用JAVA计算n的阶乘，n=10

pulic int jiecheng(int n){
if( n== 1 ){
return 1;
}else{
return n*jiecheng(n-1){
}

public static long multi(int n){
long result = 1L;
for(int i=1; i<=n; i++){
result = result * i;
}
return result;
}

public class Cal {
public Cal(){}
public Cal(int n){
int result = 1;
for(int i=n;i>=1;i--){
result = result*i;
}
System.out.println("阶乘的结果是："+ result);
}
public static void main(String[] args) {
int n = 10;
new Cal(n);
}
}

class jiecheng
{
public static void main(String[] args)
{

int sum=0;
for (int i=1;i<11;i++)
{
sum=sum+i;
}
System.out.print("10的结成为:"+sum);
}
}