Each implicit object has a class or interface type defined in a core Java technology or Java 

Servlet API package, as shown in 

TABLE 2 2

.

TABLE 2 2 

Implicit Objects Available in JSP Pages

Implicit Variable

Of Type

What It Represents

Scope

request

protocol dependent subtype of

: 

The request triggering the 

request

javax.servlet.ServletRequest

service invocation.

e.g:

javax.servlet.HttpServletRequest

response

protocol dependent subtype of

: 

The response to the request.

page

javax.servlet.ServletResponse

e.g:

javax.servlet.HttpServletResponse

pageContext

javax.servlet.jsp.PageContext

The page context for this JSP 

page

page.

session

javax.servlet.http.HttpSession

The session object created for 

session

the requesting client (if any).

This variable is only valid for 

Http protocols.

application

javax.servlet.ServletContext

The servlet context obtained 

application

from the servlet configuration 

object (as in the call 

getServletConfig().get

Context()

 )

out

javax.servlet.jsp.JspWriter

An object that writes into the 

page

output stream. 

config javax.servlet.ServletConfig

The 

ServletConfig

 for this 

page

JSP page

page

java.lang.Object

the instance of this page's 

page

implementation class processing 

the current request

1

1. When the scripting language is  java  then  page  is a synonym for  this  in the body of the page.

53

JavaServer Pages 1.1 Specification  

November 30, 1999