The following Runtime exception java.lang.NoClassDefFoundError: org/apache/xalan/processor/TransformerFactoryImpl normally happens when we try to convert an DOM object to XML representation.
Exception
The following is an example of on such Exception Stack Trace that is generated.
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/xalan/processor/TransformerFactoryImpl
at weblogic.xml.jaxp.RegistryTransformerFactory.<init>(RegistryTransformerFactory.java:62)