unknown database in jdbc

please check in mysql database whether the database name 'kholofedb' is existed or not

i think you haven't created

please check it once if no create it and its related tables also

Log in to the mysql server,

$ mysql -u <username> -p<password>

List all the databases,

mysql> show databases;

Check whether your DB name is there,

+--------------------+
| Database           |
+--------------------+
| information_schema |
| kholofelodb        |
| mysql              |
| phpmyadmin         |
+--------------------+

Please note: database names are case sensitive.

Hope this helps.

I had the same issue and found that the cause of it was: The name of the database here is CASE SENSITIVE! So, I was trying to connect using a database name like "test2", but the database name actually was "Test2".