The other guests had taken advantage of the Queen's absence,
and were resting in the shade:  however, the moment they saw her,
they hurried back to the game, the Queen merely remarking that a
moment's delay would cost them their lives.

  All the time they were playing the Queen never left off
quarrelling with the other players, and shouting `Off with his
head!' or `Off with her head!'  Those whom she sentenced were

    @Override
    public V next() {
      return nextEntry().getValue();
    }
  }

  /**
   * Custom Entry class used by EntryIterator.next(), that relays setValue changes to the underlying
   * map.
   */
  final class WriteThroughEntry implements Entry<K, V> {
    final K key; // non-null
    V value; // non-null

    WriteThroughEntry(K key, V value) {

    @Override
    public V next() {
      return nextEntry().getValue();
    }
  }

  /**
   * Custom Entry class used by EntryIterator.next(), that relays setValue changes to the underlying
   * map.
   */
  final class WriteThroughEntry implements Entry<K, V> {
    final K key; // non-null
    V value; // non-null

    WriteThroughEntry(K key, V value) {

  The other guests had taken advantage of the Queen's absence,
and were resting in the shade:  however, the moment they saw her,
they hurried back to the game, the Queen merely remarking that a
moment's delay would cost them their lives.

  All the time they were playing the Queen never left off
quarrelling with the other players, and shouting `Off with his
head!' or `Off with her head!'  Those whom she sentenced were