Servlet api & servlet http package
- 1. Advanced java programming Servlet API & Servlet Http package By P.Abinaya
- 3. Two packages contain the classes and interfaces that are required to build servlets. Then are javax.servlet and javax.servlet.http. The Servelt API has been in a process of ongoing development and enhancement. The current servlet specification is version 2.4.
- 5. The javax.servlet.http package contains a number of classes and interfaces that describe and define the contracts between a servlet class running under the HTTP protocol and the runtime environment provided for an instance of such a class by a conforming servlet container.
- 6. init() Service() Destroy() That methods are the life cycle methods of servlet. The getServletConfig() method is called by the servlet to obtain initialization parameter.
- 7. HttpServletRequest Extends the ServletRequest interface to provide request information for HTTP servlets. HttpServletResponse Extends the ServletResponse interface to provide HTTP-specific functionality in sending a response.
- 8. The javax.servlet.http package contains a number of interfaces and classes that are commonly used by servlet developers. That its functionality makes it easy to build servlets that work with HTTP requests and responses.
- 9. The HttpServletRequest Interface Extends the ServletRequest interface to provide request information for HTTP servlets. The HttpServletRequest Interface Extends the ServletResponse interface to provide HTTP-specific functionality in sending a response.
- 10. The Cookie class encapsulates a cookie. A cookie is stored on a client and contains state information. Some of the information that is saved for each cookie includes the following: o The name of the cookie. o The value of the cookie. o The expiration date of the cookie. o The domain and path of the cookie.
- 11. The HttpServlet class provides specialized methods that handle the various types of HTTP requests. The methods are doDelet() DoGet() doHead() doOptions() doPut() doTrace().