Java ACM JTF 包

Question

我对下面的代码有疑问。我想知道为什么即使 main 方法不存在，代码也能正确编译和运行？

import acm.program.*;  

public class HelloConsole extends ConsoleProgram {  

   public void run() {  
      println("hello, world");  
   }    
}

谢谢。

Answer 1

这是 ACM 程序类的设计。请参阅javadocs :

The conventional pattern of use associated with the acm.program package moves students away from the imperative style of public static void maininto a more pedagogically defensible framework in which students are always working in the context of an object.

在这种情况下，您将重写 init/run 方法，而不是编写 main 方法。