> - The desired return type.<DT><B>Returns:</B><DD>The <code>Object</code> that is the result of evaluating the
 expression and converting the result to
   <code>returnType</code>.<DT><B>Throws:</B><DD><A HREF="../../../../javax/xml/xpath/XPathExpressionException.html">XPathExpressionException</A> - If the expression cannot be evaluated.<DD>java.lang.IllegalArgumentException - If <code>returnType</code> is not one
 of the types defined in <A HREF="../../../../javax/xml/xpath/XPathConstants.html"><CODE>XPath