我把 Null 引用称为自己的十亿美元错误。它的发明是在 1965 年，那时我用一个面向对象语言（ALGOL W）设计了第一个全面的引用类型系统。我的目的是确保所有引用的使用都是绝对安全的，编译器会自动进行检查。但是我未能抵御住诱惑，加入了 Null 引用，仅仅是 ...

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 ...

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Holly Cummins discusses why "nothing is new ...

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 ...

I have a bit of Java code where I need to check if an object is null. If the object is null, set a flag in a boolean primitive for use later, and if not, do something to the object. Is it faster for ...

The new Spring Framework uses JSpecify for null safety. It also introduces API versioning and offers a new retry concept for resilience. VMWare Tenzu has released Spring Framework 7. The open-source ...