View Compilation Error

0_0_37232868_1891\Main.java:1: 错误: 需要class, interface或enum
Scanner sc=new Scanner(System.in);
^
0_0_37232868_1891\Main.java:3: 错误: 需要class, interface或enum
        int n=sc.nextInt();
        ^
0_0_37232868_1891\Main.java:4: 错误: 需要class, interface或enum
        int sum=0;
        ^
0_0_37232868_1891\Main.java:5: 错误: 需要class, interface或enum
        for (int i=1;i<=n;i++){
        ^
0_0_37232868_1891\Main.java:5: 错误: 需要class, interface或enum
        for (int i=1;i<=n;i++){
                     ^
0_0_37232868_1891\Main.java:5: 错误: 需要class, interface或enum
        for (int i=1;i<=n;i++){
                          ^
0_0_37232868_1891\Main.java:7: 错误: 需要class, interface或enum
        }
        ^
7 个错误