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Problem about EL ....

Jack Lam

Joined: Jul 09, 2004
Posts: 17
Hi everyone,

i have a problem in studying El...

when i create a Map in <% %> area:
SortedMap map = new SortedMap;
map.put("key", "value");
and want to display the data by using EL

but it show me nothing....
what is the reason?
it can show me ${header["user-agent"]}
that mean the page can run El at my tomcat..

also, do EL only for display the date?
(for replace the <%= XX %> tag)
how do i create instance by using EL?

i always get confuse with the format ${aaa.bbb.ccc}


SCJP 1.4 , SCWCD (in progress)
Nitish Bahadur
Ranch Hand

Joined: Aug 25, 2003
Posts: 118
The map created in the scriptlet was never stored in one of the JSP scopes.

Map map = new HashMap();
map.put("key", "value");
pageContext.setAttribute("map", map);

<c ut value='${map["key"]}'/>
I agree. Here's the link:
subject: Problem about EL ....
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