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

Simply translating the "old for loop way" into streams:

private Map mapConfig(Map input, String prefix) {
    int subLength = prefix.length();
    return input.entrySet().stream()
            .collect(Collectors.toMap(
                   entry -> entry.getKey().substring(subLength), 
                   entry -> AttributeType.GetByName(entry.getValue())));
}