Loading class `com.mysql.jdbc.Driver’. This is deprecated.

Loading class `com.mysql.jdbc.Driver’. This is deprecated.

以下に変更

Class.forName("com.mysql.cj.jdbc.Driver").newInstance();

Loading class `com.mysql.jdbc.Driver’. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver’. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.
java.sql.SQLException:

connectorがどうもおかしいっぽい。
なんか違うなーと思ったらconnector/jか! 間際らしい。