com.liferay.portal.kernel.portlet
Interfaces 
ConfigurationAction
FriendlyURLMapper
LiferayPortletConfig
LiferayPortletContext
LiferayPortletRequest
LiferayPortletRequestDispatcher
LiferayPortletResponse
LiferayPortletSession
LiferayPortletURL
LiferayRenderResponse
PortletBag
PortletContainer
PortletLayoutListener
ResourceServingConfigurationAction
Route
Router
Classes 
ActionResult
BaseConfigurationAction
BaseFriendlyURLMapper
DefaultConfigurationAction
DefaultFriendlyURLMapper
DynamicActionRequest
DynamicEventRequest
DynamicRenderRequest
DynamicResourceRequest
FriendlyURLMapperThreadLocal
LiferayPortlet
LiferayPortletMode
LiferayWindowState
NoRedirectActionResponse
PortletBagPool
PortletClassLoaderUtil
PortletConfigurationLayoutUtil
PortletContainerUtil
PortletFilterUtil
PortletJSONUtil
PortletModeFactory
PortletModeFactory_IW
PortletParameterUtil
PortletResponseUtil
PortletURLWrapper
ProtectedActionRequest
ProtectedRenderRequest
RestrictPortletServletRequest
WindowStateFactory
WindowStateFactory_IW
Exceptions 
PortletContainerException
PortletLayoutListenerException