从命令行接收多个数字并求和输出

import java.util.Scanner;
public class NumSum {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int i,sum=0,t;
        
        Scanner s=new Scanner(System.in);
         int length=args.length;//取数组长度
        System.out.println("please input some strings");
       int num[] = new int[length];
        for(i=0;i<length;i++)
        {
            String str;
            str=args[i];
            t=Integer.parseInt(str);//将string转化为int
            num[i]=t;
        }
        for(i=0;i<length;i++)
        {
            sum=sum+num[i];        
        }
        System.out.println("The sum of number is "+sum);
    }

}