SQL & PL/SQL

Hi guys... perhaps this thred need to be created in JDeveloper fourm, it so please let me know.

I generated the classes from a web service which complie without errors and exedcute correctly. When trying to compile the main stub in Oracle database, I get an error "CONNOT RESOLVE SYMBOL" reviewing the java class, I see that extends the wrapper generated by Jdev. So I try to complie the extendable class, after trying to generate and compile it in the database, I get the error: "class$ is reserved for internal use" The code has the next line:
static java.lang.Class class$(java.lang.String param1)

Is this error launched from the oracle database? My guess is that maybe Im missing some library or something and thats why I can create the such Java Name procedures. But I will like if anyone could guide me through this exception.
Thanks
JP