a question about Jsp

do these tags have to be the first thing in a jsp file (like inside head in html) to avoid caching or can i put it at the end of the file ,

<%

response.setHeader("Pragma","no-cache");

response.setHeader("Cache-Control","no-cache");

response.setHeader("Cache-Control","max-age=0");

response.setHeader("Cache-Control", "no-store");

response.setHeader("Cache-Control", "max-stale=0");

%>

thanks

[458 byte] By [dumbmastera] at [2007-11-27 2:52:13]