对于Java开发者来说，NullPointerException（空指针异常）就像一个挥之不去的噩梦。在编写代码时，逻辑或许清晰流畅，但一旦运行项目，这个异常就可能突然冒出来，打断整个流程。排查半天，才发现是某个字段没有进行判空处理。这种“空指针PTSD”让许多Java开发者苦不堪言。

While Java is one of the most in-demand and widely used programming languages in the world, it is not without its detractors. Java is not a particularly beginner-friendly language and it is rife with ...