View Compilation Error

0_0_18970296_5419\Main.java:1: 错误: 需要class, interface或enum
public static void main(String[] args)throws Exception {
              ^
0_0_18970296_5419\Main.java:3: 错误: 需要class, interface或enum
    GregorianCalendar date=new GregorianCalendar();
    ^
0_0_18970296_5419\Main.java:4: 错误: 需要class, interface或enum
    Scanner cin=new Scanner(System.in);
    ^
0_0_18970296_5419\Main.java:5: 错误: 需要class, interface或enum
     while(cin.hasNext()) {
     ^
0_0_18970296_5419\Main.java:8: 错误: 需要class, interface或enum
        date.setTime(df.parse(tmp));
        ^
0_0_18970296_5419\Main.java:9: 错误: 需要class, interface或enum
        System.out.println(date.get(date.DAY_OF_YEAR));
        ^
0_0_18970296_5419\Main.java:10: 错误: 需要class, interface或enum
     }
     ^
7 个错误