CMD could not print class file

Question

Look at the CMD picture, it was fine after compiled, but why did it not  print the code what I programmed in java file?  Does it has some problem in my environment variables?  Who can help me? Thank you.

Answer 1

这是一个例子，你可以把它放到java文件中，我估计是你的main方法有问题，没有源码只能猜测public class FirstJavaCode{    public static void main(String[] args){        System.out.println("abc");    }}