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## Package org.apache.jetspeed.portlet

Interface Summary
Client | The `Client` interface represents the client device that the user connects to the portal with.
Portlet | The `Portlet` interface is used by the portlet container to invoke the portlet.
PortletAction | The `PortletAction` can be implemented to defined portlet-specific actions that need to be executed for specific URIs.
PortletConfig | The `PortletConfig` interface provides the portlet with its configuration.
PortletContext | The `PortletContext` interface defines a portlet's view of the portlet container within which each portlet is running.
PortletData | The `PortletData` contains information about the virtual instance of a portlet.
PortletLog | The `PortletLog` provides the portlet with the ability to log information, warning, or error texts.
PortletMessage | The `PortletMessage` can be used for inter-portlet communication.
PortletRequest | The `PortletRequest` encapsulates the request sent by the client to the portlet.
PortletResponse | The `PortletResponse` interface represents the response sent to the client device.
PortletSession | The `PortletSession` holds the user-specific data that the portlet needs to personalize the one global portlet instance.
PortletTitle | The `PortletTitle` interface has to be implemented if a portlet wants to support client, device, and/or user dependent titles.
PortletURI | A `PortletURI` represents a URI to a specific portlet function.
PortletWindow | The `PortletWindow` represents the window that encloses a portlet.
User | The `User` interface is an abstract view on the user-specific data.

Class Summary
Capability | Instances of the `Capability` class correspond to particular properties which can be assigned to the client devices.
DefaultPortletAction | The `DefaultPortletAction` is a portlet action with default parameters.
Portlet.Mode | The `Mode` class is a finite enumeration of the possible modes that a portlet can assume.
PortletWindow.State | The `State` class is a finite enumeration of the possible states that a window can assume.

Exception Summary
AccessDeniedException | The `AccessDeniedException` is thrown if a portlet attempts to access dynamic data in a manner that it is not allowed to.
PortletException | The `PortletException` class defines a general exception that a portlet can throw when it encounters difficulty.
UnavailableException | Use the `UnavailableException` when the instantiation of a portlet fails.

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