Servlet API In Java | Servlet API In Java In Hindi

Servlet API

The javax.servlet and javax.servlet.http packages represent interfaces and classes for servlet api.

The javax.servlet package contains many interfaces and classes that are used by the servlet or web container. These are not specific to any protocol.

The javax.servlet.http package contains interfaces and classes that are responsible for http requests only.

Fig: Servlet API

Interfaces in javax.servlet package

There are many interfaces in javax.servlet package. They are as follows:

1.    Servlet

2.    ServletRequest

3.    ServletResponse

4.    RequestDispatcher

5.    ServletConfig

6.    ServletContext

7.    SingleThreadModel

8.    Filter

9.    FilterConfig

10.                       FilterChain

11.                       ServletRequestListener

12.                       ServletRequestAttributeListener

13.                       ServletContextListener

14.                       ServletContextAttributeListener

 

Classes in javax.servlet package

There are many classes in javax.servlet package. They are as follows:

1.    GenericServlet

2.    ServletInputStream

3.    ServletOutputStream

4.    ServletRequestWrapper

5.    ServletResponseWrapper

6.    ServletRequestEvent

7.    ServletContextEvent

8.    ServletRequestAttributeEvent

9.    ServletContextAttributeEvent

10.                       ServletException

11.                       UnavailableException

Interfaces in javax.servlet.http package

There are many interfaces in javax.servlet.http package. They are as follows:

1.    HttpServletRequest

2.    HttpServletResponse

3.    HttpSession

4.    HttpSessionListener

5.    HttpSessionAttributeListener

6.    HttpSessionBindingListener

7.    HttpSessionActivationListener

8.    HttpSessionContext (deprecated now)

Classes in javax.servlet.http package

There are many classes in javax.servlet.http package. They are as follows:

1.    HttpServlet

2.    Cookie

3.    HttpServletRequestWrapper

4.    HttpServletResponseWrapper

5.    HttpSessionEvent

6.    HttpSessionBindingEvent

7.    HttpUtils (deprecated now)