View Compilation Error

0_0_21308528_2546\Main.java:1: 错误: 非法字符: '#'
#include <iostream>
^
0_0_21308528_2546\Main.java:1: 错误: 需要class, interface或enum
#include <iostream>
         ^
0_0_21308528_2546\Main.java:4: 错误: 需要class, interface或enum
int main(){
^
0_0_21308528_2546\Main.java:6: 错误: 需要class, interface或enum
    while(cin>>a>>b){
    ^
0_0_21308528_2546\Main.java:8: 错误: 需要class, interface或enum
    }
    ^
5 个错误