# Package javax.servlet

The javax.servlet package contains a number of classes and interfaces that describe and define the contracts between a servlet class and the runtime environment provided for an instance of such a class by a conforming servlet container.

See: Description

Interface Summary
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 | TODO SERVLET3 - Add comments
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 | TODO SERVLET3 - Add comments
SingleThreadModel | Deprecated As of Java Servlet API 2.4, with no direct replacement.

Class Summary
Class | Description
--- | ---
AsyncEvent | TODO SERVLET3 - Add comments
GenericServlet | Defines a generic, protocol-independent servlet.
HttpConstraintElement |
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 `readLine` method 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 Summary
Enum | Description
--- | ---
DispatcherType |
SessionTrackingMode |

Exception Summary
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.

## Package javax.servlet Description

The javax.servlet package contains a number of classes and interfaces that describe and define the contracts between a servlet class and the runtime environment provided for an instance of such a class by a conforming servlet container.