CollectionUtils.isEmpty什么意思
时间: 2023-05-26 10:03:39 浏览: 62
CollectionUtils.isEmpty是一个由Apache Commons Collections提供的静态方法。它用于判断给定的集合对象是否为空,即为null或不包含任何元素。如果集合为空,则该方法将返回true,否则返回false。
相关问题
CollectionUtils.isEmpty
CollectionUtils.isEmpty是Apache Commons Collections库中的一个方法,用于判断集合是否为空。它可以正常处理集合为null的情况,而不会引发空指针异常。<em>1</em><em>2</em><em>3</em>
#### 引用[.reference_title]
- *1* [集合判空CollectionUtils.isEmpty()](https://blog.csdn.net/m0_46845579/article/details/126315293)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}} ] [.reference_item]
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CollectionUtils.isEmpty()
CollectionUtils.isEmpty()是一个用于判断集合是否为空的方法。当传入的集合参数为null或者集合的大小为0时,该方法返回true;否则返回false。这个方法与List.isEmpty()方法的不同之处在于,当集合为null时,List.isEmpty()会报空指针异常,而CollectionUtils.isEmpty()则不会报错。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [CollectionUtils.isEmpty](https://blog.csdn.net/weixin_40074861/article/details/102680304)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
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