View Compilation Error

0_0_27568764_9101\Main.java:2: 错误: 需要class, interface或enum
    public static void main(String[] args){
                  ^
0_0_27568764_9101\Main.java:4: 错误: 需要class, interface或enum
        int a = scanner.nextInt();
        ^
0_0_27568764_9101\Main.java:5: 错误: 需要class, interface或enum
        int b = scanner.nextInt();
        ^
0_0_27568764_9101\Main.java:6: 错误: 需要class, interface或enum
        System.out.println((a+b));
        ^
0_0_27568764_9101\Main.java:7: 错误: 需要class, interface或enum
    }
    ^
5 个错误