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The future is now. Read Hardware inputs from devices plugged into a computer, cross-platform!
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jinput2.10/docs/javadoc/net/java/games/util/plugins/PluginLoader.html

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<!DOCTYPE HTML>
<html lang="en">
<head>
<!-- Generated by javadoc (17) on Wed Jun 22 19:05:48 UTC 2022 -->
<title>PluginLoader (jinput API)</title>
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<meta name="dc.created" content="2022-06-22">
<meta name="description" content="declaration: package: net.java.games.util.plugins, class: PluginLoader">
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<ul class="sub-nav-list">
<li>Summary:&nbsp;</li>
<li>Nested&nbsp;|&nbsp;</li>
<li>Field&nbsp;|&nbsp;</li>
<li><a href="#constructor-summary">Constr</a>&nbsp;|&nbsp;</li>
<li><a href="#method-summary">Method</a></li>
</ul>
<ul class="sub-nav-list">
<li>Detail:&nbsp;</li>
<li>Field&nbsp;|&nbsp;</li>
<li><a href="#constructor-detail">Constr</a>&nbsp;|&nbsp;</li>
<li><a href="#method-detail">Method</a></li>
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<!-- ======== START OF CLASS DATA ======== -->
<div class="header">
<div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">net.java.games.util.plugins</a></div>
<h1 title="Class PluginLoader" class="title">Class PluginLoader</h1>
</div>
<div class="inheritance" title="Inheritance Tree"><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a>
<div class="inheritance"><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html" title="class or interface in java.lang" class="external-link">java.lang.ClassLoader</a>
<div class="inheritance"><a href="http://docs.oracle.com/javase/8/docs/api/java/security/SecureClassLoader.html" title="class or interface in java.security" class="external-link">java.security.SecureClassLoader</a>
<div class="inheritance"><a href="http://docs.oracle.com/javase/8/docs/api/java/net/URLClassLoader.html" title="class or interface in java.net" class="external-link">java.net.URLClassLoader</a>
<div class="inheritance">net.java.games.util.plugins.PluginLoader</div>
</div>
</div>
</div>
</div>
<section class="class-description" id="class-description">
<dl class="notes">
<dt>All Implemented Interfaces:</dt>
<dd><code><a href="http://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html" title="class or interface in java.io" class="external-link">Closeable</a></code>, <code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html" title="class or interface in java.lang" class="external-link">AutoCloseable</a></code></dd>
</dl>
<hr>
<div class="type-signature"><span class="modifiers">public class </span><span class="element-name type-name-label">PluginLoader</span>
<span class="extends-implements">extends <a href="http://docs.oracle.com/javase/8/docs/api/java/net/URLClassLoader.html" title="class or interface in java.net" class="external-link">URLClassLoader</a></span></div>
<div class="block">This class is used internally by the Plugin system.
End users of the system are unlikely to need to be aware
of it.
This is the class loader used to keep the namespaces of
different plugins isolated from each other and from the
main app code. One plugin loader is created per Jar
file in the sub-directory tree of the plugin directory.
In addition to isolating java classes this loader also isolates
DLLs such that plugins with conflicting DLL names may be
used by simply placing the plugin and its associated DLL
in a sub-folder of its own.
This class also currently implements methods for testing
classes for inheritance of superclasses or interfaces.
This code is genericly useful and should really be moved
to a seperate ClassUtils class.</div>
</section>
<section class="summary">
<ul class="summary-list">
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
<li>
<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(java.io.File)" class="member-name-link">PluginLoader</a><wbr>(<a href="http://docs.oracle.com/javase/8/docs/api/java/io/File.html" title="class or interface in java.io" class="external-link">File</a>&nbsp;jf)</code></div>
<div class="col-last even-row-color">
<div class="block">Creates a new instance of PluginLodaer
If the system property "net.java.games.util.plugins.nolocalnative" is
not set then the laoder will look for requried native libs in the
same directory as the plugin jar.</div>
</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-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete 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 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="#attemptPluginDefine(java.lang.Class)" class="member-name-link">attemptPluginDefine</a><wbr>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Class.html" title="class or interface in java.lang" class="external-link">Class</a>&nbsp;pc)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">This function is called as part of scanning the Jar for
plugins.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>protected <a href="http://docs.oracle.com/javase/8/docs/api/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="#findLibrary(java.lang.String)" class="member-name-link">findLibrary</a><wbr>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;libname)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">This method is queried by the System.loadLibrary()
code to find the actual native name and path to the
native library to load.</div>
</div>
</div>
</div>
</div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-java.net.URLClassLoader">Methods inherited from class&nbsp;java.net.<a href="http://docs.oracle.com/javase/8/docs/api/java/net/URLClassLoader.html" title="class or interface in java.net" class="external-link">URLClassLoader</a></h3>
<code><a href="http://docs.oracle.com/javase/8/docs/api/java/net/URLClassLoader.html#addURL(java.net.URL)" title="class or interface in java.net" class="external-link">addURL</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/net/URLClassLoader.html#close()" title="class or interface in java.net" class="external-link">close</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/net/URLClassLoader.html#definePackage(java.lang.String,java.util.jar.Manifest,java.net.URL)" title="class or interface in java.net" class="external-link">definePackage</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/net/URLClassLoader.html#findClass(java.lang.String)" title="class or interface in java.net" class="external-link">findClass</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/net/URLClassLoader.html#findResource(java.lang.String)" title="class or interface in java.net" class="external-link">findResource</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/net/URLClassLoader.html#findResources(java.lang.String)" title="class or interface in java.net" class="external-link">findResources</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/net/URLClassLoader.html#getPermissions(java.security.CodeSource)" title="class or interface in java.net" class="external-link">getPermissions</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/net/URLClassLoader.html#getResourceAsStream(java.lang.String)" title="class or interface in java.net" class="external-link">getResourceAsStream</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/net/URLClassLoader.html#getURLs()" title="class or interface in java.net" class="external-link">getURLs</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/net/URLClassLoader.html#newInstance(java.net.URL%5B%5D)" title="class or interface in java.net" class="external-link">newInstance</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/net/URLClassLoader.html#newInstance(java.net.URL%5B%5D,java.lang.ClassLoader)" title="class or interface in java.net" class="external-link">newInstance</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-java.security.SecureClassLoader">Methods inherited from class&nbsp;java.security.<a href="http://docs.oracle.com/javase/8/docs/api/java/security/SecureClassLoader.html" title="class or interface in java.security" class="external-link">SecureClassLoader</a></h3>
<code><a href="http://docs.oracle.com/javase/8/docs/api/java/security/SecureClassLoader.html#defineClass(java.lang.String,byte%5B%5D,int,int,java.security.CodeSource)" title="class or interface in java.security" class="external-link">defineClass</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/security/SecureClassLoader.html#defineClass(java.lang.String,java.nio.ByteBuffer,java.security.CodeSource)" title="class or interface in java.security" class="external-link">defineClass</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-java.lang.ClassLoader">Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html" title="class or interface in java.lang" class="external-link">ClassLoader</a></h3>
<code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#clearAssertionStatus()" title="class or interface in java.lang" class="external-link">clearAssertionStatus</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#defineClass(byte%5B%5D,int,int)" title="class or interface in java.lang" class="external-link">defineClass</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#defineClass(java.lang.String,byte%5B%5D,int,int)" title="class or interface in java.lang" class="external-link">defineClass</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#defineClass(java.lang.String,byte%5B%5D,int,int,java.security.ProtectionDomain)" title="class or interface in java.lang" class="external-link">defineClass</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#defineClass(java.lang.String,java.nio.ByteBuffer,java.security.ProtectionDomain)" title="class or interface in java.lang" class="external-link">defineClass</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#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="external-link">definePackage</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#findClass(java.lang.String,java.lang.String)" title="class or interface in java.lang" class="external-link">findClass</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#findLoadedClass(java.lang.String)" title="class or interface in java.lang" class="external-link">findLoadedClass</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#findResource(java.lang.String,java.lang.String)" title="class or interface in java.lang" class="external-link">findResource</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#findSystemClass(java.lang.String)" title="class or interface in java.lang" class="external-link">findSystemClass</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#getClassLoadingLock(java.lang.String)" title="class or interface in java.lang" class="external-link">getClassLoadingLock</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#getDefinedPackage(java.lang.String)" title="class or interface in java.lang" class="external-link">getDefinedPackage</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#getDefinedPackages()" title="class or interface in java.lang" class="external-link">getDefinedPackages</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#getName()" title="class or interface in java.lang" class="external-link">getName</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#getPackage(java.lang.String)" title="class or interface in java.lang" class="external-link">getPackage</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#getPackages()" title="class or interface in java.lang" class="external-link">getPackages</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#getParent()" title="class or interface in java.lang" class="external-link">getParent</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#getPlatformClassLoader()" title="class or interface in java.lang" class="external-link">getPlatformClassLoader</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#getResource(java.lang.String)" title="class or interface in java.lang" class="external-link">getResource</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#getResources(java.lang.String)" title="class or interface in java.lang" class="external-link">getResources</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#getSystemClassLoader()" title="class or interface in java.lang" class="external-link">getSystemClassLoader</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#getSystemResource(java.lang.String)" title="class or interface in java.lang" class="external-link">getSystemResource</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#getSystemResourceAsStream(java.lang.String)" title="class or interface in java.lang" class="external-link">getSystemResourceAsStream</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#getSystemResources(java.lang.String)" title="class or interface in java.lang" class="external-link">getSystemResources</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#getUnnamedModule()" title="class or interface in java.lang" class="external-link">getUnnamedModule</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#isRegisteredAsParallelCapable()" title="class or interface in java.lang" class="external-link">isRegisteredAsParallelCapable</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#loadClass(java.lang.String)" title="class or interface in java.lang" class="external-link">loadClass</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#loadClass(java.lang.String,boolean)" title="class or interface in java.lang" class="external-link">loadClass</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#registerAsParallelCapable()" title="class or interface in java.lang" class="external-link">registerAsParallelCapable</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#resolveClass(java.lang.Class)" title="class or interface in java.lang" class="external-link">resolveClass</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#resources(java.lang.String)" title="class or interface in java.lang" class="external-link">resources</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#setClassAssertionStatus(java.lang.String,boolean)" title="class or interface in java.lang" class="external-link">setClassAssertionStatus</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#setDefaultAssertionStatus(boolean)" title="class or interface in java.lang" class="external-link">setDefaultAssertionStatus</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#setPackageAssertionStatus(java.lang.String,boolean)" title="class or interface in java.lang" class="external-link">setPackageAssertionStatus</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#setSigners(java.lang.Class,java.lang.Object%5B%5D)" title="class or interface in java.lang" class="external-link">setSigners</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3>
<code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="http://docs.oracle.com/javase/8/docs/api/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">
<!-- ========= 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;(java.io.File)">
<h3>PluginLoader</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="element-name">PluginLoader</span><wbr><span class="parameters">(<a href="http://docs.oracle.com/javase/8/docs/api/java/io/File.html" title="class or interface in java.io" class="external-link">File</a>&nbsp;jf)</span>
throws <span class="exceptions"><a href="http://docs.oracle.com/javase/8/docs/api/java/net/MalformedURLException.html" title="class or interface in java.net" class="external-link">MalformedURLException</a></span></div>
<div class="block">Creates a new instance of PluginLodaer
If the system property "net.java.games.util.plugins.nolocalnative" is
not set then the laoder will look for requried native libs in the
same directory as the plugin jar. (Useful for handling name
collision between plugins). If it IS set however, then it will
fall back to the default way of loading natives. (Necessary for
Java Web Start.)</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>jf</code> - The JarFile to load the Plugins from.</dd>
<dt>Throws:</dt>
<dd><code><a href="http://docs.oracle.com/javase/8/docs/api/java/net/MalformedURLException.html" title="class or interface in java.net" class="external-link">MalformedURLException</a></code> - Will throw this exception if jf does not refer to a
legitimate Jar file.</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="findLibrary(java.lang.String)">
<h3>findLibrary</h3>
<div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="return-type"><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></span>&nbsp;<span class="element-name">findLibrary</span><wbr><span class="parameters">(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;libname)</span></div>
<div class="block">This method is queried by the System.loadLibrary()
code to find the actual native name and path to the
native library to load.
This subclass implementation of this method ensures that
the native library will be loaded from, and only from,
the parent directory of the Jar file this loader was
created to support. This allows different Plugins
with supporting DLLs of the same name to co-exist, each
in their own subdirectory.
Setting the global "localDLLs" by setting the property
net.java.games.util.plugins.nolocalnative defeats this behavior.
This is necessary for Java Web Start apps which have strong
restrictions on where and how native libs can be loaded.</div>
<dl class="notes">
<dt>Overrides:</dt>
<dd><code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html#findLibrary(java.lang.String)" title="class or interface in java.lang" class="external-link">findLibrary</a></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/ClassLoader.html" title="class or interface in java.lang" class="external-link">ClassLoader</a></code></dd>
<dt>Parameters:</dt>
<dd><code>libname</code> - The JNI name of the native library to locate.</dd>
<dt>Returns:</dt>
<dd>Returns a string describing the actual loation of the
native library in the native file system.</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="attemptPluginDefine(java.lang.Class)">
<h3>attemptPluginDefine</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">attemptPluginDefine</span><wbr><span class="parameters">(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Class.html" title="class or interface in java.lang" class="external-link">Class</a>&nbsp;pc)</span></div>
<div class="block">This function is called as part of scanning the Jar for
plugins. It checks to make sure the class passed in is
a legitimate plugin, which is to say that it meets
the following criteria:
(1) Is not itself an interface
(2) Implements the Plugin marker interface either directly
or through inheritance.
interface, either</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>pc</code> - The potential plug-in class to vette.</dd>
<dt>Returns:</dt>
<dd>Returns true if the class meets the criteria for a
plugin. Otherwise returns false.</dd>
</dl>
</section>
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</section>
</li>
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</section>
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