在Java开发的世界里，有一个几乎所有程序员都深恶痛绝却又屡屡中招的“幽灵错误”——空指针异常（NullPointerException，简称NPE）。它像一颗隐藏在代码深处的定时炸弹，可能在你最不经意的时刻突然爆发：当你调用一个未初始化对象的方法时 ...

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 ...

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 ...

Complete your tour of JDK 5’s language features by exploring autoboxing and unboxing, the enhanced for loop, static imports, varargs, and covariant return types. This article wraps up my three-part ...