View Compilation Error

0_0_29415323_15600\Main.java:1: 错误: 非法字符: '#'
#include <iostream>
^
0_0_29415323_15600\Main.java:1: 错误: 需要class, interface或enum
#include <iostream>
         ^
0_0_29415323_15600\Main.java:3: 错误: 非法字符: '#'
#include <cmath>
^
0_0_29415323_15600\Main.java:5: 错误: 非法字符: '#'
#include <iomanip>
^
0_0_29415323_15600\Main.java:9: 错误: 需要class, interface或enum
int main()
^
0_0_29415323_15600\Main.java:15: 错误: 需要class, interface或enum
while(cin >> a)
^
0_0_29415323_15600\Main.java:21: 错误: 需要class, interface或enum
}
^
0_0_29415323_15600\Main.java:25: 错误: 需要class, interface或enum
}
^
8 个错误