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Editorial Team
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Asked: 2026-05-17T01:17:40+00:00

Is nesting of EL Expressions in Ternary Operator allowed? What is wrong with the

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Is nesting of EL Expressions in Ternary Operator allowed?

What is wrong with the following expression?

<input class="text_field" type="text" name="receivedBy" id="receivedBy" style="width:250px;"  maxlength="64" value="${empty obj.val ? obj1.attr1.val ' ' obj2.attr1.val: obj3.val"}/>
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1 Answer

  1. Editorial Team

    You are actually not nesting EL expressions (nesting would look like ${foo${bar}baz} which is actually not possible). You are attempting to concat EL outcomes as a String. You cannot concat Strings in EL that way. Your best bet is to use c:set to preset it.

    <c:set var="obj1obj2val" value="${obj1.attr1.val} ${obj2.attr1.val}" />
<input value="${empty obj.val ? obj1obj2val : obj3.val}" />
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