View Compilation Error

0_0_39251579_28384\Main.java:1: 错误: 需要class, interface或enum
    public static void main(String[] args) {
                  ^
0_0_39251579_28384\Main.java:3: 错误: 需要class, interface或enum
        while (in.hasNext()){
        ^
0_0_39251579_28384\Main.java:5: 错误: 需要class, interface或enum
        int amount=1;
        ^
0_0_39251579_28384\Main.java:6: 错误: 需要class, interface或enum
        while(m!=0){
        ^
0_0_39251579_28384\Main.java:8: 错误: 需要class, interface或enum
            m--;
            ^
0_0_39251579_28384\Main.java:9: 错误: 需要class, interface或enum
        }
        ^
0_0_39251579_28384\Main.java:11: 错误: 需要class, interface或enum
        }
        ^
7 个错误