View Compilation Error

0_0_37986491_1642\Main.java:1: 错误: 非法字符: '#'
#include <iostream>
^
0_0_37986491_1642\Main.java:1: 错误: 需要class, interface或enum
#include <iostream>
         ^
0_0_37986491_1642\Main.java:2: 错误: 非法字符: '#'
#include  <string>
^
0_0_37986491_1642\Main.java:3: 错误: 非法字符: '#'
#include <algorithm>
^
0_0_37986491_1642\Main.java:5: 错误: 需要class, interface或enum
int main()
^
0_0_37986491_1642\Main.java:8: 错误: 需要class, interface或enum
   string s2="123";
   ^
0_0_37986491_1642\Main.java:9: 错误: 需要class, interface或enum
   a=s1;
   ^
0_0_37986491_1642\Main.java:10: 错误: 需要class, interface或enum
   cout<<a<<"\n";
   ^
0_0_37986491_1642\Main.java:11: 错误: 需要class, interface或enum
   cout<<a+s2<<"\n";
   ^
0_0_37986491_1642\Main.java:12: 错误: 需要class, interface或enum
   cout<<a<<"\n";
   ^
0_0_37986491_1642\Main.java:13: 错误: 需要class, interface或enum
   a=s1.substr(0,3);
   ^
0_0_37986491_1642\Main.java:14: 错误: 需要class, interface或enum
 cout<<a<<"\n";
 ^
12 个错误