connect Java to QC

Hello,

I haven't found a proper tutorial to explain part of the connexion from a java project to a QC.

I have foudn this : http://community.hpe.com/t5/Quality-Center-Support-and-News/ALM-OTA-and-java/td-p/5742937 , but i mess with the step 3 ( how to create the jar file , because i've a lot of error with my files extract from the step 2, when i import the OTAClient extract with com4J).

regards,

Manu1602150