In mysql you not only have to create a user and set a password, you also have to designate from where (and how) that user is allowed to connect the DB. Per default, root can only connect from localhost using the sock file, but, in Java, you will be attempting to connect over TCP. So, read the MySQL documentation (namely the GRANT statement) and add a root@localhost entry.
Java Programmer and Sun Systems Administrator
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Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it.
--Brian Kernighan
