Creating .jar file for a jdbc application

[krishnaprasad_it01]

I have written an application which uses jdbc to communicate with oracle 10g
database .I have written the application using NetBeans 6.1.The application is running well and updating the database tables well ,when it is run from NetBeans IDE but when I create a jar file of the application the tables in my database are not updated.I think I did some wrong while creating the .jar file of the application.So ,anyone please tell me the procedure of creating the .jar file of the jdbc application.
Thank u.