What do you mean, did I look through it, the MysqlManager class definition?
Also, I searched for conn = - and it found a few, but it was just conn = null;
I also found public static Connection con = null;
Notice the one N on con, and that con = null; was mentioned in a few files also.
Lots of people have had it working without going through all this, there must be an easy fix to it.
How do I give a connection a value. Why can't you just answer that