Use with HashMap [duplicate]

Answer 1

Yes, this is perfectly acceptable.

When you use <c:forEach> to iterate over a Map, each item in the iteration is an instance of Map.Entry. So given your example:

<c:forEach var="type" items="${types}">
   Key is ${type.key}
   Value is ${type.value}
</c:forEach>

Answer 2

It works, you'll have type.key and type.value to play with in the loop.