# Package org.simpleframework.http.session

Interface Summary
Interface | Description
--- | ---
Observer<T> | The `Observer` interface is used to observe the session activity within the session manager.
Session<T> | The `Session` object is a simple leased container for state within a web application.
SessionProvider<T> | The `SessionProvider` object is used to create sessions that are active for a given time period.

Class Summary
Class | Description
--- | ---
SessionManager<T> | The `SessionManager` object is used to create sessions that are active for a given time period.

Exception Summary
Exception | Description
--- | ---
SessionException | The `SessionException` is used to indicate that some operation failed when trying to access a session or when trying to perform some operation on an existing session.