JDBC driver adds extra .0 to DOUBLEs that MySQL driver doesn't

I have a table that stores DOUBLE values. Frequently these are non-decimal values.

When I issue the following query via Workbench:

select Order_Total from Orders

Workbench gives me the expected results (importantly, so does the MySQL JDBC driver when connecting to a MySQL 5.6 database):

1031

20

558

1600

626

When I do the same via Connector/J to a MariaDB 10.1.29 database the string representation of the number via getString() adds a trailing .0 as follows:

1031.0

20.0

558.0

1600.0

626.0

I thought at first it might be a Connector/J or Mariadb server setting, but I can't find anything, so looks like incompatible behavior.