response,
false,
PageContext.DEFAULT_BUFFER,
false
 );
JSPWriter out = pageContext.getOut();
// ....
// .... the body goes here using "out"
// ....
out.flush();
}
You can find the complete listing of 
javax.servlet.jsp.JspWriter
 in Chapter 6.
With buffering turned on, you can still use a redirect method in a scriptlet in a .
jsp
 file, by 
invoking 
response.redirect(someURL)
 directly.
3.4
Precompilation
A JSP page that is using the HTTP protocol will receive HTTP requests.  JSP 1.1 compliant 
containers must support a simple 
precompilation protocol
, as well as some basic 
reserved 
parameter names
.  Note that the precompilation protocol should not be confused with the 
notion of compiling a JSP page into a Servlet class (Appendix C).
3.4.1
Request Parameter Names
All request parameter names that start with the prefix "jsp" are reserved by the JSP 
specification and should not be used by any user or implementation except as indicated by 
the specification.
All JSPs pages should ignore (not depend on) any parameter that starts with "jsp_"
3.4.2
Precompilation Protocol
A request to a JSP page that has a request parameter with name "jsp_precompile" is a 
precompilation
request.
  The "jsp_precompile" parameter may have no value, or may have 
values "true" or "false".  In all cases, the request should not be delivered to the JSP page.
Chapter 3
The JSP Container
80




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