CompositeIterator

CompositeIterator

 

可包括多个Iterator的Iterator

 

Set<Iterator<E>> iterators = new LinkedHashSet<>();

 

#public void add(Iterator<E> iterator)  新增一个iterator，同一个iterator只可add 1次

#public boolean hasNext()  以迭代方式挨个对Iterator进行hasNext

#public E next()  以迭代方式挨个对Iterator进行hasNext&&next

#public void remove()  throw new UnsupportedOperationException("CompositeIterator does not support remove()");