编辑代码

public class Factorial{
    public static void main(String[] args) {
        long sum=0,fact;
	    for(int n=1;n<=7;n++){
			fact=1;
			for(int m=1;m<=n;m++)
				fact*=m;
			sum+=fact;
		}
        System.out.println (" sum = "+sum);
        System.out.println (" dsj01 djx45");
   }
}