Is this "ftp" variable an FTPClient? If so, does it have a method to connect to the FTP server? (I ask because there isn't an FTPClient method in the standard
Java API so you must be referring to some other, unspecified, FTPClient class.)
I'm guessing it does. Then
you should do that first. After that, then assuming the server makes your current directory its root, the name of the file you want is "/java/mul/735/Folder/ver.xml". (Use a command-line FTP client to find out what your actual working directory is on the server, and start from there.)