View Compilation Error

0_0_22309816_10841\Main.java:3: 错误: 需要class, interface或enum
public Main {
       ^
0_0_22309816_10841\Main.java:4: 错误: 需要class, interface或enum
	public static void main(String[] args) {
	              ^
0_0_22309816_10841\Main.java:6: 错误: 需要class, interface或enum
		int n = in.nextInt();
		^
0_0_22309816_10841\Main.java:7: 错误: 需要class, interface或enum
		in.nextLine();
		^
0_0_22309816_10841\Main.java:8: 错误: 需要class, interface或enum
		while(n-- > 0) {
		^
0_0_22309816_10841\Main.java:10: 错误: 需要class, interface或enum
			int len = a.length(),ans = 0;
			^
0_0_22309816_10841\Main.java:11: 错误: 需要class, interface或enum
			for(int i = 0;i < len; ++i) {
			^
0_0_22309816_10841\Main.java:11: 错误: 需要class, interface或enum
			for(int i = 0;i < len; ++i) {
			              ^
0_0_22309816_10841\Main.java:11: 错误: 需要class, interface或enum
			for(int i = 0;i < len; ++i) {
			                       ^
0_0_22309816_10841\Main.java:13: 错误: 需要class, interface或enum
			}
			^
0_0_22309816_10841\Main.java:15: 错误: 需要class, interface或enum
		}		
		^
11 个错误