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Title: toBeBetterJavaer/docs/java8/optional.md at master · juncan/toBeBetterJavaer · GitHub

Open Graph Title: toBeBetterJavaer/docs/java8/optional.md at master · juncan/toBeBetterJavaer

X Title: toBeBetterJavaer/docs/java8/optional.md at master · juncan/toBeBetterJavaer

Description: 一份通俗易懂、风趣幽默的Java学习指南，内容涵盖Java基础、Java并发编程、Java虚拟机、Java企业级开发、Java面试等核心知识点。学Java，就认准Java 程序员进阶之路😄 - toBeBetterJavaer/docs/java8/optional.md at master · juncan/toBeBetterJavaer

Open Graph Description: 一份通俗易懂、风趣幽默的Java学习指南，内容涵盖Java基础、Java并发编程、Java虚拟机、Java企业级开发、Java面试等核心知识点。学Java，就认准Java 程序员进阶之路😄 - juncan/toBeBetterJavaer

X Description: 一份通俗易懂、风趣幽默的Java学习指南，内容涵盖Java基础、Java并发编程、Java虚拟机、Java企业级开发、Java面试等核心知识点。学Java，就认准Java 程序员进阶之路😄 - juncan/toBeBetterJavaer

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https://github.com/juncan/toBeBetterJavaer/blob/master/docs/java8/optional.md#01没有-optional-会有什么问题
https://github.com/juncan/toBeBetterJavaer/blob/master/docs/java8/optional.md#02optional-是如何解决这个问题的
https://github.com/juncan/toBeBetterJavaer/blob/master/docs/java8/optional.md#03创建-optional-对象
https://github.com/juncan/toBeBetterJavaer/blob/master/docs/java8/optional.md#04判断值是否存在
https://github.com/juncan/toBeBetterJavaer/blob/master/docs/java8/optional.md#05非空表达式
https://github.com/juncan/toBeBetterJavaer/blob/master/docs/java8/optional.md#06设置获取默认值
https://github.com/juncan/toBeBetterJavaer/blob/master/docs/java8/optional.md#07获取值
https://github.com/juncan/toBeBetterJavaer/blob/master/docs/java8/optional.md#08过滤值
https://github.com/juncan/toBeBetterJavaer/blob/master/docs/java8/optional.md#09转换值
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可以说是2022年全网最全的学习和找工作的PDF资源了https://tobebetterjavaer.com/pdf/programmer-111.html
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