View Compilation Error

0_0_21796908_18371\Main.java:1: 错误: 需要class, interface或enum
public static void main(String[] args) {
              ^
0_0_21796908_18371\Main.java:3: 错误: 需要class, interface或enum
			int sum = 0;
			^
0_0_21796908_18371\Main.java:4: 错误: 需要class, interface或enum
			while (in.hasNext()) {
			^
0_0_21796908_18371\Main.java:6: 错误: 需要class, interface或enum
				for (int i = 1; i <= n; i++) {
				^
0_0_21796908_18371\Main.java:6: 错误: 需要class, interface或enum
				for (int i = 1; i <= n; i++) {
				                ^
0_0_21796908_18371\Main.java:6: 错误: 需要class, interface或enum
				for (int i = 1; i <= n; i++) {
				                        ^
0_0_21796908_18371\Main.java:8: 错误: 需要class, interface或enum
				}
				^
0_0_21796908_18371\Main.java:11: 错误: 需要class, interface或enum
				System.out.println();
				^
0_0_21796908_18371\Main.java:12: 错误: 需要class, interface或enum
			}
			^
9 个错误