Java三元表达式-阿里云

记一次java中三元表达式的坑（避免踩坑）

一、问题重现代码很简单，a是包装类型Integer，初始值是null，b通过三元表达式进行赋值。运行一下这个代码就会出现空指针异常：为什么会出现这个现象呢？下面我们来分析一下：二、问题分析刚刚这个空指针现象很容易我们就想到类型转化上，三元表达式的类型转换同样要遵守一定的规则才可以。1、三元操作符类型...

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记录一个Java三元表达式中的陷阱

今天遇到一个奇怪的Java三元表达式中的空指针异常。特此记录。代码代码示意如下： Integer itemVO = null; Integer globleLatenessToleranceUseAlternate = null; Integer latenessToleranceUseAlte...

java三元表达式是什么

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更新时间 2022-12-27 13:53:36

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