📄 classloader.html
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../java/lang/String.html">String</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#findLibrary(java.lang.String)">findLibrary</A></B>(<A HREF="../../java/lang/String.html">String</A> libname)</CODE><BR> Returns the absolute path name of a native library.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../java/lang/Class.html">Class</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#findLoadedClass(java.lang.String)">findLoadedClass</A></B>(<A HREF="../../java/lang/String.html">String</A> name)</CODE><BR> Finds the class with the given name if it had been previously loaded through this class loader.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../java/net/URL.html">URL</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#findResource(java.lang.String)">findResource</A></B>(<A HREF="../../java/lang/String.html">String</A> name)</CODE><BR> Finds the resource with the given name.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../java/util/Enumeration.html">Enumeration</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#findResources(java.lang.String)">findResources</A></B>(<A HREF="../../java/lang/String.html">String</A> name)</CODE><BR> Returns an Enumeration of URLs representing all the resources with the given name.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../java/lang/Class.html">Class</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#findSystemClass(java.lang.String)">findSystemClass</A></B>(<A HREF="../../java/lang/String.html">String</A> name)</CODE><BR> Finds a class with the specified name, loading it if necessary.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../java/lang/Package.html">Package</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#getPackage(java.lang.String)">getPackage</A></B>(<A HREF="../../java/lang/String.html">String</A> name)</CODE><BR> Returns a Package that has been defined by this class loader or any of its ancestors.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../java/lang/Package.html">Package</A>[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#getPackages()">getPackages</A></B>()</CODE><BR> Returns all of the Packages defined by this class loader and its ancestors.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/ClassLoader.html">ClassLoader</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#getParent()">getParent</A></B>()</CODE><BR> Returns the parent class loader for delegation.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/net/URL.html">URL</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#getResource(java.lang.String)">getResource</A></B>(<A HREF="../../java/lang/String.html">String</A> name)</CODE><BR> Finds the resource with the given name.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/io/InputStream.html">InputStream</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#getResourceAsStream(java.lang.String)">getResourceAsStream</A></B>(<A HREF="../../java/lang/String.html">String</A> name)</CODE><BR> Returns an input stream for reading the specified resource.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/util/Enumeration.html">Enumeration</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#getResources(java.lang.String)">getResources</A></B>(<A HREF="../../java/lang/String.html">String</A> name)</CODE><BR> Finds all the resources with the given name.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/lang/ClassLoader.html">ClassLoader</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#getSystemClassLoader()">getSystemClassLoader</A></B>()</CODE><BR> Returns the system class loader for delegation.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/net/URL.html">URL</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#getSystemResource(java.lang.String)">getSystemResource</A></B>(<A HREF="../../java/lang/String.html">String</A> name)</CODE><BR> Find a resource of the specified name from the search path used to load classes.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/io/InputStream.html">InputStream</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#getSystemResourceAsStream(java.lang.String)">getSystemResourceAsStream</A></B>(<A HREF="../../java/lang/String.html">String</A> name)</CODE><BR> Open for reading, a resource of the specified name from the search path used to load classes.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../java/util/Enumeration.html">Enumeration</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#getSystemResources(java.lang.String)">getSystemResources</A></B>(<A HREF="../../java/lang/String.html">String</A> name)</CODE><BR> Finds all resources of the specified name from the search path used to load classes.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../java/lang/Class.html">Class</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#loadClass(java.lang.String)">loadClass</A></B>(<A HREF="../../java/lang/String.html">String</A> name)</CODE><BR> Loads the class with the specified name.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../java/lang/Class.html">Class</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#loadClass(java.lang.String, boolean)">loadClass</A></B>(<A HREF="../../java/lang/String.html">String</A> name, boolean resolve)</CODE><BR> Loads the class with the specified name.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#resolveClass(java.lang.Class)">resolveClass</A></B>(<A HREF="../../java/lang/Class.html">Class</A> c)</CODE><BR> Links the specified class.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected void</CODE></FONT></TD><TD><CODE><B><A HREF="../../java/lang/ClassLoader.html#setSigners(java.lang.Class, java.lang.Object[])">setSigners</A></B>(<A HREF="../../java/lang/Class.html">Class</A> c, <A HREF="../../java/lang/Object.html">Object</A>[] signers)</CODE><BR> Sets the signers of a class.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.<A HREF="../../java/lang/Object.html">Object</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../java/lang/Object.html#clone()">clone</A>, <A HREF="../../java/lang/Object.html#equals(java.lang.Object)">equals</A>, <A HREF="../../java/lang/Object.html#finalize()">finalize</A>, <A HREF="../../java/lang/Object.html#getClass()">getClass</A>, <A HREF="../../java/lang/Object.html#hashCode()">hashCode</A>, <A HREF="../../java/lang/Object.html#notify()">notify</A>, <A HREF="../../java/lang/Object.html#notifyAll()">notifyAll</A>, <A HREF="../../java/lang/Object.html#toString()">toString</A>, <A HREF="../../java/lang/Object.html#wait()">wait</A>, <A HREF="../../java/lang/Object.html#wait(long)">wait</A>, <A HREF="../../java/lang/Object.html#wait(long, int)">wait</A></CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TD></TR></TABLE><A NAME="ClassLoader(java.lang.ClassLoader)"><!-- --></A><H3>ClassLoader</H3><PRE>protected <B>ClassLoader</B>(<A HREF="../../java/lang/ClassLoader.html">ClassLoader</A> parent)</PRE><DL><DD>Creates a new class loader using the specified parent class loader for delegation. <p> If there is a security manager, its <code>checkCreateClassLoader</code> method is called. This may result in a security exception.<DD><DL><DT><B>Parameters:</B><DD><CODE>parent</CODE> - the parent class loader<DT><B>Throws:</B><DD><CODE><A HREF="../../java/lang/SecurityException.html">SecurityException</A></CODE> - if a security manager exists and its <code>checkCreateClassLoader</code> method doesn't allow creation of a new class loader.<DT><B>Since: </B><DD>1.2</DD><DT><B>See Also: </B><DD><A HREF="../../java/lang/SecurityException.html"><CODE>SecurityException</CODE></A>, <A HREF="../../java/lang/SecurityManager.html#checkCreateClassLoader()"><CODE>SecurityManager.checkCreateClassLoader()</CODE></A></DL></DD></DL><HR><A NAME="ClassLoader()"><!-- --></A><H3>ClassLoader</H3><PRE>protected <B>ClassLoader</B>()</PRE><DL><DD>Creates a new class loader using the <code>ClassLoader</code> returned by the method <code>getSystemClassLoader()</code> as the parent class loader. <p> This constructor is invoked for every newly created class loader. Because the class <code>ClassLoader</code> is abstract, it is not possible to create a new instance of the class <code>ClassLoader</code> itself; however, every constructor for a subclass of <code>ClassLoader</code> necessarily invokes this constructor, explicitly or implicitly, directly or indirectly. <p> If there is a security manager, its <code>checkCreateClassLoader</code> method is called. This may result in a security exception.<DD><DL><DT><B>Throws:</B><DD><CODE><A HREF="../../java/lang/SecurityException.html">SecurityException</A></CODE> - if a security manager exists and its <code>checkCreateClassLoader</code> method doesn't allow creation of a new class loader.<DT><B>See Also: </B><DD><A HREF="../../java/lang/SecurityException.html"><CODE>SecurityException</CODE></A>, <A HREF="../../java/lang/SecurityManager.html#checkCreateClassLoader()"><CODE>SecurityManager.checkCreateClassLoader()</CODE></A></DL></DD></DL><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="loadClass(java.lang.String)"><!-- --></A><H3>loadClass</H3><PRE>public <A HREF="../../java/lang/Class.html">Class</A> <B>loadClass</B>(<A HREF="../../java/lang/String.html">String</A> name) throws <A HREF="../../java/lang/ClassNotFoundException.html">ClassNotFoundException</A></PRE><DL><DD>Loads the class with the specified name. This method searches for classes in the same manner as the <A HREF="../../java/lang/ClassLoader.html#loadClass(java.lang.String, boolean)"><CODE>loadClass(String, boolean)</CODE></A> method. It is called by the Java virtual machine to resolve class references. Calling this method is equivalent to calling <code>loadClass(name, false)</code>.<DD><DL><DT><B>Parameters:</B><DD><CODE>name</CODE> - the name of the class<DT><B>Returns:</B><DD>the resulting <code>Class</code> object<DT><B>Throws:</B><DD><CODE><A HREF="../../java/lang/ClassNotFoundException.html">ClassNotFoundException</A></CODE> - if the class was not found</DL></DD></DL><HR><A NAME="loadClass(java.lang.String, boolean)"><!-- --></A><H3>loadClass</H3><PRE>protected <A HREF="../../java/lang/Class.html">Class</A> <B>loadClass</B>(<A HREF="../../java/lang/String.html">String</A> name, boolean resolve) throws <A HREF="../../java/lang/ClassNotFoundException.html">ClassNotFoundException</A></PRE><DL><DD>Loads the class with the specified name. The default implementation of this method searches for classes in the following order:<p> <ol> <li> Call <A HREF="../../java/lang/ClassLoader.html#findLoadedClass(java.lang.String)"><CODE>findLoadedClass(String)</CODE></A> to check if the class has already been loaded. <p>⌨️ 快捷键说明
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