UnsupportedOperationException: The application must supply JDBC connections

Question

If I dont set anything programmatically and just call Configuration configuration = new Configuration().configure(); and use the hibernate.properties (as below)

Answer 1

An alternate way will be load all properties from hibernate.cfg.xml or hibernate.properties and overwrite only the one required programmatically.

Configuration config = new Configuration().configure();
config.setProperty("hibernate.connection.username", "xyz" );
config.setProperty("hibernate.connection.password", "password" );