Does the JDBC connection failover require Postgres 10?

The Postgres JDBC driver offers a way to specify multiple hosts in the connection URL:

https://jdbc.postgresql.org/documentation/head/connect.html#connection-failover

However, it is unclear to me if that feature relies on the libpq feature introduced in Postgres 10:

https://www.postgresql.org/docs/current/static/libpq-connect.html#libpq-multiple-hosts

or if this is handled by the driver internally?

Thomas