View Compilation Error

0_0_13463384_26528\Main.java:1: 错误: 需要class, interface或enum
 public static void main(String args[])
               ^
0_0_13463384_26528\Main.java:4: 错误: 需要class, interface或enum
	  while (in.hasNextInt()) {
	  ^
0_0_13463384_26528\Main.java:6: 错误: 需要class, interface或enum
	   int b = in.nextInt();
	   ^
0_0_13463384_26528\Main.java:7: 错误: 需要class, interface或enum
	   System.out.println(a + b);
	   ^
0_0_13463384_26528\Main.java:8: 错误: 需要class, interface或enum
	  }
	  ^
5 个错误