could not load the translet class 'GregorSamsa'

[Bineesh]

I getting the error "....could not load the translet class 'GregorSamsa'.." while doing XSLT transformation using java.
My XSLT file is litle heavy 2319 line and 150kb.
Is the file size problem? how to resolve this issue . I am using java 1.6
TransformerFactory factory = TransformerFactory.newInstance();
Source stylesheetSource = new StreamSource(new File(stylesheetPathname).getAbsoluteFile());
Transformer transformer = factory.newTransformer(stylesheetSource);
Source inputSource = new StreamSource(new File(inputPathname).getAbsoluteFile());
Result outputResult = new StreamResult(new File(outputPathname).getAbsoluteFile());
transformer.transform(inputSource, outputResult);

Please suggest the solution