Object Class
1-out – Jspwriter (equivalent to PrintWriter) class
2-request – HttpServletRequest class
3-response – HttpServletResponse class
4- session – Httpsession class
5-application – ServletContext class
6-exception – Exception class
7-page – It’s a synonym for “this” keyword of core java
8-pagecontext – Encapsulates use of server specific features
9- config – ServletConfig class