.apache.hadoop.hbase.io.hfile">CachedBlock</a>&gt;&gt;</span>&nbsp;<span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-352">getCachedBlockStatsByFile</a></span>()</div>
</section>
</li>
<li>
<section class="detail" id="getCount()">
<h3>getCount</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-357">getCount</a></span>()</div>
<div class="block">Returns count of blocks in the cache</div>
</section>
</li>
<li>
<section class="detail" id="getDataCount()">
<h3>getDataCount</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-361">getDataCount</a></span>()</div>
</section>
</li>
<li>
<section class="detail" id="getSize()">
<h3>getSize</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">long</span>&nbsp;<span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-366">getSize</a></span>()</div>
<div class="block">Returns size of blocks in the cache</div>
</section>
</li>
<li>
<section class="detail" id="getDataSize()">
<h3>getDataSize</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">long</span>&nbsp;<span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-371">getDataSize</a></span>()</div>
<div class="block">Returns Size of data.</div>
</section>
</li>
<li>
<section class="detail" id="getAgeInCacheSnapshot()">
<h3>getAgeInCacheSnapshot</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="AgeSnapshot.html" title="class in org.apache.hadoop.hbase.io.hfile">AgeSnapshot</a></span>&nbsp;<span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-375">getAgeInCacheSnapshot</a></span>()</div>
</section>
</li>
<li>
<section class="detail" id="toString()">
<h3>toString</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></span>&nbsp;<span class="element-name"><a href="../../../../../../src-html/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.CachedBlocksByFile.html#line-379">toString</a></span>()</div>
<dl class="notes">
<dt>Overrides:</dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a></code>&nbsp;in class&nbsp;<code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></code></dd>
</dl>
</section>
</li>
</ul>
</section>
</li>
</ul>
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