Help on java setup

Hi everyone,

I need your help. I am new on this forum and may be for the first time i posted in a wrong forum.
Recently i made a java application that connects to the database created in WAMP SERVER. When i run the
code through netbeans IDE the connection is successfull connected. I created a setup for my application and it is
running perfectly but the problem is that it does not connect with my database. It is giving this message:
java.lang.ClassNotFoundException:com.mysql.jdbc.Driver
I used both launch4j and Inno setup compiler to create the setup.
Can anyone help me out please?

Thx,