对于Java开发者而言，NullPointerException（空指针异常）堪称挥之不去的“梦魇”。编码时逻辑顺畅无虞，但项目一经运行，这一异常便可能突然现身，彻底中断业务流程。耗费大量时间排查后才发现，竟是某个字段遗漏了判空处理。这种被空指针支配的“PTSD”，让无数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 ...

It doesn’t take much Java development experience to learn firsthand what the NullPointerException is about. In fact, one person has highlighted dealing with this as the number one mistake Java ...