Java Code for using an Enterprise Service?

Hi,

I am new to CE , Can some one please provide the code for consuming an Enterprise Service inside my Application Service.

I have Imprted the Inventory LookUp ES insid emy project, create the default mapping for the same inside an application service, created a method which calls the mapped ES method.

But I got stuck at this juncture as I dont know how should I recieve the data from the user and through which object also how should I send this data to the ES to recieve the response.

Please reply ASAP.

Thanks,

Manish