EL get value of a HashMap by Integer key

Question

I have this HashMap:

    Map odometerMap = new LinkedHashMap();
    odometerMap.put(0, getLocaleForKey(\"drop-d         


        

Answer 1

In EL, numbers are treated as Long. It's looking for a Long key. It'll work if you use Long instead of Integer as map key.

Map<Long, String> odometerMap = new LinkedHashMap<Long, String>();
odometerMap.put(0L, getLocaleForKey("drop-down.any"));
odometerMap.put(1L, "< 1000");
// ...

Answer 2

An alternative could be using a String as the key

Map<String, String> odometerMap;

.. and:

<c:out value="${odometerMap['2']}"/>

But, it's better to use a List of Strings since your key doesn't have any clear meaning:

List<String> odometers = new ArrayList<String>();
odometers.add(getLocaleForKey("drop-down.any"));
// etc

.. and:

<c:out value="${odometers[2]}"/>