JAVA中Iterator的具体作用？

Question

JAVA中Iterator的具体作用？

Answer 1

1234List<String>&nbsp;list&nbsp;=&nbsp;new&nbsp;ArrayList<String>();for&nbsp;(Iterator<String>&nbsp;iter&nbsp;=&nbsp;list.iterator();&nbsp;iter.hasNext();)&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;String&nbsp;str&nbsp;=&nbsp;iter.next();}迭代器呀，上面就是用来遍历List的用法示例&nbsp;