I have sorted a HashMap
using Sort a Map<Key, Value> by values (Java) to that I have a LinkedHashMap
, i.e. an Iterable
which garantees iteration order.
Now, I'd like to retrieve a java.util.List
of the first n
entries of the map with a one-liner, if possible with a Java 8 Collection Stream API-technique.
I found how can i get two consecutive values from Iterator which explains that there's a possibility to do that with an array, but that's not elegant, differs from my intention to get a List
(although that can be transformed, but it's an unnecessary step) and requires an extra method.
Stream the entrySet
and limit the Stream
to the first n
elements:
List<Map.Entry<Key,Value>> firstN =
map.entrySet().stream().limit(n).collect(Collectors.toList());
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