org.castor.jdo.util.JDOConfFactory

createJdoConf(InputSource, EntityResolver, ClassLoader)

90

ClassLoader is never used. Remove it from signature.

org.exolab.castor.jdo.JDOManager

loadConfiguration(...)
createInstance(String)

Create a Factory (e.g. JDOManagerFactory) to set ClassLoader & various parameters  instead of using static loadConfiguration and creatInstance methods.