JSP Lifecycle:
Translation Phase: JSP Page will be converted to Servlet.
Compilation Phase: The resulting servlet is compiled.
Instantiate and loading Phase: Instance will be created for the servlet ands it will be loaded to memory.
Call jspinit():Perform Initialization process.
Call _jspService(): this will be called upon each request.
Call jspDestroy(): the instance will be destroyed when not needed any more.
