See: Description
| Interface | Description | 
|---|---|
| AsyncContext | TODO SERVLET3 - Add comments | 
| AsyncListener | TODO SERVLET3 - Add comments | 
| Filter | A filter is an object that performs filtering tasks on either the request to
 a resource (a servlet or static content), or on the response from a resource,
 or both. | 
| FilterChain | A FilterChain is an object provided by the servlet container to the developer
 giving a view into the invocation chain of a filtered request for a resource. | 
| FilterConfig | A filter configuration object used by a servlet container to pass information
 to a filter during initialization. | 
| FilterRegistration | |
| FilterRegistration.Dynamic | |
| Registration | Common interface for the registration of Filters and Servlets. | 
| Registration.Dynamic | |
| RequestDispatcher | Defines an object that receives requests from the client and sends them to
 any resource (such as a servlet, HTML file, or JSP file) on the server. | 
| Servlet | Defines methods that all servlets must implement. | 
| ServletConfig | A servlet configuration object used by a servlet container to pass
 information to a servlet during initialization. | 
| ServletContainerInitializer | ServletContainerInitializers (SCIs) are registered via an entry in the
 file META-INF/services/javax.servlet.ServletContainerInitializer that must be
 included in the JAR file that contains the SCI implementation. | 
| ServletContext | Defines a set of methods that a servlet uses to communicate with its servlet
 container, for example, to get the MIME type of a file, dispatch requests, or
 write to a log file. | 
| ServletContextAttributeListener | Implementations of this interface receive notifications of changes to the
 attribute list on the servlet context of a web application. | 
| ServletContextListener | Implementations of this interface receive notifications about changes to the
 servlet context of the web application they are part of. | 
| ServletRegistration | TODO SERVLET3 - Add comments | 
| ServletRegistration.Dynamic | |
| ServletRequest | Defines an object to provide client request information to a servlet. | 
| ServletRequestAttributeListener | A ServletRequestAttributeListener can be implemented by the
 developer interested in being notified of request attribute
 changes. | 
| ServletRequestListener | A ServletRequestListener can be implemented by the developer
 interested in being notified of requests coming in and out of
 scope in a web component. | 
| ServletResponse | Defines an object to assist a servlet in sending a response to the client. | 
| SessionCookieConfig | Configures the session cookies used by the web application associated with
 the ServletContext from which this SessionCookieConfig was obtained. | 
| SingleThreadModel | Deprecated As of Java Servlet API 2.4, with no direct replacement. | 
| Class | Description | 
|---|---|
| AsyncEvent | TODO SERVLET3 - Add comments | 
| GenericServlet | Defines a generic, protocol-independent servlet. | 
| HttpConstraintElement | Equivalent of  HttpConstraintfor
 programmatic configuration of security constraints. | 
| HttpMethodConstraintElement | |
| MultipartConfigElement | |
| ServletContextAttributeEvent | This is the event class for notifications about changes to the attributes of
 the servlet context of a web application. | 
| ServletContextEvent | This is the event class for notifications about changes to the servlet
 context of a web application. | 
| ServletInputStream | Provides an input stream for reading binary data from a client request,
 including an efficient  readLinemethod for reading data one line
 at a time. | 
| ServletOutputStream | Provides an output stream for sending binary data to the client. | 
| ServletRequestAttributeEvent | This is the event class for notifications of changes to the attributes of the
 servlet request in an application. | 
| ServletRequestEvent | Events of this kind indicate lifecycle events for a ServletRequest. | 
| ServletRequestWrapper | Provides a convenient implementation of the ServletRequest interface that can
 be subclassed by developers wishing to adapt the request to a Servlet. | 
| ServletResponseWrapper | Provides a convenient implementation of the ServletResponse interface that
 can be subclassed by developers wishing to adapt the response from a Servlet. | 
| ServletSecurityElement | 
| Enum | Description | 
|---|---|
| DispatcherType | |
| SessionTrackingMode | 
| Exception | Description | 
|---|---|
| ServletException | Defines a general exception a servlet can throw when it encounters
 difficulty. | 
| UnavailableException | Defines an exception that a servlet or filter throws to indicate that it is
 permanently or temporarily unavailable. | 
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