Sample 1
#sample userfile (user/password "j2ee/j2eepwd" user/password "user1/user1pwd" ) j2ee:9hmjfRwNxvJLU user1:wvQirF86BsjSk
Sample 2
#sample group file staff:j2ee user1 eng:j2ee
Sample 3
#sample user/group file (username "j2ee", user password "j2eepwd") j2ee:9hmjfRwNxvJLU:staff,eng