Mapa de Java a Linkedhashmap con orden ascendente de claves

Map<String, Integer> unSortedMap = getUnSortedMap();

//LinkedHashMap preserve the ordering of elements in which they are inserted
LinkedHashMap<String, Integer> sortedMap = new LinkedHashMap<>();

unSortedMap.entrySet()
  .stream()
  .sorted(Map.Entry.comparingByKey())
  .forEachOrdered(x -> sortedMap.put(x.getKey(), x.getValue()));
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