View Compilation Error

0_0_24377811_22196\Main.java:1: 错误: 需要class, interface或enum
public static void main(String[] args)
              ^
0_0_24377811_22196\Main.java:4: 错误: 需要class, interface或enum
        Scanner cin = new Scanner(System.in);
        ^
0_0_24377811_22196\Main.java:5: 错误: 需要class, interface或enum
        while (cin.hasNext()) {
        ^
0_0_24377811_22196\Main.java:7: 错误: 需要class, interface或enum
            b = cin.nextInt();
            ^
0_0_24377811_22196\Main.java:8: 错误: 需要class, interface或enum
            System.out.println(a + b);
            ^
0_0_24377811_22196\Main.java:9: 错误: 需要class, interface或enum
        }
        ^
6 个错误