I have to read data from csv file and perform math operation (sum, avg, min, max) of each row data (rows can be infinite and columns can be infinite)

Question

import java.util.Scanner; public class csv_demo { // private static final Exception ArrayIndexOutOfBoundsException = null;

public static void main(String[] args) throws ArrayIndexOutOfBoundsException, FileNotFoundException
    {
        //Get scanner instance
      Scanner scanner = new Scanner(new File("C:/Users/Glocation/Desktop/abc.csv"));
        //Set the delimiter used in file
        scanner.useDelimiter(",");

        int sum = 0, avg =0,max = 0,min = 0,a=0,b=0;

        System.out.println("N1|N2|Sum|Avg|Max|Min");

     try
     {
       while(scanner.hasNext())
       {    
           String line=scanner.nextLine();
           String[] arr=line.split(",");

           for(int k=0;k<arr.length-1;k++)
           {
               a=Integer.parseInt(arr[k]);
               b=Integer.parseInt(arr[k+1]);

               sum = a+b;

                avg= a+b/2;
                if(a>b) 
                {
                    max=a;
                    min=b;
                }
                else
                {
                    max=b;
                    min=a;
                }
                System.out.println(a+"  |"+b+"  |"+sum+"  |"+avg+"  |"+max+"  |"+min);
           }
            }
     }catch (Exception e)
     {    }
    }
 }

I am getting error in the line of converting string array to get value in variable "a". My CSV file is 1 2 3 4 6 7 9 2 5 7 5 6 8