how to check if divisible by 2 in <c:if>

[Rajesh Khan]

Hi i am trying to check a condition if its divisible by two using

<c:if test="${count % 2}"> Something/.. </c:if>

but looks like % jstl doesn't recognize % any idea how i can check if something is divisible by two

[Bear Bibeault]

Rajesh Khan wrote:
but looks like % jstl doesn't recognize % any idea how i can check if something is divisible by two

This has nothing to do with the JSTL but the EL.

And what evidence leads you to believe this?

[Rajesh Khan]

Yep.. sorry I mean EL.
Any idea how i can check if a number is divisible by 2 using <c:if> tag ??

[Devaka Cooray]

% and mod are modulus operators in EL. In other words, it returns the result of the given modulo operation, which is NOT a boolean value.

[Bear Bibeault]

How would you do it in Java? What makes you think you can't use %?

[Stefan Evans]

1 % 2 == 1
2 % 2 == 0
3 % 2 == 1
4 % 2 == 0
...
10 % 2 == 0
11 % 2 == 1

Perhaps the check you want is "count % 2 == 0" ?
In some languages a check of "if (count % 2)" is sufficient, because zero gets interpreted as false in that language.
This is not the case in EL though. You need to make the comparison to zero explicitly.

<c:if test="${count % 2 == 0}">
  The number is even!
</c:if>