Exception in thread "main" java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES)

This error message indicates that the user 'root' is being denied access to the MySQL database on the local machine. This could be due to one of several reasons:

1. Incorrect username or password: Make sure that the username and password for the 'root' user are correct and that they match the information used to set up the MySQL server.

2. Insufficient privileges: Check if the 'root' user has sufficient privileges to access the database. The user may require additional privileges to perform certain operations.

3. Firewall or network issues: Ensure that there are no network or firewall issues preventing the 'root' user from accessing the database.

To resolve this issue, try the following:

1. Verify the username and password for the 'root' user.

2. Grant additional privileges to the 'root' user if necessary.

3. Check for any network or firewall issues that may be preventing access to the database.

4. Ensure that the MySQL server is running and configured correctly.

5. If all else fails, try resetting the password for the 'root' user.