HttpServletRequest request
Contains the request object.
HttpServletResponse response
Contains the response object.
PageContext pageContext
State for the current page.
HttpSession session
The current session. session is available only
when the
session directive
is true.
ServletContext application
The current application.
JspWriter out
The buffered stream to the HTTP response.
Servlet page
The current servlet.
Throwable exception
For error pages, the exception thrown from the broken page.