View Compilation Error

0_0_38890750_29598\Main.java:1: 错误: 需要class, interface或enum
 public static void main(String[] args) {
               ^
0_0_38890750_29598\Main.java:3: 错误: 需要class, interface或enum
 while(scanner.hasNext()){
 ^
0_0_38890750_29598\Main.java:5: 错误: 需要class, interface或enum
continue;
^
0_0_38890750_29598\Main.java:6: 错误: 需要class, interface或enum
}
^
0_0_38890750_29598\Main.java:9: 错误: 需要class, interface或enum
            int b = scanner.nextInt();
            ^
0_0_38890750_29598\Main.java:10: 错误: 需要class, interface或enum
            int ans = a + b;
            ^
0_0_38890750_29598\Main.java:11: 错误: 需要class, interface或enum
            System.out.println(ans);
            ^
0_0_38890750_29598\Main.java:12: 错误: 需要class, interface或enum
        }
        ^
8 个错误