api/jdk16/openj9.dtfj/com/ibm/dtfj/java/JavaReference.html - www.eclipse.org/openj9/docs - Git at Google

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 <meta name="keywords" content="HEAP_ROOT_CLASSLOADER">
 <meta name="keywords" content="HEAP_ROOT_STRINGTABLE">
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 <meta name="keywords" content="REFERENCE_CLASS">
 <meta name="keywords" content="REFERENCE_FIELD">
 <meta name="keywords" content="REFERENCE_ARRAY_ELEMENT">
 <meta name="keywords" content="REFERENCE_CLASS_LOADER">
 <meta name="keywords" content="REFERENCE_SIGNERS">
 <meta name="keywords" content="REFERENCE_PROTECTION_DOMAIN">
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 <meta name="keywords" content="REACHABILITY_WEAK">
 <meta name="keywords" content="REACHABILITY_PHANTOM">
 <meta name="keywords" content="getRootType()">
 <meta name="keywords" content="getReferenceType()">
 <meta name="keywords" content="getReachability()">
 <meta name="keywords" content="getDescription()">
 <meta name="keywords" content="isObjectReference()">
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 <div class="sub-title"><span class="module-label-in-type">Module</span>&nbsp;<a href="../../../../module-summary.html">openj9.dtfj</a></div>
 <div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">com.ibm.dtfj.java</a></div>
 <h1 title="Interface JavaReference" class="title">Interface JavaReference</h1>
 </div>
 <section class="description">
 <dl class="notes">
 <dt>All Known Implementing Classes:</dt>
 <dd><code><a href="../../j9ddr/vm29/view/dtfj/java/DTFJJavaReference.html" title="class in com.ibm.j9ddr.vm29.view.dtfj.java">DTFJJavaReference</a></code>, <code><a href="j9/JavaReference.html" title="class in com.ibm.dtfj.java.j9">JavaReference</a></code></dd>
 </dl>
 <hr>
 <div class="type-signature"><span class="modifiers">public interface </span><span class="element-name type-name-label">JavaReference</span></div>
 <div class="block">Represents a Java reference.</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>static int</code></div>
 <div class="col-second even-row-color"><code><span class="member-name-link"><a href="#HEAP_ROOT_CLASSLOADER">HEAP_ROOT_CLASSLOADER</a></span></code></div>
 <div class="col-last even-row-color">
 <div class="block">Classloader heap root</div>
 </div>
 <div class="col-first odd-row-color"><code>static int</code></div>
 <div class="col-second odd-row-color"><code><span class="member-name-link"><a href="#HEAP_ROOT_FINALIZABLE_OBJ">HEAP_ROOT_FINALIZABLE_OBJ</a></span></code></div>
 <div class="col-last odd-row-color">
 <div class="block">Finalizable object heap root</div>
 </div>
 <div class="col-first even-row-color"><code>static int</code></div>
 <div class="col-second even-row-color"><code><span class="member-name-link"><a href="#HEAP_ROOT_JNI_GLOBAL">HEAP_ROOT_JNI_GLOBAL</a></span></code></div>
 <div class="col-last even-row-color">
 <div class="block">JNI global reference heap root</div>
 </div>
 <div class="col-first odd-row-color"><code>static int</code></div>
 <div class="col-second odd-row-color"><code><span class="member-name-link"><a href="#HEAP_ROOT_JNI_LOCAL">HEAP_ROOT_JNI_LOCAL</a></span></code></div>
 <div class="col-last odd-row-color">
 <div class="block">JNI local reference heap root</div>
 </div>
 <div class="col-first even-row-color"><code>static int</code></div>
 <div class="col-second even-row-color"><code><span class="member-name-link"><a href="#HEAP_ROOT_MONITOR">HEAP_ROOT_MONITOR</a></span></code></div>
 <div class="col-last even-row-color">
 <div class="block">Monitor heap root</div>
 </div>
 <div class="col-first odd-row-color"><code>static int</code></div>
 <div class="col-second odd-row-color"><code><span class="member-name-link"><a href="#HEAP_ROOT_OTHER">HEAP_ROOT_OTHER</a></span></code></div>
 <div class="col-last odd-row-color">
 <div class="block">Other heap root type</div>
 </div>
 <div class="col-first even-row-color"><code>static int</code></div>
 <div class="col-second even-row-color"><code><span class="member-name-link"><a href="#HEAP_ROOT_STACK_LOCAL">HEAP_ROOT_STACK_LOCAL</a></span></code></div>
 <div class="col-last even-row-color">
 <div class="block">Stack local heap root</div>
 </div>
 <div class="col-first odd-row-color"><code>static int</code></div>
 <div class="col-second odd-row-color"><code><span class="member-name-link"><a href="#HEAP_ROOT_STRINGTABLE">HEAP_ROOT_STRINGTABLE</a></span></code></div>
 <div class="col-last odd-row-color">
 <div class="block">Stringtable heap root</div>
 </div>
 <div class="col-first even-row-color"><code>static int</code></div>
 <div class="col-second even-row-color"><code><span class="member-name-link"><a href="#HEAP_ROOT_SYSTEM_CLASS">HEAP_ROOT_SYSTEM_CLASS</a></span></code></div>
 <div class="col-last even-row-color">
 <div class="block">System class heap root</div>
 </div>
 <div class="col-first odd-row-color"><code>static int</code></div>
 <div class="col-second odd-row-color"><code><span class="member-name-link"><a href="#HEAP_ROOT_THREAD">HEAP_ROOT_THREAD</a></span></code></div>
 <div class="col-last odd-row-color">
 <div class="block">Thread heap root</div>
 </div>
 <div class="col-first even-row-color"><code>static int</code></div>
 <div class="col-second even-row-color"><code><span class="member-name-link"><a href="#HEAP_ROOT_UNFINALIZED_OBJ">HEAP_ROOT_UNFINALIZED_OBJ</a></span></code></div>
 <div class="col-last even-row-color">
 <div class="block">Unfinalized object heap root</div>
 </div>
 <div class="col-first odd-row-color"><code>static int</code></div>
 <div class="col-second odd-row-color"><code><span class="member-name-link"><a href="#HEAP_ROOT_UNKNOWN">HEAP_ROOT_UNKNOWN</a></span></code></div>
 <div class="col-last odd-row-color">
 <div class="block">Unknown heap root type</div>
 </div>
 <div class="col-first even-row-color"><code>static int</code></div>
 <div class="col-second even-row-color"><code><span class="member-name-link"><a href="#REACHABILITY_PHANTOM">REACHABILITY_PHANTOM</a></span></code></div>
 <div class="col-last even-row-color">
 <div class="block">Reachability of target object via this reference is Phantom</div>
 </div>
 <div class="col-first odd-row-color"><code>static int</code></div>
 <div class="col-second odd-row-color"><code><span class="member-name-link"><a href="#REACHABILITY_SOFT">REACHABILITY_SOFT</a></span></code></div>
 <div class="col-last odd-row-color">
 <div class="block">Reachability of target object via this reference is Soft</div>
 </div>
 <div class="col-first even-row-color"><code>static int</code></div>
 <div class="col-second even-row-color"><code><span class="member-name-link"><a href="#REACHABILITY_STRONG">REACHABILITY_STRONG</a></span></code></div>
 <div class="col-last even-row-color">
 <div class="block">Reachability of target object via this reference is Strong</div>
 </div>
 <div class="col-first odd-row-color"><code>static int</code></div>
 <div class="col-second odd-row-color"><code><span class="member-name-link"><a href="#REACHABILITY_UNKNOWN">REACHABILITY_UNKNOWN</a></span></code></div>
 <div class="col-last odd-row-color">
 <div class="block">Reachability of target object via this reference is unknown</div>
 </div>
 <div class="col-first even-row-color"><code>static int</code></div>
 <div class="col-second even-row-color"><code><span class="member-name-link"><a href="#REACHABILITY_WEAK">REACHABILITY_WEAK</a></span></code></div>
 <div class="col-last even-row-color">
 <div class="block">Reachability of target object via this reference is Weak</div>
 </div>
 <div class="col-first odd-row-color"><code>static int</code></div>
 <div class="col-second odd-row-color"><code><span class="member-name-link"><a href="#REFERENCE_ARRAY_ELEMENT">REFERENCE_ARRAY_ELEMENT</a></span></code></div>
 <div class="col-last odd-row-color">
 <div class="block">Reference from an array to one of its elements</div>
 </div>
 <div class="col-first even-row-color"><code>static int</code></div>
 <div class="col-second even-row-color"><code><span class="member-name-link"><a href="#REFERENCE_ASSOCIATED_CLASS">REFERENCE_ASSOCIATED_CLASS</a></span></code></div>
 <div class="col-last even-row-color">
 <div class="block">Reference from a JavaObject representing a Class to the associated JavaClass</div>
 </div>
 <div class="col-first odd-row-color"><code>static int</code></div>
 <div class="col-second odd-row-color"><code><span class="member-name-link"><a href="#REFERENCE_CLASS">REFERENCE_CLASS</a></span></code></div>
 <div class="col-last odd-row-color">
 <div class="block">Reference from an object to its class</div>
 </div>
 <div class="col-first even-row-color"><code>static int</code></div>
 <div class="col-second even-row-color"><code><span class="member-name-link"><a href="#REFERENCE_CLASS_LOADER">REFERENCE_CLASS_LOADER</a></span></code></div>
 <div class="col-last even-row-color">
 <div class="block">Reference from a class to its class loader</div>
 </div>
 <div class="col-first odd-row-color"><code>static int</code></div>
 <div class="col-second odd-row-color"><code><span class="member-name-link"><a href="#REFERENCE_CLASS_OBJECT">REFERENCE_CLASS_OBJECT</a></span></code></div>
 <div class="col-last odd-row-color">
 <div class="block">Reference from a class to its java.lang.Class instance</div>
 </div>
 <div class="col-first even-row-color"><code>static int</code></div>
 <div class="col-second even-row-color"><code><span class="member-name-link"><a href="#REFERENCE_CONSTANT_POOL">REFERENCE_CONSTANT_POOL</a></span></code></div>
 <div class="col-last even-row-color">
 <div class="block">Reference from a class to a resolved entry in the constant pool</div>
 </div>
 <div class="col-first odd-row-color"><code>static int</code></div>
 <div class="col-second odd-row-color"><code><span class="member-name-link"><a href="#REFERENCE_FIELD">REFERENCE_FIELD</a></span></code></div>
 <div class="col-last odd-row-color">
 <div class="block">Reference from an object to the value of one of its instance fields</div>
 </div>
 <div class="col-first even-row-color"><code>static int</code></div>
 <div class="col-second even-row-color"><code><span class="member-name-link"><a href="#REFERENCE_INTERFACE">REFERENCE_INTERFACE</a></span></code></div>
 <div class="col-last even-row-color">
 <div class="block">Reference from a class to one of its interfaces</div>
 </div>
 <div class="col-first odd-row-color"><code>static int</code></div>
 <div class="col-second odd-row-color"><code><span class="member-name-link"><a href="#REFERENCE_LOADED_CLASS">REFERENCE_LOADED_CLASS</a></span></code></div>
 <div class="col-last odd-row-color">
 <div class="block">Reference from a classloader object to its loaded classes</div>
 </div>
 <div class="col-first even-row-color"><code>static int</code></div>
 <div class="col-second even-row-color"><code><span class="member-name-link"><a href="#REFERENCE_PROTECTION_DOMAIN">REFERENCE_PROTECTION_DOMAIN</a></span></code></div>
 <div class="col-last even-row-color">
 <div class="block">Reference from a class to its protection domain</div>
 </div>
 <div class="col-first odd-row-color"><code>static int</code></div>
 <div class="col-second odd-row-color"><code><span class="member-name-link"><a href="#REFERENCE_SIGNERS">REFERENCE_SIGNERS</a></span></code></div>
 <div class="col-last odd-row-color">
 <div class="block">Reference from a class to its signers array</div>
 </div>
 <div class="col-first even-row-color"><code>static int</code></div>
 <div class="col-second even-row-color"><code><span class="member-name-link"><a href="#REFERENCE_STATIC_FIELD">REFERENCE_STATIC_FIELD</a></span></code></div>
 <div class="col-last even-row-color">
 <div class="block">Reference from a class to the value of one of its static fields</div>
 </div>
 <div class="col-first odd-row-color"><code>static int</code></div>
 <div class="col-second odd-row-color"><code><span class="member-name-link"><a href="#REFERENCE_SUPERCLASS">REFERENCE_SUPERCLASS</a></span></code></div>
 <div class="col-last odd-row-color">
 <div class="block">Reference from a class to its superclass</div>
 </div>
 <div class="col-first even-row-color"><code>static int</code></div>
 <div class="col-second even-row-color"><code><span class="member-name-link"><a href="#REFERENCE_UNKNOWN">REFERENCE_UNKNOWN</a></span></code></div>
 <div class="col-last even-row-color">
 <div class="block">Unknown reference type</div>
 </div>
 <div class="col-first odd-row-color"><code>static int</code></div>
 <div class="col-second odd-row-color"><code><span class="member-name-link"><a href="#REFERENCE_UNUSED_14">REFERENCE_UNUSED_14</a></span></code></div>
 <div class="col-last odd-row-color">&nbsp;</div>
 </div>
 </section>
 </li>
 <!-- ========== METHOD SUMMARY =========== -->
 <li>
 <section class="method-summary" id="method.summary">
 <h2>Method Summary</h2>
 <div id="method-summary-table">
 <div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab3" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab3', 3)" class="table-tab">Abstract Methods</button></div>
 <div id="method-summary-table.tabpanel" role="tabpanel">
 <div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0">
 <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-tab2 method-summary-table method-summary-table-tab3"><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link" target="_blank">String</a></code></div>
 <div class="col-second even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getDescription()">getDescription</a></span>()</code></div>
 <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3">
 <div class="block">Get a string describing the reference type.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>int</code></div>
 <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getReachability()">getReachability</a></span>()</code></div>
 <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3">
 <div class="block">Get the reachability of the target object via this specific reference.</div>
 </div>
 <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>int</code></div>
 <div class="col-second even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getReferenceType()">getReferenceType</a></span>()</code></div>
 <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3">
 <div class="block">Get the reference type, as defined in the JVMTI specification.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>int</code></div>
 <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getRootType()">getRootType</a></span>()</code></div>
 <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3">
 <div class="block">Get the root type, as defined in the JVMTI specification.</div>
 </div>
 <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link" target="_blank">Object</a></code></div>
 <div class="col-second even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getSource()">getSource</a></span>()</code></div>
 <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3">
 <div class="block">Get the source of this reference if available.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link" target="_blank">Object</a></code></div>
 <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#getTarget()">getTarget</a></span>()</code></div>
 <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3">
 <div class="block">Get the object referred to by this reference.</div>
 </div>
 <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>boolean</code></div>
 <div class="col-second even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#isClassReference()">isClassReference</a></span>()</code></div>
 <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3">
 <div class="block">Does this reference point to a class?</div>
 </div>
 <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code>boolean</code></div>
 <div class="col-second odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><span class="member-name-link"><a href="#isObjectReference()">isObjectReference</a></span>()</code></div>
 <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3">
 <div class="block">Does this reference point to an object in the heap?</div>
 </div>
 </div>
 </div>
 </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="HEAP_ROOT_UNKNOWN">
 <h3>HEAP_ROOT_UNKNOWN</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">HEAP_ROOT_UNKNOWN</span></div>
 <div class="block">Unknown heap root type</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.HEAP_ROOT_UNKNOWN">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="HEAP_ROOT_JNI_GLOBAL">
 <h3>HEAP_ROOT_JNI_GLOBAL</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">HEAP_ROOT_JNI_GLOBAL</span></div>
 <div class="block">JNI global reference heap root</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.HEAP_ROOT_JNI_GLOBAL">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="HEAP_ROOT_SYSTEM_CLASS">
 <h3>HEAP_ROOT_SYSTEM_CLASS</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">HEAP_ROOT_SYSTEM_CLASS</span></div>
 <div class="block">System class heap root</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.HEAP_ROOT_SYSTEM_CLASS">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="HEAP_ROOT_MONITOR">
 <h3>HEAP_ROOT_MONITOR</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">HEAP_ROOT_MONITOR</span></div>
 <div class="block">Monitor heap root</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.HEAP_ROOT_MONITOR">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="HEAP_ROOT_STACK_LOCAL">
 <h3>HEAP_ROOT_STACK_LOCAL</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">HEAP_ROOT_STACK_LOCAL</span></div>
 <div class="block">Stack local heap root</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.HEAP_ROOT_STACK_LOCAL">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="HEAP_ROOT_JNI_LOCAL">
 <h3>HEAP_ROOT_JNI_LOCAL</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">HEAP_ROOT_JNI_LOCAL</span></div>
 <div class="block">JNI local reference heap root</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.HEAP_ROOT_JNI_LOCAL">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="HEAP_ROOT_THREAD">
 <h3>HEAP_ROOT_THREAD</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">HEAP_ROOT_THREAD</span></div>
 <div class="block">Thread heap root</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.HEAP_ROOT_THREAD">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="HEAP_ROOT_OTHER">
 <h3>HEAP_ROOT_OTHER</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">HEAP_ROOT_OTHER</span></div>
 <div class="block">Other heap root type</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.HEAP_ROOT_OTHER">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="HEAP_ROOT_FINALIZABLE_OBJ">
 <h3>HEAP_ROOT_FINALIZABLE_OBJ</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">HEAP_ROOT_FINALIZABLE_OBJ</span></div>
 <div class="block">Finalizable object heap root</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.HEAP_ROOT_FINALIZABLE_OBJ">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="HEAP_ROOT_UNFINALIZED_OBJ">
 <h3>HEAP_ROOT_UNFINALIZED_OBJ</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">HEAP_ROOT_UNFINALIZED_OBJ</span></div>
 <div class="block">Unfinalized object heap root</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.HEAP_ROOT_UNFINALIZED_OBJ">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="HEAP_ROOT_CLASSLOADER">
 <h3>HEAP_ROOT_CLASSLOADER</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">HEAP_ROOT_CLASSLOADER</span></div>
 <div class="block">Classloader heap root</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.HEAP_ROOT_CLASSLOADER">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="HEAP_ROOT_STRINGTABLE">
 <h3>HEAP_ROOT_STRINGTABLE</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">HEAP_ROOT_STRINGTABLE</span></div>
 <div class="block">Stringtable heap root</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.HEAP_ROOT_STRINGTABLE">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REFERENCE_UNKNOWN">
 <h3>REFERENCE_UNKNOWN</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REFERENCE_UNKNOWN</span></div>
 <div class="block">Unknown reference type</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REFERENCE_UNKNOWN">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REFERENCE_CLASS">
 <h3>REFERENCE_CLASS</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REFERENCE_CLASS</span></div>
 <div class="block">Reference from an object to its class</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REFERENCE_CLASS">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REFERENCE_FIELD">
 <h3>REFERENCE_FIELD</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REFERENCE_FIELD</span></div>
 <div class="block">Reference from an object to the value of one of its instance fields</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REFERENCE_FIELD">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REFERENCE_ARRAY_ELEMENT">
 <h3>REFERENCE_ARRAY_ELEMENT</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REFERENCE_ARRAY_ELEMENT</span></div>
 <div class="block">Reference from an array to one of its elements</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REFERENCE_ARRAY_ELEMENT">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REFERENCE_CLASS_LOADER">
 <h3>REFERENCE_CLASS_LOADER</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REFERENCE_CLASS_LOADER</span></div>
 <div class="block">Reference from a class to its class loader</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REFERENCE_CLASS_LOADER">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REFERENCE_SIGNERS">
 <h3>REFERENCE_SIGNERS</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REFERENCE_SIGNERS</span></div>
 <div class="block">Reference from a class to its signers array</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REFERENCE_SIGNERS">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REFERENCE_PROTECTION_DOMAIN">
 <h3>REFERENCE_PROTECTION_DOMAIN</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REFERENCE_PROTECTION_DOMAIN</span></div>
 <div class="block">Reference from a class to its protection domain</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REFERENCE_PROTECTION_DOMAIN">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REFERENCE_INTERFACE">
 <h3>REFERENCE_INTERFACE</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REFERENCE_INTERFACE</span></div>
 <div class="block">Reference from a class to one of its interfaces</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REFERENCE_INTERFACE">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REFERENCE_STATIC_FIELD">
 <h3>REFERENCE_STATIC_FIELD</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REFERENCE_STATIC_FIELD</span></div>
 <div class="block">Reference from a class to the value of one of its static fields</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REFERENCE_STATIC_FIELD">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REFERENCE_CONSTANT_POOL">
 <h3>REFERENCE_CONSTANT_POOL</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REFERENCE_CONSTANT_POOL</span></div>
 <div class="block">Reference from a class to a resolved entry in the constant pool</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REFERENCE_CONSTANT_POOL">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REFERENCE_SUPERCLASS">
 <h3>REFERENCE_SUPERCLASS</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REFERENCE_SUPERCLASS</span></div>
 <div class="block">Reference from a class to its superclass</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REFERENCE_SUPERCLASS">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REFERENCE_LOADED_CLASS">
 <h3>REFERENCE_LOADED_CLASS</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REFERENCE_LOADED_CLASS</span></div>
 <div class="block">Reference from a classloader object to its loaded classes</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REFERENCE_LOADED_CLASS">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REFERENCE_CLASS_OBJECT">
 <h3>REFERENCE_CLASS_OBJECT</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REFERENCE_CLASS_OBJECT</span></div>
 <div class="block">Reference from a class to its java.lang.Class instance</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REFERENCE_CLASS_OBJECT">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REFERENCE_ASSOCIATED_CLASS">
 <h3>REFERENCE_ASSOCIATED_CLASS</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REFERENCE_ASSOCIATED_CLASS</span></div>
 <div class="block">Reference from a JavaObject representing a Class to the associated JavaClass</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REFERENCE_ASSOCIATED_CLASS">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REFERENCE_UNUSED_14">
 <h3>REFERENCE_UNUSED_14</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REFERENCE_UNUSED_14</span></div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REFERENCE_UNUSED_14">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REACHABILITY_UNKNOWN">
 <h3>REACHABILITY_UNKNOWN</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REACHABILITY_UNKNOWN</span></div>
 <div class="block">Reachability of target object via this reference is unknown</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REACHABILITY_UNKNOWN">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REACHABILITY_STRONG">
 <h3>REACHABILITY_STRONG</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REACHABILITY_STRONG</span></div>
 <div class="block">Reachability of target object via this reference is Strong</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REACHABILITY_STRONG">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REACHABILITY_SOFT">
 <h3>REACHABILITY_SOFT</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REACHABILITY_SOFT</span></div>
 <div class="block">Reachability of target object via this reference is Soft</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REACHABILITY_SOFT">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REACHABILITY_WEAK">
 <h3>REACHABILITY_WEAK</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REACHABILITY_WEAK</span></div>
 <div class="block">Reachability of target object via this reference is Weak</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REACHABILITY_WEAK">Constant Field Values</a></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="REACHABILITY_PHANTOM">
 <h3>REACHABILITY_PHANTOM</h3>
 <div class="member-signature"><span class="modifiers">static final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">REACHABILITY_PHANTOM</span></div>
 <div class="block">Reachability of target object via this reference is Phantom</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd><a href="../../../../../constant-values.html#com.ibm.dtfj.java.JavaReference.REACHABILITY_PHANTOM">Constant Field Values</a></dd>
 </dl>
 </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="getRootType()">
 <h3>getRootType</h3>
 <div class="member-signature"><span class="return-type">int</span>&nbsp;<span class="element-name">getRootType</span>()
          throws <span class="exceptions"><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></span></div>
 <div class="block">Get the root type, as defined in the JVMTI specification.</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>an integer representing the root type, see HEAP_ROOT_ statics above.</dd>
 <dt>Throws:</dt>
 <dd><code><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></code></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getReferenceType()">
 <h3>getReferenceType</h3>
 <div class="member-signature"><span class="return-type">int</span>&nbsp;<span class="element-name">getReferenceType</span>()
               throws <span class="exceptions"><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></span></div>
 <div class="block">Get the reference type, as defined in the JVMTI specification.</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>an integer representing the reference type, see REFERENCE_ statics above.</dd>
 <dt>Throws:</dt>
 <dd><code><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></code></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getReachability()">
 <h3>getReachability</h3>
 <div class="member-signature"><span class="return-type">int</span>&nbsp;<span class="element-name">getReachability</span>()
              throws <span class="exceptions"><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></span></div>
 <div class="block">Get the reachability of the target object via this specific reference.</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>an integer representing the reachability, see REACHABILITY_ statics above.</dd>
 <dt>Throws:</dt>
 <dd><code><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></code></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getDescription()">
 <h3>getDescription</h3>
 <div class="member-signature"><span class="return-type"><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link" target="_blank">String</a></span>&nbsp;<span class="element-name">getDescription</span>()</div>
 <div class="block">Get a string describing the reference type.
  Implementers should not depend on the contents or identity of this string.
  e.g. "JNI Weak global reference", "Instance field 'MyClass.value'", "Constant pool string constant"</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>a String describing the reference type</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="isObjectReference()">
 <h3>isObjectReference</h3>
 <div class="member-signature"><span class="return-type">boolean</span>&nbsp;<span class="element-name">isObjectReference</span>()
                    throws <span class="exceptions"><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a>,
 <a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></span></div>
 <div class="block">Does this reference point to an object in the heap?</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>true if the target of this root is an object</dd>
 <dt>Throws:</dt>
 <dd><code><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a></code></dd>
 <dd><code><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></code></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="isClassReference()">
 <h3>isClassReference</h3>
 <div class="member-signature"><span class="return-type">boolean</span>&nbsp;<span class="element-name">isClassReference</span>()
                   throws <span class="exceptions"><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a>,
 <a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></span></div>
 <div class="block">Does this reference point to a class?</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>true if the target of this root is a class</dd>
 <dt>Throws:</dt>
 <dd><code><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a></code></dd>
 <dd><code><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></code></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getTarget()">
 <h3>getTarget</h3>
 <div class="member-signature"><span class="return-type"><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link" target="_blank">Object</a></span>&nbsp;<span class="element-name">getTarget</span>()
           throws <span class="exceptions"><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a>,
 <a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></span></div>
 <div class="block">Get the object referred to by this reference.</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>a JavaObject or a JavaClass</dd>
 <dt>Throws:</dt>
 <dd><code><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a></code></dd>
 <dd><code><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></code></dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getSource()">
 <h3>getSource</h3>
 <div class="member-signature"><span class="return-type"><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link" target="_blank">Object</a></span>&nbsp;<span class="element-name">getSource</span>()
           throws <span class="exceptions"><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a>,
 <a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></span></div>
 <div class="block">Get the source of this reference if available.</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>a JavaClass, JavaObject, JavaStackFrame or null if unknown</dd>
 <dt>Throws:</dt>
 <dd><code><a href="../image/DataUnavailable.html" title="class in com.ibm.dtfj.image">DataUnavailable</a></code></dd>
 <dd><code><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></code></dd>
 </dl>
 </section>
 </li>
 </ul>
 </section>
 </li>
 </ul>
 </section>
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