View Compilation Error

0_0_32688357_708\Main.java:1: 错误: 需要class, interface或enum
public static void main(String[] args) {
              ^
0_0_32688357_708\Main.java:3: 错误: 需要class, interface或enum
		Scanner in=new Scanner(System.in);
		^
0_0_32688357_708\Main.java:4: 错误: 需要class, interface或enum
		a=in.nextInt();
		^
0_0_32688357_708\Main.java:5: 错误: 需要class, interface或enum
		while(in.hasNext()) {
		^
0_0_32688357_708\Main.java:7: 错误: 需要class, interface或enum
			for(int i=a;i<=n;++i){
			^
0_0_32688357_708\Main.java:7: 错误: 需要class, interface或enum
			for(int i=a;i<=n;++i){
			            ^
0_0_32688357_708\Main.java:7: 错误: 需要class, interface或enum
			for(int i=a;i<=n;++i){
			                 ^
0_0_32688357_708\Main.java:9: 错误: 需要class, interface或enum
			}
			^
0_0_32688357_708\Main.java:11: 错误: 需要class, interface或enum
			System.out.println(sum);
			^
0_0_32688357_708\Main.java:12: 错误: 需要class, interface或enum
		}
		^
0_0_32688357_708\Main.java:14: 错误: 需要class, interface或enum
	}
	^
11 个错误