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| <div class="sub-title"><span class="module-label-in-type">Module</span> <a href="../../../../module-summary.html">openj9.dtfj</a></div> |
| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">com.ibm.dtfj.java</a></div> |
| <h1 title="Interface JavaClassLoader" class="title">Interface JavaClassLoader</h1> |
| </div> |
| <section class="description"> |
| <dl class="notes"> |
| <dt>All Known Implementing Classes:</dt> |
| <dd><code><a href="../../j9ddr/vm29/view/dtfj/java/DTFJJavaClassloader.html" title="class in com.ibm.j9ddr.vm29.view.dtfj.java">DTFJJavaClassloader</a></code>, <code><a href="j9/JavaClassLoader.html" title="class in com.ibm.dtfj.java.j9">JavaClassLoader</a></code>, <code><a href="javacore/JCJavaClassLoader.html" title="class in com.ibm.dtfj.java.javacore">JCJavaClassLoader</a></code></dd> |
| </dl> |
| <hr> |
| <div class="type-signature"><span class="modifiers">public interface </span><span class="element-name type-name-label">JavaClassLoader</span></div> |
| <div class="block"><p>Represents an internal ClassLoader structure within a Java VM instance. |
| For most ClassLoaders there is a corresponding <code>java.lang.ClassLoader</code> |
| object within with JavaRuntime. For primordial class loaders such as |
| the bootstrap class loader, there may or may not be a corresponding |
| <code>java.lang.ClassLoader</code> instance.</p> |
| |
| <p>Since Java does not define any strict inheritance structure between |
| class loaders, there are no APIs for inspecting 'child' or 'parent' |
| class loaders. This information may be inferred by inspecting the |
| corresponding <code>java.lang.ClassLoader</code> instance.</p></div> |
| <dl class="notes"> |
| <dt>See Also:</dt> |
| <dd><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/ClassLoader.html" title="class or interface in java.lang" class="external-link" target="_blank"><code>ClassLoader</code></a></dd> |
| </dl> |
| </section> |
| <section class="summary"> |
| <ul class="summary-list"> |
| <!-- ========== 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>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="#equals(java.lang.Object)">equals</a></span>​(<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> obj)</code></div> |
| <div class="col-last even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Compares the argument to the receiver, and answers true |
| if they represent the <em>same</em> object using a class |
| specific comparison.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><a href="JavaClass.html" title="interface in com.ibm.dtfj.java">JavaClass</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="#findClass(java.lang.String)">findClass</a></span>​(<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> name)</code></div> |
| <div class="col-last odd-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"> |
| <div class="block">Find a named class within this class loader.</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/util/Iterator.html" title="class or interface in java.util" class="external-link" target="_blank">Iterator</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="#getCachedClasses()">getCachedClasses</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">When a ClassLoader successfully delegates a findClass() request to |
| another ClassLoader, the result of the delegation must be cached within |
| the internal structure so that the VM does not make repeated requests |
| for the same class.</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/util/Iterator.html" title="class or interface in java.util" class="external-link" target="_blank">Iterator</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="#getDefinedClasses()">getDefinedClasses</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 set of classes which are defined in this JavaClassLoader.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table-tab2 method-summary-table method-summary-table-tab3"><code><a href="JavaObject.html" title="interface in com.ibm.dtfj.java">JavaObject</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="#getObject()">getObject</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 java.lang.ClassLoader instance associated with this class loader.</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="#hashCode()">hashCode</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">Answers an integer hash code for the receiver.</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li> |
| <section class="method-details" id="method.detail"> |
| <h2>Method Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="getDefinedClasses()"> |
| <h3>getDefinedClasses</h3> |
| <div class="member-signature"><span class="return-type"><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/util/Iterator.html" title="class or interface in java.util" class="external-link" target="_blank">Iterator</a></span> <span class="element-name">getDefinedClasses</span>()</div> |
| <div class="block">Get the set of classes which are defined in this JavaClassLoader.</div> |
| <dl class="notes"> |
| <dt>Returns:</dt> |
| <dd>an iterator over the collection of classes which are defined |
| in this JavaClassLoader</dd> |
| <dt>See Also:</dt> |
| <dd><a href="JavaClass.html" title="interface in com.ibm.dtfj.java"><code>JavaClass</code></a>, |
| <a href="../image/CorruptData.html" title="interface in com.ibm.dtfj.image"><code>CorruptData</code></a></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getCachedClasses()"> |
| <h3>getCachedClasses</h3> |
| <div class="member-signature"><span class="return-type"><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/util/Iterator.html" title="class or interface in java.util" class="external-link" target="_blank">Iterator</a></span> <span class="element-name">getCachedClasses</span>()</div> |
| <div class="block">When a ClassLoader successfully delegates a findClass() request to |
| another ClassLoader, the result of the delegation must be cached within |
| the internal structure so that the VM does not make repeated requests |
| for the same class.</div> |
| <dl class="notes"> |
| <dt>Returns:</dt> |
| <dd>an iterator over the collection of classes which are defined |
| in this JavaClassLoader <i>or</i> which were found by delegation to |
| other JavaClassLoaders</dd> |
| <dt>See Also:</dt> |
| <dd><a href="JavaClass.html" title="interface in com.ibm.dtfj.java"><code>JavaClass</code></a>, |
| <a href="../image/CorruptData.html" title="interface in com.ibm.dtfj.image"><code>CorruptData</code></a></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="findClass(java.lang.String)"> |
| <h3>findClass</h3> |
| <div class="member-signature"><span class="return-type"><a href="JavaClass.html" title="interface in com.ibm.dtfj.java">JavaClass</a></span> <span class="element-name">findClass</span>​<span class="parameters">(<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> name)</span> |
| throws <span class="exceptions"><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></span></div> |
| <div class="block">Find a named class within this class loader. The class may have been |
| defined in this class loader, or this class loader may have delegated |
| the load to another class loader and cached the result.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>name</code> - of the class to find. Packages should be separated by |
| '/' instead of '.'</dd> |
| <dt>Returns:</dt> |
| <dd>the JavaClass instance, or null if it is not found</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="getObject()"> |
| <h3>getObject</h3> |
| <div class="member-signature"><span class="return-type"><a href="JavaObject.html" title="interface in com.ibm.dtfj.java">JavaObject</a></span> <span class="element-name">getObject</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 java.lang.ClassLoader instance associated with this class loader.</div> |
| <dl class="notes"> |
| <dt>Returns:</dt> |
| <dd>a JavaObject representing the java.lang.ClassLoader instance |
| associated with this class loader, or null if there is no Java class |
| loader associated with this low-level class loader.</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="../image/CorruptDataException.html" title="class in com.ibm.dtfj.image">CorruptDataException</a></code></dd> |
| <dt>See Also:</dt> |
| <dd><a href="JavaObject.html" title="interface in com.ibm.dtfj.java"><code>JavaObject</code></a>, |
| <a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/ClassLoader.html" title="class or interface in java.lang" class="external-link" target="_blank"><code>ClassLoader</code></a></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="equals(java.lang.Object)"> |
| <h3>equals</h3> |
| <div class="member-signature"><span class="return-type">boolean</span> <span class="element-name">equals</span>​<span class="parameters">(<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> obj)</span></div> |
| <div class="block"><span class="descfrm-type-label">Description copied from class: <code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link" target="_blank">java.lang.Object</a></code></span></div> |
| <div class="block">Compares the argument to the receiver, and answers true |
| if they represent the <em>same</em> object using a class |
| specific comparison. The implementation in Object answers |
| true only if the argument is the exact same object as the |
| receiver (==).</div> |
| <dl class="notes"> |
| <dt>Overrides:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link" target="_blank">equals</a></code> in class <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></dd> |
| <dt>Parameters:</dt> |
| <dd><code>obj</code> - </dd> |
| <dt>Returns:</dt> |
| <dd>True if the given object refers to the same Java Class Loader in the image</dd> |
| <dt>See Also:</dt> |
| <dd><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link" target="_blank"><code>Object.hashCode()</code></a></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="hashCode()"> |
| <h3>hashCode</h3> |
| <div class="member-signature"><span class="return-type">int</span> <span class="element-name">hashCode</span>()</div> |
| <div class="block"><span class="descfrm-type-label">Description copied from class: <code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link" target="_blank">java.lang.Object</a></code></span></div> |
| <div class="block">Answers an integer hash code for the receiver. Any two |
| objects which answer <code>true</code> when passed to |
| <code>.equals</code> must answer the same value for this |
| method.</div> |
| <dl class="notes"> |
| <dt>Overrides:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link" target="_blank">hashCode</a></code> in class <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></dd> |
| <dt>Returns:</dt> |
| <dd>the receiver's hash.</dd> |
| <dt>See Also:</dt> |
| <dd><a href="https://docs.oracle.com/en/java/javase/16/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link" target="_blank"><code>Object.equals(java.lang.Object)</code></a></dd> |
| </dl> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
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