make jar file for mobile

I have created one application using j2me java wireless kit tool but I don't know how to make jar, and what configuration needed in manifest file
I want to play that application on my Nokia mobile which is support java application .

Netbeans IDE do it for you . what is IDE you use ?
NetBeans IDE auto generate the jar for you .Based on the API you use , you can configure it in your project .Because based API version it will be reflected on the Nokia mobile phone you use and (what is the Nokia phone version supported ) .