# Uses of Package
javax.portlet

Packages that use javax.portlet
javax.portlet: The javax.portlet package defines the API for Java Portlet Specification V2.0.
javax.portlet.filter: The javax.portlet.filter package defines the filter APIs for the Java Portlet Specification.

Classes in javax.portlet used by javax.portlet
ActionRequest: The `ActionRequest` represents the request sent to the portlet to handle an action. It extends the ClientDataRequest interface and provides action request information to portlets.
ActionResponse: The `ActionResponse` interface represents the portlet response to an action request.
BaseURL: The `BaseURL` defines the basic capabilities of a portlet URL pointing back to the portlet.
CacheControl: The `CacheControl` interface represents cache settings for a piece of markup.
ClientDataRequest: The `ClientDataRequest` represents the request information of the HTTP request issued from the client to the portal. It extends the PortletRequest interface.
Event: The `Event` interface represents an event that the portlet has received in the event processing phase.
EventPortlet: The `EventPortlet` interface allows portlets receiving events.
EventRequest: The `EventRequest` represents the request sent to the portlet to handle an event.
EventResponse: The `EventResponse` interface represents the portlet response to an event request.
MimeResponse: The `MimeResponse` defines the base interface to assist a portlet in returning MIME content.
PortalContext: The `PortalContext` interface gives the portlet the ability to retrieve information about the portal calling this portlet.
Portlet: The `Portlet` interface is used by the portlet container to invoke the portlets.
PortletConfig: The `PortletConfig` interface provides the portlet with its configuration.
PortletContext: The `PortletContext` interface defines a portlet view of the portlet container.
PortletException: The `PortletException` class defines a general exception that a portlet can throw when it is unable to perform its operation successfully.
PortletMode: The `PortletMode` class represents the possible modes that a portlet can assume.
PortletModeException: The `PortletModeException` is thrown when a portlet tries to use or set a portlet mode that is not supported by the current runtime environment or the portlet.
PortletPreferences: The `PortletPreferences` interface allows the portlet to store configuration data.
PortletRequest: The `PortletRequest` defines the base interface to provide client request information to a portlet.
PortletRequest.P3PUserInfos: P3P user information constants.
PortletRequestDispatcher: The `PortletRequestDispatcher` interface defines an object that receives requests from the client and sends them to the specified resources (such as a servlet, HTML file, or JSP file) on the server.
PortletResponse: The `PortletResponse` defines the base interface to assist a portlet in creating and sending a response to the client.
PortletSecurityException: A portlet should throw a `PortletSecurityException` when a call fails because of security reasons. Additionally it can be thrown by the portal/portlet-container.
PortletSession: The `PortletSession` interface provides a way to identify a user across more than one request and to store transient information about that user.
PortletURL: The `PortletURL` interface represents a URL that reference the portlet itself.
ReadOnlyException: The `ReadOnlyException` is thrown when a portlet tries to change the value for a read-only preference attribute.
RenderRequest: The `RenderRequest` represents the request sent to the portlet to handle a render.
RenderResponse: The `RenderResponse` defines an object to assist a portlet in sending a response to the portal.
ResourceRequest: The `ResourceRequest` interface represents the request send to the portlet for rendering resources.
ResourceResponse: The `ResourceResponse` defines an object to assist a portlet for rendering a resource.
ResourceServingPortlet: The `ResourceServingPortlet` interface allows serving resources through the portlet.
ResourceURL: The `ResourceURL` defines a resource URL that when clicked will result in a `serveResource` call of the `ResourceServingPortlet` interface.
StateAwareResponse: The `StateAwareResponse` represents a response that can modify state information or send events. It extends the PortletResponse interface.
ValidatorException: The `ValidatorException` is thrown by the `validate` method of a PreferencesValidator when the validation of a preference failed.
WindowState: The `WindowState` class represents the possible window states that a portlet window can assume.
WindowStateException: The `WindowStateException` is thrown when a portlet tries to use a window state that is not supported by the current runtime environment or the portlet.

Classes in javax.portlet used by javax.portlet.filter
ActionRequest: The `ActionRequest` represents the request sent to the portlet to handle an action. It extends the ClientDataRequest interface and provides action request information to portlets.
ActionResponse: The `ActionResponse` interface represents the portlet response to an action request.
CacheControl: The `CacheControl` interface represents cache settings for a piece of markup.
ClientDataRequest: The `ClientDataRequest` represents the request information of the HTTP request issued from the client to the portal. It extends the PortletRequest interface.
Event: The `Event` interface represents an event that the portlet has received in the event processing phase.
EventRequest: The `EventRequest` represents the request sent to the portlet to handle an event.
EventResponse: The `EventResponse` interface represents the portlet response to an event request.
MimeResponse: The `MimeResponse` defines the base interface to assist a portlet in returning MIME content.
PortalContext: The `PortalContext` interface gives the portlet the ability to retrieve information about the portal calling this portlet.
PortletContext: The `PortletContext` interface defines a portlet view of the portlet container.
PortletException: The `PortletException` class defines a general exception that a portlet can throw when it is unable to perform its operation successfully.
PortletMode: The `PortletMode` class represents the possible modes that a portlet can assume.
PortletModeException: The `PortletModeException` is thrown when a portlet tries to use or set a portlet mode that is not supported by the current runtime environment or the portlet.
PortletPreferences: The `PortletPreferences` interface allows the portlet to store configuration data.
PortletRequest: The `PortletRequest` defines the base interface to provide client request information to a portlet.
PortletResponse: The `PortletResponse` defines the base interface to assist a portlet in creating and sending a response to the client.
PortletSession: The `PortletSession` interface provides a way to identify a user across more than one request and to store transient information about that user.
PortletURL: The `PortletURL` interface represents a URL that reference the portlet itself.
RenderRequest: The `RenderRequest` represents the request sent to the portlet to handle a render.
RenderResponse: The `RenderResponse` defines an object to assist a portlet in sending a response to the portal.
ResourceRequest: The `ResourceRequest` interface represents the request send to the portlet for rendering resources.
ResourceResponse: The `ResourceResponse` defines an object to assist a portlet for rendering a resource.
ResourceURL: The `ResourceURL` defines a resource URL that when clicked will result in a `serveResource` call of the `ResourceServingPortlet` interface.
StateAwareResponse: The `StateAwareResponse` represents a response that can modify state information or send events. It extends the PortletResponse interface.
WindowState: The `WindowState` class represents the possible window states that a portlet window can assume.
WindowStateException: The `WindowStateException` is thrown when a portlet tries to use a window state that is not supported by the current runtime environment or the portlet.