Edition name as a property for JDBC thin client

A question on Edition-Based Redefinition appeared on the OTN forum:

The purpose is to try to upgrade an app in production. For most application users they will keep using the pre-upgrade app connecting to the old edition by default, while at the same time some UAT users will test out the post-upgraded app on the new edition. The question is how will the Java app connect to a user schema to use the new edition