MySQL is licensed with the GPL, so any program binary that you distribute with it must use the GPL, too. See the GNU General Public Licence.
However, since the application that is being developed in the tutorial is only connecting the MySQL using the JDBC protocol, this notice doesn't apply. It would, if MySQL were licensed under the AGPL.
If someone new reads this notice, they may back out because of possible licensing issues, which isn't the case.
Or maybe I'm not understanding correctly why the GPL would apply for this tutorial.
In Accessing data with MySQL, there is a notification that MySQL is licensed with GPL:
However, since the application that is being developed in the tutorial is only connecting the MySQL using the JDBC protocol, this notice doesn't apply. It would, if MySQL were licensed under the AGPL.
If someone new reads this notice, they may back out because of possible licensing issues, which isn't the case.
Or maybe I'm not understanding correctly why the GPL would apply for this tutorial.