View Compilation Error

0_0_38427490_11324\Main.java:1: 错误: 需要class, interface或enum
Scanner in = new Scanner(System.in);
^
0_0_38427490_11324\Main.java:3: 错误: 需要class, interface或enum
        while(in.hasNextLine()){
        ^
0_0_38427490_11324\Main.java:5: 错误: 需要class, interface或enum
            int sum = 0;
            ^
0_0_38427490_11324\Main.java:6: 错误: 需要class, interface或enum
            for(int i = 1; i <= n; i++){
            ^
0_0_38427490_11324\Main.java:6: 错误: 需要class, interface或enum
            for(int i = 1; i <= n; i++){
                           ^
0_0_38427490_11324\Main.java:6: 错误: 需要class, interface或enum
            for(int i = 1; i <= n; i++){
                                   ^
0_0_38427490_11324\Main.java:8: 错误: 需要class, interface或enum
            }
            ^
0_0_38427490_11324\Main.java:10: 错误: 需要class, interface或enum
        }
        ^
8 个错误