View Compilation Error

0_0_25295885_17334\Main.java:4: 错误: 需要class, interface或enum
	public static void main(String[] args)
	              ^
0_0_25295885_17334\Main.java:7: 错误: 需要class, interface或enum
  int a;
  ^
0_0_25295885_17334\Main.java:8: 错误: 需要class, interface或enum
  int sum;
  ^
0_0_25295885_17334\Main.java:9: 错误: 需要class, interface或enum
  while(sc.hasNext())
  ^
0_0_25295885_17334\Main.java:11: 错误: 需要class, interface或enum
	  a = sc.nextInt();
	  ^
0_0_25295885_17334\Main.java:12: 错误: 需要class, interface或enum
	  for(int i=1; i<=a; i++)
	  ^
0_0_25295885_17334\Main.java:12: 错误: 需要class, interface或enum
	  for(int i=1; i<=a; i++)
	               ^
0_0_25295885_17334\Main.java:12: 错误: 需要class, interface或enum
	  for(int i=1; i<=a; i++)
	                     ^
0_0_25295885_17334\Main.java:15: 错误: 需要class, interface或enum
	  }
	  ^
0_0_25295885_17334\Main.java:17: 错误: 需要class, interface或enum
  }
  ^
10 个错误