Hi Bruce:
  In fact, I don't know much about z/os before, I seen there are two partitions in z/os: 
- Unix partition (filepath separator is "/"),  in most cases:
ftpClient.chdir("C:/");
ftpClient.get("myFile.txt"); 
- ZOS partition (filepath separator is "."),
How to deal with the directory like "IBMUSER.C(PGMA)" with edtftpj? 
thanks!