No Such Method Error - in DOM2Helper class

[Abdul Wahab]

Hi!   I want to convert XML to PDF by reading XML file in servlet.  So, Now my process is XML==>XSL:FO==>PDF. I tried with the bellow code. But I am getting "No Such MethodError" exception, for the past 3 days, eventhough the method is existed in class file. Could u please help me to solve this problem. java.lang.NoSuchMethodError         at org.apache.xpath.DOM2Helper.getNamespaceOfNode(DOM2Helper.java:348)         at org.apache.xpath.patterns.NodeTest.execute(NodeTest.java:471) CODE:     File xmlFile = new File(xml-url);     File xslFile = new File(xsl-url);     ByteArrayOutputStream out = new ByteArrayOutputStream();                Driver driver = new Driver();     driver.setRenderer(Driver.RENDER_PDF);     InputHandler inputHandler = new XSLTInputHandler(xmlFile, xslFile);     org.xml.sax.XMLReader parser = inputHandler.getParser();     driver.buildFOTree(parser, inputHandler.getInputSource());     driver.format();     driver.setOutputStream(out);     driver.render();       response.setContentType("application/pdf");     byte[] content = out.toByteArray();     response.setContentLength(content.length);     response.getOutputStream().write(content);     response.getOutputStream().flush(); Thanks, Wahab.