View Compilation Error

0_0_30380440_19385\Main.java:1: 错误: 需要class, interface或enum
public static void main(String[] args) {
              ^
0_0_30380440_19385\Main.java:3: 错误: 需要class, interface或enum
        int a = cin.nextInt();
        ^
0_0_30380440_19385\Main.java:4: 错误: 需要class, interface或enum
        int b = cin.nextInt();
        ^
0_0_30380440_19385\Main.java:5: 错误: 需要class, interface或enum
        while (sc.hasNext()) {
        ^
0_0_30380440_19385\Main.java:9: 错误: 需要class, interface或enum
        }
        ^
5 个错误