Interesting behavior of JSP If tag for comparing Enum value

If anyone like to compare a Enum value with JSP if tag there is a little surprise for him. JSP if tag do not support to compare a enum value directly in the test condition. For example a java Enum Employee.


public enum Employee {
    PART_TIME,
    FULL_TIME;
}


Now if you want to compare the Enum value in jsp if tag directly like following,

<c:if test="${bean.employee == '<%=Employee.PART_TIME%>'}">
.........
</c:if>


JSP generates error. But if you assign the value to a variable and compare then this is allowed as following


<c:set var="partTime" value="<%=Employee.PART_TIME%>"/>
<c:if test="${bean.employee == partTime'}">
.........
</c:if>


By Md. Shahjalal

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