Rule content

返回类型为基本数据类型【long】，return包装数据类型的对象【Long】时，自动拆箱有可能产生NPE

Problem description

IntelliJ IDEA 2020.2.1 (Ultimate Edition) Build #IU-202.6948.69, built on August 25, 2020
Alibaba Java Coding Guidelines Plugin Version: 2.1.0

return 之前已经做了非空校验，为何还会提示 NPE 警告？

Advice