private static final long serialVersionUID=1L; //将所有的文本框组件都定为静态变量，目的是在其他类中可以自由调用 String sql="select ...

Each JVM thread (a path of execution) is associated with a stack that’s created when the thread is created. This data structure is divided into frames, which are data structures associated with method ...

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 ...

If you’ve ever wanted to understand how failure is represented in source code, you’ve come to the right place. In addition to an overview of Java exceptions, this article gets you started with Java’s ...