
You need to import the generated _Notificator_Stub to the UtilCallback project in your Developer Studio so that it can be packaged in the EJB JAR file you are about to generate out of it.
Use the function of the Developer Studio that imports resources located on the file system.
Now the appropriate stub for the Notificator class is imported to the UtilCallbackproject. You must now save the project content so that the stub gets compiled.
At the end of this procedure, you have successfully developed the source files of the UtilCallback application. You can go on with assembling the EJB JAR.