How to export java object from db to make it as java class file

HI

My Name is Ganesh. I am using Oracle 11. The issue is we use the Java Class file loaded into oracle database as object. I need to extract the class file from the database. Once i get the class file i need to redeploy the class file in my application lower environment. Could you please let me know the command/procedure how to export the java object from the database and convert it to class file, so that the same class file can be re-used in lower environment having oracle as database. I request your response asap.

Thanks,

Ganesh