Servlet Interface
- Servlet interface provides common behavior to all the servlets.
- Servlet interface defines methods that all servlets must implement.
- Servlet interface needs to be implemented for creating any servlet.
- It provides 3 life cycle methods that are used to initialize the servlet, to service the requests, and to destroy the servlet and 2 non-life cycle methods.
- Methods of Servlet interface
- There are 5 methods in the Servlet interface.
- The init, service and destroy are the life cycle methods of servlet.
- These are invoked by the web container.
- public void init(ServletConfig config): initializes the servlet. It is the life cycle method of servlet and invoked by the web container only once.
- public void service(ServletRequest request,ServletResponse response) :provides response for the incoming request. It is invoked at each request by the web container.
- public void destroy(): is invoked only once and indicates that servlet is being destroyed.
- public ServletConfig getServletConfig(): returns the object of ServletConfig.
- public String getServletInfo(): returns information about servlet such as writer, copyright, version etc.
Example:
Tags:
Java
