Part II: Closing Connections When you're done with a connection, you really should clean up after yourself. Implement the java.io.Closeable interface and add a close () method to the Connection ...

Interfaces and inner classes provide more sophisticated ways to organize and control the objects in your system. C++, for example, does not contain such mechanisms, although the clever programmer may ...

Implement the java.io.Closeable interface and add a close () method to the Connection interface and to your nested ManagedConnection class. A ManagedConnection object should tell its ConnectionManager ...