View Compilation Error

0_0_39323773_13123\Main.java:1: 错误: 需要class, interface或enum
 public static void main(String[] args) {
               ^
0_0_39323773_13123\Main.java:3: 错误: 需要class, interface或enum
        while (true){
        ^
0_0_39323773_13123\Main.java:5: 错误: 需要class, interface或enum
            int b= scanner.nextInt();
            ^
0_0_39323773_13123\Main.java:6: 错误: 需要class, interface或enum
            int c=a+b;
            ^
0_0_39323773_13123\Main.java:7: 错误: 需要class, interface或enum
            System.out.println(c);
            ^
0_0_39323773_13123\Main.java:8: 错误: 需要class, interface或enum
        }
        ^
6 个错误