View Compilation Error

0_0_34046251_24272\Main.java:1: 错误: 需要class, interface或enum
    public static void main(String[] args) throws Exception{
                  ^
0_0_34046251_24272\Main.java:6: 错误: 需要class, interface或enum
        Integer A = scan.nextInt();
        ^
0_0_34046251_24272\Main.java:7: 错误: 需要class, interface或enum
        Integer B = scan.nextInt();
        ^
0_0_34046251_24272\Main.java:8: 错误: 需要class, interface或enum
        System.out.println(A+B);
        ^
0_0_34046251_24272\Main.java:9: 错误: 需要class, interface或enum
    }
    ^
5 个错误