No value present
时间: 2023-11-30 14:03:08 浏览: 2299
"No value present"是一个常见的异常消息,它表示在使用Optional类的get()方法时发生了异常。在get()方法中,如果Optional中没有值,就会抛出NoSuchElementException异常,并显示"No value present"的错误消息。这意味着在使用get()方法之前,我们应该使用isPresent()方法来检查Optional对象中是否有值。另外,我们还可以使用orElse()方法来避免异常,它会返回Optional对象中的值,如果值为空,则返回指定的替代值。所以,当遇到"No value present"的异常时,我们可以通过使用isPresent()方法或者orElse()方法来避免这个问题。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [解决java.util.NoSuchElementException: No value present 异常问题](https://blog.csdn.net/qq_39213969/article/details/105779112)[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^chatsearchT0_1"}}] [.reference_item style="max-width: 50%"]
- *2* *3* [Java8 新特性踩坑篇,java.util.NoSuchElementException: No value present](https://blog.csdn.net/weixin_45031612/article/details/125287048)[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^chatsearchT0_1"}}] [.reference_item style="max-width: 50%"]
[ .reference_list ]
阅读全文