How to compare 2 values using jstl - spring

Question

I have lists in controller
List l=serviceClientServiceImpl.getSavedParents(clientId);
uiModel.addAttribute("savedParents",l);
List<Parent> parentList =
(List<Parent>) serviceClientServiceImpl.getParents("Parent",Long.valueOf(clientId));
uiModel.addAttribute("parentList", parentList);
and I am retrieving it in jsp like the follow
<ul style="max-width: 300px;" class="nav nav-pills nav-stacked" id="menuId">
<c:forEach items="${parentList}" var="test">
<li ><a href="#" value="${test.id}-${test.category}" id="${parent.id}" onclick="return getQuestions(this);" >
<input type="checkbox" value="${test.id}">${test.name }</a></li>
</c:forEach>
</ul>
vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
<c:forEach items="${savedParents}" var="test1">
<ul style="max-width: 300px;" class="nav nav-pills nav-stacked">
<li class="active"><a href="#" value="${test1.id}" onclick="return getQuestions(this);">
<input type="checkbox" value="${test1.id}"></a></li>
</ul>
</c:forEach>
Now I want to merge the the both and where ever test.id equals to test1.id then I want to add an html class="active"
I tried the following way
<ul style="max-width: 300px;" class="nav nav-pills nav-stacked" id="menuId">
<c:forEach items="${parentList}" var="test">
<c:forEach items="${savedParents}" var="test1">
<c:when test3="${test.id}==${test1.id }">
<li ><a href="#" class="active" value="${test.id}-${test.category}" id="${parent.id}" onclick="return getQuestions(this);" >
<input type="checkbox" value="${test.id}">${test.name }</a></li>
</c:when>
<c:otherwise>
<li ><a href="#" value="${test.id}-${test.category}" id="${parent.id}" onclick="return getQuestions(this);" >
<input type="checkbox" value="${test.id}">${test.name }</a></li>
</c:otherwise>
</c:forEach>
<%-- <li ><a href="#" value="${test.id}-${test.category}" id="${parent.id}" onclick="return getQuestions(this);" >
<input type="checkbox" value="${test.id}">${test.name }</a></li> --%>
</c:forEach>
</ul>
vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
but I am getting error in eclipse
Multiple annotations found at this line:
- Missing required attribute
"test"
- Undefined attribute name
"test3"
- Missing required attribute
"test"
- Undefined attribute name
"test3"
Can any body help me in this?

Answer 1

Try comparing the strings this way
<c:when test="${test.id == test1.id }">
you could also use the eq instead of ==
<c:when test="${test.id eq test1.id }">

Answer 2

It should be <c:when test= instead of <c:when test3=
try with c:if as well
<c:set var="id1" value="2" />
<c:set var="id" value="2" />
<c:if test="${id == id1 }">
Equal
</c:if>
OR
<c:set var="id1" value="2" />
<c:set var="id" value="2" />
<c:choose>
<c:when test="${id == id1 }">
Equal
</c:when>
<c:otherwise>
Not equal
</c:otherwise>
</c:choose>
Read more JSTL Core conditional Tag
Note:
complete conditional expression must be enclosed inside single ${}
c:when tag should be enclosed inside the c:choose tag
The <c:choose> works like a Java switch statement in that it lets you choose between a number of alternatives. Where the switch statement has case statements, the <c:choose> tag has <c:when> tags. A a switch statement has default clause to specify a default action and similar way <c:choose> has <c:otherwise> as default clause.