好像真的是啊   真是高手啊   虽然你说的那些 我现在没怎么懂   我仔细看看  一定要搞会

/*

 * 求1!+2!+3!+...n!的和

 */
public class TDemo01 {
    public static void main(String args[]) {
        int n = 9, m = 1, sum = 1;
        for (int i = 2; i <= n; i++) {
            m *= i;
            sum += m;
        }
        System.out.println("1!+2!+3!+...+9!=" + sum);
    }
}
一个for()循环就可以了  

class cal
{
    int m = 1;
    public int f()
    {
        int m = 1,sum = 0;
        
        for(int i = 1; i < 7; i++)
        {
            m = 1;
            for(int j = 1; j <= i; j++)
            {
                m = m * j;
            }
            sum = sum + m;
        }
        return sum;
    }
}

public class tanhe
{
    public static void main(String[] args)
    {
        int m;
        cal aa = new cal();
        System.out.printf("1！+ 2！+ 3！+...+6! = %d", aa.f());
    }
}
//873