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<h2 title="Class J9DDRClassLoader" class="title">Class J9DDRClassLoader</h2>
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<pre>public class <span class="typeNameLabel">J9DDRClassLoader</span>
extends <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/security/SecureClassLoader.html?is-external=true" title="class or interface in java.security" class="externalLink" target="_blank">SecureClassLoader</a></pre>
<div class="block">This ClassLoader serves two purposes.
1) Based on partitioning rules and package namespaces it ensures that
certain classes are loaded once per runtime invocation while others
are loaded once per CORE file being inspected.
2) Generate bytecode at runtime based on the data in the core file (or
structure metadata file) for the J9 structure constants and offsets;
as well as pointer classes. These classes are explicitly loaded on a
per CORE file basis.
The isolation is accomplished by removing the Application Class Loader
from the class load delegation chain AND setting this class loader's
classpath to be equal to the Application class loader's classpath.
While the user may replace the application class loader with their own
implementation, the application class loader MUST be a subclass of
URLClassLoader.</div>
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<th class="colFirst" scope="col">Constructor</th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(com.ibm.j9ddr.StructureReader,java.lang.ClassLoader)">J9DDRClassLoader</a></span>&#8203;(<a href="StructureReader.html" title="class in com.ibm.j9ddr">StructureReader</a>&nbsp;reader,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">ClassLoader</a>&nbsp;parent)</code></th>
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<td class="colFirst"><code><a href="StructureHeader.html" title="class in com.ibm.j9ddr">StructureHeader</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getHeader()">getHeader</a></span>()</code></th>
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<td class="colFirst"><code><a href="IVMData.html" title="interface in com.ibm.j9ddr">IVMData</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getIVMData(com.ibm.j9ddr.corereaders.memory.IProcess,long)">getIVMData</a></span>&#8203;(<a href="corereaders/memory/IProcess.html" title="interface in com.ibm.j9ddr.corereaders.memory">IProcess</a>&nbsp;process,
long&nbsp;address)</code></th>
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<td class="colFirst"><code><a href="StructureReader.html" title="class in com.ibm.j9ddr">StructureReader</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getReader()">getReader</a></span>()</code></th>
<td class="colLast">
<div class="block">Get the structure reader used by this classloader.</div>
</td>
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<td class="colFirst"><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink" target="_blank">Collection</a>&lt;<a href="StructureReader.StructureDescriptor.html" title="class in com.ibm.j9ddr">StructureReader.StructureDescriptor</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getStructures()">getStructures</a></span>()</code></th>
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<td class="colFirst"><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">Class</a>&lt;?&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#loadClassRelativeToStream(java.lang.String,boolean)">loadClassRelativeToStream</a></span>&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">String</a>&nbsp;name,
boolean&nbsp;resolve)</code></th>
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<h3>Methods declared in class&nbsp;java.security.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/security/SecureClassLoader.html?is-external=true" title="class or interface in java.security" class="externalLink" target="_blank">SecureClassLoader</a></h3>
<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/security/SecureClassLoader.html?is-external=true#defineClass(java.lang.String,byte%5B%5D,int,int,java.security.CodeSource)" title="class or interface in java.security" class="externalLink" target="_blank">defineClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/security/SecureClassLoader.html?is-external=true#defineClass(java.lang.String,java.nio.ByteBuffer,java.security.CodeSource)" title="class or interface in java.security" class="externalLink" target="_blank">defineClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/security/SecureClassLoader.html?is-external=true#getPermissions(java.security.CodeSource)" title="class or interface in java.security" class="externalLink" target="_blank">getPermissions</a></code></li>
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<h3>Methods declared in class&nbsp;java.lang.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">ClassLoader</a></h3>
<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#clearAssertionStatus()" title="class or interface in java.lang" class="externalLink" target="_blank">clearAssertionStatus</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#clone()" title="class or interface in java.lang" class="externalLink" target="_blank">clone</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#defineClass(byte%5B%5D,int,int)" title="class or interface in java.lang" class="externalLink" target="_blank">defineClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#defineClass(java.lang.String,byte%5B%5D,int,int)" title="class or interface in java.lang" class="externalLink" target="_blank">defineClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#defineClass(java.lang.String,byte%5B%5D,int,int,java.security.ProtectionDomain)" title="class or interface in java.lang" class="externalLink" target="_blank">defineClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#defineClass(java.lang.String,java.nio.ByteBuffer,java.security.ProtectionDomain)" title="class or interface in java.lang" class="externalLink" target="_blank">defineClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#definePackage(java.lang.String,java.lang.String,java.lang.String,java.lang.String,java.lang.String,java.lang.String,java.lang.String,java.net.URL)" title="class or interface in java.lang" class="externalLink" target="_blank">definePackage</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#findClass(java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">findClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#findClass(java.lang.String,java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">findClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#findLibrary(java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">findLibrary</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#findLoadedClass(java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">findLoadedClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#findResource(java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">findResource</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#findResource(java.lang.String,java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">findResource</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#findResources(java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">findResources</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#findSystemClass(java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">findSystemClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#getClassLoadingLock(java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">getClassLoadingLock</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#getDefinedPackage(java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">getDefinedPackage</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#getDefinedPackages()" title="class or interface in java.lang" class="externalLink" target="_blank">getDefinedPackages</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#getName()" title="class or interface in java.lang" class="externalLink" target="_blank">getName</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#getPackage(java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">getPackage</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#getPackages()" title="class or interface in java.lang" class="externalLink" target="_blank">getPackages</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#getParent()" title="class or interface in java.lang" class="externalLink" target="_blank">getParent</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#getPlatformClassLoader()" title="class or interface in java.lang" class="externalLink" target="_blank">getPlatformClassLoader</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#getResource(java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">getResource</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#getResourceAsStream(java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">getResourceAsStream</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#getResources(java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">getResources</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#getSystemClassLoader()" title="class or interface in java.lang" class="externalLink" target="_blank">getSystemClassLoader</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#getSystemResource(java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">getSystemResource</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#getSystemResourceAsStream(java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">getSystemResourceAsStream</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#getSystemResources(java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">getSystemResources</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#getUnnamedModule()" title="class or interface in java.lang" class="externalLink" target="_blank">getUnnamedModule</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#isRegisteredAsParallelCapable()" title="class or interface in java.lang" class="externalLink" target="_blank">isRegisteredAsParallelCapable</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#loadClass(java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">loadClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#loadClass(java.lang.String,boolean)" title="class or interface in java.lang" class="externalLink" target="_blank">loadClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#registerAsParallelCapable()" title="class or interface in java.lang" class="externalLink" target="_blank">registerAsParallelCapable</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#resolveClass(java.lang.Class)" title="class or interface in java.lang" class="externalLink" target="_blank">resolveClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#resources(java.lang.String)" title="class or interface in java.lang" class="externalLink" target="_blank">resources</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#setClassAssertionStatus(java.lang.String,boolean)" title="class or interface in java.lang" class="externalLink" target="_blank">setClassAssertionStatus</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#setDefaultAssertionStatus(boolean)" title="class or interface in java.lang" class="externalLink" target="_blank">setDefaultAssertionStatus</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#setPackageAssertionStatus(java.lang.String,boolean)" title="class or interface in java.lang" class="externalLink" target="_blank">setPackageAssertionStatus</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true#setSigners(java.lang.Class,java.lang.Object%5B%5D)" title="class or interface in java.lang" class="externalLink" target="_blank">setSigners</a></code></li>
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<h3>Methods declared in class&nbsp;java.lang.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">Object</a></h3>
<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang" class="externalLink" target="_blank">equals</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink" target="_blank">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink" target="_blank">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang" class="externalLink" target="_blank">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink" target="_blank">notify</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink" target="_blank">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang" class="externalLink" target="_blank">toString</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink" target="_blank">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink" target="_blank">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink" target="_blank">wait</a></code></li>
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<h4>J9DDRClassLoader</h4>
<pre>public&nbsp;J9DDRClassLoader&#8203;(<a href="StructureReader.html" title="class in com.ibm.j9ddr">StructureReader</a>&nbsp;reader,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassLoader.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">ClassLoader</a>&nbsp;parent)</pre>
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<pre class="methodSignature">public&nbsp;<a href="StructureHeader.html" title="class in com.ibm.j9ddr">StructureHeader</a>&nbsp;getHeader()</pre>
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<pre class="methodSignature">public&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">Class</a>&lt;?&gt;&nbsp;loadClassRelativeToStream&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">String</a>&nbsp;name,
boolean&nbsp;resolve)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">ClassNotFoundException</a></pre>
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<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">ClassNotFoundException</a></code></dd>
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<pre class="methodSignature">public&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink" target="_blank">Collection</a>&lt;<a href="StructureReader.StructureDescriptor.html" title="class in com.ibm.j9ddr">StructureReader.StructureDescriptor</a>&gt;&nbsp;getStructures()</pre>
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<pre class="methodSignature">public&nbsp;<a href="IVMData.html" title="interface in com.ibm.j9ddr">IVMData</a>&nbsp;getIVMData&#8203;(<a href="corereaders/memory/IProcess.html" title="interface in com.ibm.j9ddr.corereaders.memory">IProcess</a>&nbsp;process,
long&nbsp;address)
throws <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">ClassNotFoundException</a>,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/IllegalAccessException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">IllegalAccessException</a>,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/InstantiationException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">InstantiationException</a></pre>
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<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">ClassNotFoundException</a></code></dd>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/IllegalAccessException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">IllegalAccessException</a></code></dd>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/InstantiationException.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">InstantiationException</a></code></dd>
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<h4>getReader</h4>
<pre class="methodSignature">public&nbsp;<a href="StructureReader.html" title="class in com.ibm.j9ddr">StructureReader</a>&nbsp;getReader()</pre>
<div class="block">Get the structure reader used by this classloader.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
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