Declaring an XSLT Extension Function

Extension functions must have one of the following signatures:

A class that contains an extension function might look like the following:


import org.w3c.dom.*; import java.lang.Double; public class NumberUtils { public Object Average(NodeList nl) { double nSum = 0; for (int i = nl.getLength() - 1; i >= 0; i--) { nSum += Double.valueOf(nl.item(i). getNodeValue()).doubleValue(); } return new Double(nSum / nl.getLength()); } }