How to use

mapIterator

method

in

org.apache.commons.collections4.IterableMap

@Override
public MapIterator<K, V> mapIterator() {
  if (map instanceof IterableMap) {
    final MapIterator<K, V> it = ((IterableMap<K, V>) map).mapIterator();
    return UnmodifiableMapIterator.unmodifiableMapIterator(it);
  }
  final MapIterator<K, V> it = new EntrySetMapIterator<>(map);
  return UnmodifiableMapIterator.unmodifiableMapIterator(it);
}

@Benchmark
public long test9_UsingApacheIterableMap() throws IOException {
  long i = 0;
  MapIterator<Integer, Integer> it = iterableMap.mapIterator();
  while (it.hasNext()) {
    i += it.next() + it.getValue();
  }
  return i;
}