目录前言应用前言 System.exit(): System.exit(): System.exit() 方法是 Java 中用于退出程序的方法。它接受一个整数参数,通常被用来指示程序的退出状态。一般约定,如果程序正常退出,通常返回值为 0,而如果程序
I know about C++ pure virtual classes, but Java went one step further and created a first-class (no pun intended) concept for multiple-interface (not implementation) inheritance, 开发者_StackOverflowt