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【小家java】java8新特性之---Optional的使用，避免空指针，代替三目运算符

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Java8新特性之空指针异常的克星Optional类

Java8新特性系列我们已经介绍了Stream、Lambda表达式、DateTime日期时间处理，最后以“NullPointerException” 的克星Optional类的讲解来收尾。背景作为开发人员每天与NullPointerException斗智斗勇。每接收到参数或调用方法获得值得判断一下是...

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【Java8新特性】不了解Optional类，简历上别说你懂Java8！！

什么是Optional类？Optional类(java.util.Optional) 是一个容器类，代表一个值存在或不存在，原来用 null 表示一个值不存在，现在 Optional 可以更好的表达这个概念。并且可以避免空指针异常。Optional类常用方法：Optional.of(T t) : 创...

java8特性 Optional 工具类

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java8新特性（三）_Optional类的使用

说实话，我第一次知道这个东西是从阿里规约中，因为公司前一段时间一直在搞代码审核，我的代码写的就感觉很烂，就像规范下。让别人看起来没那么烂。于是就开始看阿里规约，在看到NPE处理的时候，上面提到用Optional类进行处理。这就是我第一次知道这个东东。 Optional简介 Optional 类是一个...

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