Java 8 stream map on entry set

Question

I\'m trying to perform a map operation on each entry in a Map object.

I need to take a prefix off the key and convert the value from one type to another

Answer 1

Question might be a little dated, but you could simply use AbstractMap.SimpleEntry<> as follows:

private Map mapConfig(
    Map input, String prefix) {
       int subLength = prefix.length();
       return input.entrySet()
          .stream()
          .map(e -> new AbstractMap.SimpleEntry<>(
               e.getKey().substring(subLength),
               AttributeType.GetByName(e.getValue()))
          .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));

any other Pair-like value object would work too (ie. ApacheCommons Pair tuple).