Exception- in thread “main” java.lang.ArrayIndexOutOfBoundsException

Question

public class Sum {

public static void main(String args[])
{
    int x,y,s; 
    x=Integer.parseInt(args[0]); 
    y=Integer.parseInt(args[1]);
    s=x+y;
   System.out.         


        

Answer 1

You need to pass the command-line arguments:

java Sum 0 1

---

It's also recommended to check length in this case:

int x,y,s;
if(args.length>=2){
  x=Integer.parseInt(args[0]);
  y=Integer.parseInt(args[1]);
  s=x+y;
  System.out.println("sum  "  +s);
}

---

And considering the intent of the program, you might want to loop the args[] array directly, and sum all numbers instead of just the first 2:

int total = 0;
for (int i = 0; i < args.length; i++) {
  total = total + Integer.parseInt(args[i]);
}
System.out.println("Total: " + total);

Command-line: java Sum 1 2 3 4 5 results in Total: 15