View Compilation Error

0_0_39255902_2141\Main.java:1: 错误: 需要class, interface或enum
public static void main(String[] args) {
              ^
0_0_39255902_2141\Main.java:3: 错误: 需要class, interface或enum
        while(in.hasNext()) {
        ^
0_0_39255902_2141\Main.java:5: 错误: 需要class, interface或enum
            int jg=0;
            ^
0_0_39255902_2141\Main.java:6: 错误: 需要class, interface或enum
            for (int i = 1; i <= n; i++) {
            ^
0_0_39255902_2141\Main.java:6: 错误: 需要class, interface或enum
            for (int i = 1; i <= n; i++) {
                            ^
0_0_39255902_2141\Main.java:6: 错误: 需要class, interface或enum
            for (int i = 1; i <= n; i++) {
                                    ^
0_0_39255902_2141\Main.java:9: 错误: 需要class, interface或enum
                    else  jg=0;
                    ^
0_0_39255902_2141\Main.java:10: 错误: 需要class, interface或enum
                }
                ^
0_0_39255902_2141\Main.java:13: 错误: 需要class, interface或enum
        }
        ^
9 个错误