求大神看看，哪里出错了

Question

package day02; import java.util.Scanner; public class He { public static void main(String[] args) { double amount,price,money; Scanner sc=new Scanner(System.in); System.out.println("请输入商品单价： "); price=sc.nextDouble(); System.out.println("请输入购买数量： "); amount=sc.nextDouble(); System.out.println("请输入收款金额: "); money=sc.nextDouble(); System.out.println(price+','+amount+','+money); } }