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ClassUtils (Apache Shiro 1.2.4 API)
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org.apache.shiro.util</FONT>
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Class ClassUtils</H2>
<PRE>
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.shiro.util.ClassUtils</B>
</PRE>
<HR>
<DL>
<DT><PRE>public class <A HREF="../../../../src-html/org/apache/shiro/util/ClassUtils.html#line.34"><B>ClassUtils</B></A><DT>extends <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></DL>
</PRE>
<P>
Utility method library used to conveniently interact with <code>Class</code>es, such as acquiring them from the
application <code>ClassLoader</code>s and instantiating Objects from them.
<P>
<P>
<DL>
<DT><B>Since:</B></DT>
<DD>0.1</DD>
</DL>
<HR>
<P>
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
<A NAME="constructor_summary"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
<B>Constructor Summary</B></FONT></TH>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../org/apache/shiro/util/ClassUtils.html#ClassUtils()">ClassUtils</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
</TABLE>
&nbsp;
<!-- ========== METHOD SUMMARY =========== -->
<A NAME="method_summary"><!-- --></A>
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
<B>Method Summary</B></FONT></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/util/ClassUtils.html#forName(java.lang.String)">forName</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;fqcn)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Attempts to load the specified class name from the current thread's
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#getContextClassLoader()" title="class or interface in java.lang"><CODE>context class loader</CODE></A>, then the
current ClassLoader (<code>ClassUtils.class.getClassLoader()</code>), then the system/application
ClassLoader (<code>ClassLoader.getSystemClassLoader()</code>, in that order.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/reflect/Constructor.html?is-external=true" title="class or interface in java.lang.reflect">Constructor</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/util/ClassUtils.html#getConstructor(java.lang.Class, java.lang.Class...)">getConstructor</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A>&nbsp;clazz,
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A>...&nbsp;argTypes)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/util/ClassUtils.html#getResourceAsStream(java.lang.String)">getResourceAsStream</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;name)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the specified resource by checking the current thread's
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#getContextClassLoader()" title="class or interface in java.lang"><CODE>context class loader</CODE></A>, then the
current ClassLoader (<code>ClassUtils.class.getClassLoader()</code>), then the system/application
ClassLoader (<code>ClassLoader.getSystemClassLoader()</code>, in that order, using
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/ClassLoader.html?is-external=true#getResourceAsStream(java.lang.String)" title="class or interface in java.lang"><CODE>getResourceAsStream(name)</CODE></A>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/util/ClassUtils.html#instantiate(java.lang.reflect.Constructor, java.lang.Object...)">instantiate</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/reflect/Constructor.html?is-external=true" title="class or interface in java.lang.reflect">Constructor</A>&nbsp;ctor,
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>...&nbsp;args)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/util/ClassUtils.html#isAvailable(java.lang.String)">isAvailable</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;fullyQualifiedClassName)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/util/ClassUtils.html#newInstance(java.lang.Class)">newInstance</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A>&nbsp;clazz)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/util/ClassUtils.html#newInstance(java.lang.Class, java.lang.Object...)">newInstance</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A>&nbsp;clazz,
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>...&nbsp;args)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/util/ClassUtils.html#newInstance(java.lang.String)">newInstance</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;fqcn)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/shiro/util/ClassUtils.html#newInstance(java.lang.String, java.lang.Object...)">newInstance</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;fqcn,
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>...&nbsp;args)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
</TR>
</TABLE>
&nbsp;
<P>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<A NAME="constructor_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="ClassUtils()"><!-- --></A><H3>
ClassUtils</H3>
<PRE>
public <A HREF="../../../../src-html/org/apache/shiro/util/ClassUtils.html#line.34"><B>ClassUtils</B></A>()</PRE>
<DL>
</DL>
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Method Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="getResourceAsStream(java.lang.String)"><!-- --></A><H3>
getResourceAsStream</H3>
<PRE>
public static <A HREF="http://java.sun.com/javase/6/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</A> <A HREF="../../../../src-html/org/apache/shiro/util/ClassUtils.html#line.85"><B>getResourceAsStream</B></A>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;name)</PRE>
<DL>
<DD>Returns the specified resource by checking the current thread's
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#getContextClassLoader()" title="class or interface in java.lang"><CODE>context class loader</CODE></A>, then the
current ClassLoader (<code>ClassUtils.class.getClassLoader()</code>), then the system/application
ClassLoader (<code>ClassLoader.getSystemClassLoader()</code>, in that order, using
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/ClassLoader.html?is-external=true#getResourceAsStream(java.lang.String)" title="class or interface in java.lang"><CODE>getResourceAsStream(name)</CODE></A>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - the name of the resource to acquire from the classloader(s).
<DT><B>Returns:</B><DD>the InputStream of the resource found, or <code>null</code> if the resource cannot be found from any
of the three mentioned ClassLoaders.<DT><B>Since:</B></DT>
<DD>0.9</DD>
</DL>
</DD>
</DL>
<HR>
<A NAME="forName(java.lang.String)"><!-- --></A><H3>
forName</H3>
<PRE>
public static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A> <A HREF="../../../../src-html/org/apache/shiro/util/ClassUtils.html#line.125"><B>forName</B></A>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;fqcn)
throws <A HREF="../../../../org/apache/shiro/util/UnknownClassException.html" title="class in org.apache.shiro.util">UnknownClassException</A></PRE>
<DL>
<DD>Attempts to load the specified class name from the current thread's
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Thread.html?is-external=true#getContextClassLoader()" title="class or interface in java.lang"><CODE>context class loader</CODE></A>, then the
current ClassLoader (<code>ClassUtils.class.getClassLoader()</code>), then the system/application
ClassLoader (<code>ClassLoader.getSystemClassLoader()</code>, in that order. If any of them cannot locate
the specified class, an <code>UnknownClassException</code> is thrown (our RuntimeException equivalent of
the JRE's <code>ClassNotFoundException</code>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>fqcn</CODE> - the fully qualified class name to load
<DT><B>Returns:</B><DD>the located class
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../org/apache/shiro/util/UnknownClassException.html" title="class in org.apache.shiro.util">UnknownClassException</A></CODE> - if the class cannot be found.</DL>
</DD>
</DL>
<HR>
<A NAME="isAvailable(java.lang.String)"><!-- --></A><H3>
isAvailable</H3>
<PRE>
public static boolean <A HREF="../../../../src-html/org/apache/shiro/util/ClassUtils.html#line.154"><B>isAvailable</B></A>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;fullyQualifiedClassName)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="newInstance(java.lang.String)"><!-- --></A><H3>
newInstance</H3>
<PRE>
public static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> <A HREF="../../../../src-html/org/apache/shiro/util/ClassUtils.html#line.163"><B>newInstance</B></A>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;fqcn)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="newInstance(java.lang.String, java.lang.Object...)"><!-- --></A><H3>
newInstance</H3>
<PRE>
public static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> <A HREF="../../../../src-html/org/apache/shiro/util/ClassUtils.html#line.167"><B>newInstance</B></A>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;fqcn,
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>...&nbsp;args)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="newInstance(java.lang.Class)"><!-- --></A><H3>
newInstance</H3>
<PRE>
public static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> <A HREF="../../../../src-html/org/apache/shiro/util/ClassUtils.html#line.171"><B>newInstance</B></A>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A>&nbsp;clazz)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="newInstance(java.lang.Class, java.lang.Object...)"><!-- --></A><H3>
newInstance</H3>
<PRE>
public static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> <A HREF="../../../../src-html/org/apache/shiro/util/ClassUtils.html#line.183"><B>newInstance</B></A>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A>&nbsp;clazz,
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>...&nbsp;args)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getConstructor(java.lang.Class, java.lang.Class...)"><!-- --></A><H3>
getConstructor</H3>
<PRE>
public static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/reflect/Constructor.html?is-external=true" title="class or interface in java.lang.reflect">Constructor</A> <A HREF="../../../../src-html/org/apache/shiro/util/ClassUtils.html#line.192"><B>getConstructor</B></A>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A>&nbsp;clazz,
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A>...&nbsp;argTypes)</PRE>
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<A NAME="instantiate(java.lang.reflect.Constructor, java.lang.Object...)"><!-- --></A><H3>
instantiate</H3>
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public static <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> <A HREF="../../../../src-html/org/apache/shiro/util/ClassUtils.html#line.201"><B>instantiate</B></A>(<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/reflect/Constructor.html?is-external=true" title="class or interface in java.lang.reflect">Constructor</A>&nbsp;ctor,
<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A>...&nbsp;args)</PRE>
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