一个平平无奇的ctfer

/*  index.html  */
public interface Welcome {
    void welcome();
}
public class MyWelcome implements Welcome {
    @Override
    public void welcome() {
        System.out.println("Welcome!这是首页！");   
    }
}
class MySite {
    public static void main(String[] args) {
        MyWelcome mywObject = new MyWelcome();
        mywObject.welcome();
    }
}