command-line-arguments-integer

class Cargint
{
    public static void main(String[] args) 
    {
        int sum=0;
        
        for(String s:args)
        {
        int i=Integer.parseInt(s);
        
        sum=sum+i;
        
        }
        System.out.println(sum);

    }
}


run: java Cargint  10 20 30

output:
60