View Compilation Error

0_0_22136407_23327\Main.java:1: 错误: 非法字符: '#'
#include<cstdio>
^
0_0_22136407_23327\Main.java:1: 错误: 需要class, interface或enum
#include<cstdio>
        ^
0_0_22136407_23327\Main.java:2: 错误: 非法字符: '#'
#include<iostream>
^
0_0_22136407_23327\Main.java:6: 错误: 需要class, interface或enum
int a, b;
^
0_0_22136407_23327\Main.java:7: 错误: 需要class, interface或enum
int n;
^
0_0_22136407_23327\Main.java:9: 错误: 需要class, interface或enum
int main(){
^
0_0_22136407_23327\Main.java:11: 错误: 需要class, interface或enum
	while(n--){
	^
0_0_22136407_23327\Main.java:13: 错误: 需要class, interface或enum
		if(a < b) swap(a, b);
		^
0_0_22136407_23327\Main.java:14: 错误: 需要class, interface或enum
		printf("%d\n", a * 2 + b);
		^
0_0_22136407_23327\Main.java:15: 错误: 需要class, interface或enum
	}
	^
0_0_22136407_23327\Main.java:17: 错误: 需要class, interface或enum
}
^
11 个错误