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ReflectUtil (Apache Ant API)
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<H2>

org.apache.tools.ant.util
 
Class ReflectUtil</H2>
<PRE>
java.lang.Object
 <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by ">org.apache.tools.ant.util.ReflectUtil
</PRE>
<HR>
<DL>
<DT><PRE>public class ReflectUtil<DT>extends java.lang.Object</DL>
</PRE>

Utility class to handle reflection on java objects.
 The class contains static methods to call reflection
 methods, catch any exceptions, converting them
 to BuildExceptions.

<HR>

<A NAME="method_summary"></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TH ALIGN="left" COLSPAN="2">
Method Summary</TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>static&nbsp;java.lang.Object</CODE></TD>
<TD><CODE><A HREF="../../../../../org/apache/tools/ant/util/ReflectUtil.html#getField(java.lang.Object, java.lang.String)">getField</A>(java.lang.Object&nbsp;obj,
 java.lang.String&nbsp;fieldName)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the value of a field in an object.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>static&nbsp;java.lang.Object</CODE></TD>
<TD><CODE><A HREF="../../../../../org/apache/tools/ant/util/ReflectUtil.html#invoke(java.lang.Object, java.lang.String)">invoke</A>(java.lang.Object&nbsp;obj,
 java.lang.String&nbsp;methodName)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Call a method on the object with no parameters.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>static&nbsp;java.lang.Object</CODE></TD>
<TD><CODE><A HREF="../../../../../org/apache/tools/ant/util/ReflectUtil.html#invoke(java.lang.Object, java.lang.String, java.lang.Class, java.lang.Object)">invoke</A>(java.lang.Object&nbsp;obj,
 java.lang.String&nbsp;methodName,
 java.lang.Class&nbsp;argType,
 java.lang.Object&nbsp;arg)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Call a method on the object with one argument.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>static&nbsp;java.lang.Object</CODE></TD>
<TD><CODE><A HREF="../../../../../org/apache/tools/ant/util/ReflectUtil.html#invoke(java.lang.Object, java.lang.String, java.lang.Class, java.lang.Object, java.lang.Class, java.lang.Object)">invoke</A>(java.lang.Object&nbsp;obj,
 java.lang.String&nbsp;methodName,
 java.lang.Class&nbsp;argType1,
 java.lang.Object&nbsp;arg1,
 java.lang.Class&nbsp;argType2,
 java.lang.Object&nbsp;arg2)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Call a method on the object with two argument.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>static&nbsp;java.lang.Object</CODE></TD>
<TD><CODE><A HREF="../../../../../org/apache/tools/ant/util/ReflectUtil.html#invokeStatic(java.lang.Object, java.lang.String)">invokeStatic</A>(java.lang.Object&nbsp;obj,
 java.lang.String&nbsp;methodName)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Call a method on the object with no parameters.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>static&nbsp;java.lang.Object</CODE></TD>
<TD><CODE><A HREF="../../../../../org/apache/tools/ant/util/ReflectUtil.html#newInstance(java.lang.Class, java.lang.Class[], java.lang.Object[])">newInstance</A>(java.lang.Class&nbsp;ofClass,
 java.lang.Class[]&nbsp;argTypes,
 java.lang.Object[]&nbsp;args)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Create an instance of a class using the constructor matching
 the given arguments.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>static&nbsp;boolean</CODE></TD>
<TD><CODE><A HREF="../../../../../org/apache/tools/ant/util/ReflectUtil.html#respondsTo(java.lang.Object, java.lang.String)">respondsTo</A>(java.lang.Object&nbsp;o,
 java.lang.String&nbsp;methodName)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A method to test if an object responds to a given
 message (method call)</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>static&nbsp;void</CODE></TD>
<TD><CODE><A HREF="../../../../../org/apache/tools/ant/util/ReflectUtil.html#throwBuildException(java.lang.Exception)">throwBuildException</A>(java.lang.Exception&nbsp;t)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A method to convert an invocationTargetException to
 a buildexception and throw it.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%">
<CODE>static&nbsp;<A HREF="../../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></CODE></TD>
<TD><CODE><A HREF="../../../../../org/apache/tools/ant/util/ReflectUtil.html#toBuildException(java.lang.Exception)">toBuildException</A>(java.lang.Exception&nbsp;t)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A method to convert an invocationTargetException to
 a buildexception.</TD>
</TR>
</TABLE>
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<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left">Methods inherited from class java.lang.Object</TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
</TR>
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&nbsp;

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Method Detail</TH>
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<A NAME="newInstance(java.lang.Class, java.lang.Class[], java.lang.Object[])"></A><H3>
newInstance</H3>
<PRE>
public static java.lang.Object newInstance(java.lang.Class&nbsp;ofClass,
 java.lang.Class[]&nbsp;argTypes,
 java.lang.Object[]&nbsp;args)</PRE>
<DL>
<DD>Create an instance of a class using the constructor matching
 the given arguments.

<DD><DL>
<DT>Since:</DT>
 <DD>Ant 1.8.0</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="invoke(java.lang.Object, java.lang.String)"></A><H3>
invoke</H3>
<PRE>
public static java.lang.Object invoke(java.lang.Object&nbsp;obj,
 java.lang.String&nbsp;methodName)</PRE>
<DL>
<DD>Call a method on the object with no parameters.

<DD><DL>
<DT>Parameters:<DD><CODE>obj</CODE> - the object to invoke the method on.<DD><CODE>methodName</CODE> - the name of the method to call
<DT>Returns:<DD>the object returned by the method</DL>
</DD>
</DL>
<HR>

<A NAME="invokeStatic(java.lang.Object, java.lang.String)"></A><H3>
invokeStatic</H3>
<PRE>
public static java.lang.Object invokeStatic(java.lang.Object&nbsp;obj,
 java.lang.String&nbsp;methodName)</PRE>
<DL>
<DD>Call a method on the object with no parameters.
 Note: Unlike the invoke method above, this
 calls class or static methods, not instance methods.

<DD><DL>
<DT>Parameters:<DD><CODE>obj</CODE> - the object to invoke the method on.<DD><CODE>methodName</CODE> - the name of the method to call
<DT>Returns:<DD>the object returned by the method</DL>
</DD>
</DL>
<HR>

<A NAME="invoke(java.lang.Object, java.lang.String, java.lang.Class, java.lang.Object)"></A><H3>
invoke</H3>
<PRE>
public static java.lang.Object invoke(java.lang.Object&nbsp;obj,
 java.lang.String&nbsp;methodName,
 java.lang.Class&nbsp;argType,
 java.lang.Object&nbsp;arg)</PRE>
<DL>
<DD>Call a method on the object with one argument.

<DD><DL>
<DT>Parameters:<DD><CODE>obj</CODE> - the object to invoke the method on.<DD><CODE>methodName</CODE> - the name of the method to call<DD><CODE>argType</CODE> - the type of argument.<DD><CODE>arg</CODE> - the value of the argument.
<DT>Returns:<DD>the object returned by the method</DL>
</DD>
</DL>
<HR>

<A NAME="invoke(java.lang.Object, java.lang.String, java.lang.Class, java.lang.Object, java.lang.Class, java.lang.Object)"></A><H3>
invoke</H3>
<PRE>
public static java.lang.Object invoke(java.lang.Object&nbsp;obj,
 java.lang.String&nbsp;methodName,
 java.lang.Class&nbsp;argType1,
 java.lang.Object&nbsp;arg1,
 java.lang.Class&nbsp;argType2,
 java.lang.Object&nbsp;arg2)</PRE>
<DL>
<DD>Call a method on the object with two argument.

<DD><DL>
<DT>Parameters:<DD><CODE>obj</CODE> - the object to invoke the method on.<DD><CODE>methodName</CODE> - the name of the method to call<DD><CODE>argType1</CODE> - the type of the first argument.<DD><CODE>arg1</CODE> - the value of the first argument.<DD><CODE>argType2</CODE> - the type of the second argument.<DD><CODE>arg2</CODE> - the value of the second argument.
<DT>Returns:<DD>the object returned by the method</DL>
</DD>
</DL>
<HR>

<A NAME="getField(java.lang.Object, java.lang.String)"></A><H3>
getField</H3>
<PRE>
public static java.lang.Object getField(java.lang.Object&nbsp;obj,
 java.lang.String&nbsp;fieldName)
 throws <A HREF="../../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></PRE>
<DL>
<DD>Get the value of a field in an object.

<DD><DL>
<DT>Parameters:<DD><CODE>obj</CODE> - the object to look at.<DD><CODE>fieldName</CODE> - the name of the field in the object.
<DT>Returns:<DD>the value of the field.
<DT>Throws:
<DD><CODE><A HREF="../../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></CODE> - if there is an error.</DL>
</DD>
</DL>
<HR>

<A NAME="throwBuildException(java.lang.Exception)"></A><H3>
throwBuildException</H3>
<PRE>
public static void throwBuildException(java.lang.Exception&nbsp;t)
 throws <A HREF="../../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></PRE>
<DL>
<DD>A method to convert an invocationTargetException to
 a buildexception and throw it.

<DD><DL>
<DT>Parameters:<DD><CODE>t</CODE> - the invocation target exception.
<DT>Throws:
<DD><CODE><A HREF="../../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></CODE> - the converted exception.</DL>
</DD>
</DL>
<HR>

<A NAME="toBuildException(java.lang.Exception)"></A><H3>
toBuildException</H3>
<PRE>
public static <A HREF="../../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A> toBuildException(java.lang.Exception&nbsp;t)</PRE>
<DL>
<DD>A method to convert an invocationTargetException to
 a buildexception.

<DD><DL>
<DT>Parameters:<DD><CODE>t</CODE> - the invocation target exception.
<DT>Returns:<DD>the converted exception.<DT>Since:</DT>
 <DD>ant 1.7.1</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="respondsTo(java.lang.Object, java.lang.String)"></A><H3>
respondsTo</H3>
<PRE>
public static boolean respondsTo(java.lang.Object&nbsp;o,
 java.lang.String&nbsp;methodName)
 throws <A HREF="../../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></PRE>
<DL>
<DD>A method to test if an object responds to a given
 message (method call)

<DD><DL>
<DT>Parameters:<DD><CODE>o</CODE> - the object<DD><CODE>methodName</CODE> - the method to check for
<DT>Returns:<DD>true if the object has the method.
<DT>Throws:
<DD><CODE><A HREF="../../../../../org/apache/tools/ant/BuildException.html" title="class in org.apache.tools.ant">BuildException</A></CODE> - if there is a problem.</DL>
</DD>
</DL>

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