How can I concatenate a string within a loop in JSTL/JSP?

Question

<c:forEach items="${myParams.items}" var="currentItem" varStatus="stat">
  <c:set var="myVar" value="<c:out var="myVar" />" />
</c:forEach>

I want to concatenate the values of currentItem.myVar and output it at the end of the loop, problem is I can't figure out how to do this...

(Preferably not using Java)

Answer 1

define a String variable using the JSP tags

"<%!

String test = new String(); %>"

then refer to that variable in your loop as

" test+= whaterver_value "

Answer 2

Perhaps this will work?

<c:forEach items="${myParams.items}" var="currentItem" varStatus="stat">
  <c:set var="myVar" value="${stat.first ? '' : myVar} ${currentItem}" />
</c:forEach>

Answer 3

You're using JSTL 2.0 right? You don't need to put around all variables. Have you tried something like this?

<c:forEach items="${myParams.items}" var="currentItem" varStatus="stat">
  <c:set var="myVar" value="${myVar}${currentItem}" />
</c:forEach>

Edit: Beaten by the above