Many books about JDBC and most of JDBC-related sample code floating around seems to assume that JDBC is used directly, meaning that database connection is established by the DriverManager, and is actually released when myJDBCConnection.close() method is called. In this case, all resources associated with this database connection, such as ResultSet and Statement objects (and whatever is used on the database side to implement them), are released as well.
There is a problem with this approach. When moving to
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