使用java程序接收一个小于10的整数n,计算并输出阶乘.

import java.util.Scanner;
public class jiechen {
public static void main(String []args){
Scanner scanner=new Scanner(System.in);
System.out.println("请输入您要计算的数字");
int a=scanner.nextInt();
int jiecheng=1;
for (int i = 2; i