ConcurrentHashMap如何遍历
时间: 2023-10-17 07:32:27 浏览: 148
怎样遍历一个HashMap?
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要遍历ConcurrentHashMap,可以使用ConcurrentHashMap自带的keySet()方法获取键的集合。然后使用迭代器Iterator来遍历这个集合。在遍历的过程中,可以使用hasNext()方法来判断是否还有下一个元素,使用next()方法来获取下一个元素。在遍历的同时,如果有其他线程对ConcurrentHashMap进行修改,不会抛出ConcurrentModificationException异常,但是不能保证数据的一致性。迭代器保证的是,在创建迭代器时容器的状态。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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