Need help with .jarc type of files

Hi,
can someone help me learn on how to extract from this .jarc type of files
from the game i decrypted, in the character folder there is a set of .jarc files for each character
so can someone pls help me
I already looked through web but I got no luck in finding any methods to extract this

Here is a sample of the set of files
http://www.mediafire.com/download/n9mcmizyjjp3ln4/sample+of+jarc+file.rar

Tnx in advance