How do i set check-boxes checked on particular Value using JSTL?

I am using JSTL and multiple check-boxes, i just want to checked some check-boxes by default

<form:checkboxes path="userName" items="${UserList}" id="userName" class="check-margin-top"/>

and I am doing like this

<form:checkboxes path="userName" items="${UserList}" id="userName"class="check-margin-top"
<c:forEach var='list' items="${UserList}"> 
<c:if test="${list == '1'}"checked="checked"></c:if>
</c:forEach>
></form:checkboxes>