Create RFC Function using Java Program

hi

I am trying to create a small utility in java that extracts data from SAP system and loads it to local Db

For extracting data from SAP we have a custom ABAP function (RFC) running on SAP server that is called from Java using JCO3 APIs

Installation of this utility on client side involves -

1. Installing RFC on Clientu2019s SAP instance

2. Installing / Configuring Java code on Clientu2019s machine

Is there a way to install / create a RFC function using java -JCO APIs so that Step-1 can be omitted?

I had browsed through a sample provided in examples installed with JCO3 but its very trivial example can someone point to a exhaustive link or explain how this can be achieved using Java program

Thanks