编写Java应用程序，使用递归调用求1！+2！+3！+......+22!；的和

public class FactorialSum {
public static void main(String[] args) {
int sum = 0;
for(int i = 1; i <= 22; i++) {
sum += factorial(i);
}
System.out.println("1! + 2! + 3! + ... + 22! = " + sum);
}

public static int factorial(int n) {
if(n == 1) {
return 1;
}
return n * factorial(n-1);
}
}