java 求阶乘

package com.minrisoft;
import java.util.Scanner;
public class Test {
public static void main(String[] args){
Scanner yuan=new Scanner(System.in);
    System.out.println("请输入求几以内的阶乘（包含）： ");
    int n=yuan.nextInt();
int jie=1;
int sum=0;
for(int i=1;i<=n;i++){
jie=1;
for(int j=1;j<=i;j++){
jie = jie*j;
}
sum+=jie;
}
System.out.println(sum);
}
}