checkJava2R(javaData, rVariable)
checkPkgVersion(pkgName, expVersion)
reflectObj(x, verbose=FALSE)javaData. rVariable might have been
created in previous calls, or loaded from a data file.checkJava2R returns TRUE if javaData is identical
to rVariable, or signals an error otherwise.checkPkgVersion returns true if the installed package matches
the expected package, or signals a warning otherwise.reflectObj returns the object.