NoClassDefFoundError with SAXParser

[Rishi Khanna]

Hello Everyone,   I have been using the Xerces J SAXParser for some time now.  I recently made a modification to my codebase, only to find that I am now getting a NoClassDefFoundError when I call the SAXParser.parse(InputSource in) method.   The xercesImpl JAR is still in my classpath.  My changes had nothing to do with how I am using the parser.  Furthermore, I am still able to set the handlers and features.   I would really appreciate any help you guys can give me in regards to solving this problem....Thanks in advance... Rishi   Here is the code segment:               XMLReader parser = (XMLReader) Class.forName(DEFAULT_PARSER_NAME).newInstance();             if (parser == null) {                 return false;             }                        parser.setContentHandler(mapStore);             parser.setErrorHandler(mapStore);               parser.setFeature("http://xml.org/sax/features/validation", setValidation);             parser.setFeature("http://xml.org/sax/features/namespaces", setNameSpaces);             parser.setFeature(                 "http://apache.org/xml/features/validation/schema",                 setSchemaSupport);               InputStream byteIn;               for (int i=0; i < fileList.length; i++) {                 String filePath = MyFileManager.getConfigFolder() + fileList[i];                 byteIn = new FileInputStream(filePath);                 if (byteIn == null) {                     initException = new NonFatalParseException("Failed loading one or more configuration files.");                 }                 else {                     InputSource in = new InputSource(byteIn);                     parser.parse(in);                     MyFileManager.addLoadedFiles(fileList[i]);                     byteIn = null;                     in = null;                 }             }             mapStore = null;             parser = null;             return true;         }         catch (Throwable e) {             initException = new FatalParseException(e.getMessage());             return false;         }