I have something like this <c:set var=x value=a /> Supposing I have a map

Question

Asked: May 27, 20262026-05-27T17:30:08+00:00 2026-05-27T17:30:08+00:00

I have something like this

<c:set var="x" value="a" />

Supposing I have a map like this

Map<String, String> map = new HashMap<>();
map.put("a", "1");
map.put("b", "2");
request.setAttribute("map", map);

I want to use variable ${x} as map key in an EL expression, like this

${map.x}

(which is wrong) in order to print

(or 2) depending on the value of ${x}

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Editorial Team · Answer 1 · 2026-05-27T17:30:09+00:00

Editorial Team

You need to use the brace notation [] in order to use dynamic keys on a Map.

${map[x]}

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