View Compilation Error

0_0_36329688_7210\Main.java:1: 错误: 需要class, interface或enum
public static void main(String[] args) {
              ^
0_0_36329688_7210\Main.java:3: 错误: 需要class, interface或enum
        while (sc.hasNext()) {
        ^
0_0_36329688_7210\Main.java:5: 错误: 需要class, interface或enum
            int sum = 0;
            ^
0_0_36329688_7210\Main.java:6: 错误: 需要class, interface或enum
            while (n-- > 0) {
            ^
0_0_36329688_7210\Main.java:8: 错误: 需要class, interface或enum
                sum += b;
                ^
0_0_36329688_7210\Main.java:9: 错误: 需要class, interface或enum
            }
            ^
0_0_36329688_7210\Main.java:11: 错误: 需要class, interface或enum
        }
        ^
7 个错误