Question

About sums up the number using command line arguments.
For example

    java  sum  "1 2 3"    <--"1 2 3" will be args[0]
    the sum is 6

How can i calculate it?
I want the code of this program.
Thank
This code only can calculate when i input
java sum 1 2 3
but i want input
java sum “1 2 3”

public class sum {
public static void main( String args[] ) {
int num=0;
for(int i=0; i<args.length; i++){
   num+= Integer.parseInt(args[i]);
}

  System.out.println("The sum is " + num);
   }
}

Answer 1

• First create a counter, initialise at zero.
• Split the “1 2 3” string on spaces, using args[0].split(" "); and assign it to a new array.
• Loop through all the elements of the new array.
• Parse every element to an integer using Integer.parseInt(String);
• Add the parsed value to the counter.
• Print the result.