| Interface | Description | 
|---|---|
| BitsInput | This interface defines methods for reading data bits. | 
| BitsOutput | This interface defines methods for writing data bits. | 
| CommConnection | This interface defines a  Connectionto a logical serial port, which is aStreamConnection. | 
| CommPort | This interface defines a logical serial port, on which a  CommConnectioncan be open. | 
| Connection | This interface defines an open Connection. | 
| ConnectionFactory | This interface defines the API for  Connectionfactories. | 
| ContentConnection | |
| Datagram | |
| DatagramConnection | |
| InputConnection | This interface is implemented by a  Connectionthat is able to open anInputStream. | 
| OutputConnection | This interface is implemented by a  Connectionthat is able to open anOutputStream. | 
| StreamConnection | This interface defines a bidirectional connection: a connection on which an  InputStreamand anOutputStreamcan be open. | 
| StreamConnectionNotifier | 
| Class | Description | 
|---|---|
| ConnectionPermission | This class represents access  Permissionto open aConnection. | 
| Connector | This class defines methods for opening a  Connectionfrom an URL. | 
| Exception | Description | 
|---|---|
| ConnectionNotFoundException | This exception is thrown when a connection protocol is unknown. |