com.liferay.portal.kernel.portlet
Interfaces 
ConfigurationAction
FriendlyURLMapper
LiferayPortletConfig
LiferayPortletRequest
LiferayPortletResponse
LiferayPortletSession
LiferayPortletURL
LiferayRenderResponse
PortletBag
PortletLayoutListener
ResourceServingConfigurationAction
Route
Router
Classes 
BaseConfigurationAction
BaseFriendlyURLMapper
DefaultFriendlyURLMapper
DynamicRenderRequest
FriendlyURLMapperThreadLocal
LiferayPortlet
LiferayPortletMode
LiferayWindowState
NoRedirectActionResponse
PortletBagPool
PortletClassLoaderUtil
PortletFilterUtil
PortletModeFactory
PortletURLWrapper
ProtectedActionRequest
ProtectedRenderRequest
WindowStateFactory
Exceptions 
PortletLayoutListenerException