View Compilation Error

0_0_33260969_26849\Main.java:1: 错误: 需要class, interface或enum
public static void main(String [] args){
              ^
0_0_33260969_26849\Main.java:3: 错误: 需要class, interface或enum
		java.util.Scanner  s =new java.util.Scanner(System.in);
		^
0_0_33260969_26849\Main.java:5: 错误: 需要class, interface或enum
		while(s.hasNextInt()){
		^
0_0_33260969_26849\Main.java:7: 错误: 需要class, interface或enum
			int res =0,shu =0;
			^
0_0_33260969_26849\Main.java:8: 错误: 需要class, interface或enum
			if(num==0)
			^
0_0_33260969_26849\Main.java:10: 错误: 需要class, interface或enum
			while(num--!=0){
			^
0_0_33260969_26849\Main.java:12: 错误: 需要class, interface或enum
				res+=shu;
				^
0_0_33260969_26849\Main.java:13: 错误: 需要class, interface或enum
			}
			^
0_0_33260969_26849\Main.java:15: 错误: 需要class, interface或enum
		}
		^
9 个错误