Code for Jagged Array

using System;
namespace Console_JaggedArray
{
    class JaggedArray
    {
        public void JA()
        {
            //Declaring the jagged array to accept the input from user
            int i;
            string[][] jag = new string[3][];

            //To enter 1st set of column by user
            Console.Write("Enter the 1st set of columns :");
            int s = int.Parse(Console.ReadLine());
            jag[0] = new string[s];
            for (i = 0; i < s; i++)
            {
                jag[0][i] = Console.ReadLine();
            }
            Console.WriteLine("\n");

            //To enter 2nd set of column by user
            Console.Write("Enter the 2nd set of columns :");
            int s1 = int.Parse(Console.ReadLine());
            jag[1] = new string[s1];
            for (i = 0; i < s1; i++)
            {
                jag[1][i] = Console.ReadLine();
            }
            Console.WriteLine("\n");

            //To enter 3rd set of column by user
            Console.Write("Enter the 3rd set of columns :");
            int s2 = int.Parse(Console.ReadLine());
            jag[2] = new string[s2];
            for (i = 0; i < s2; i++)
            {
                jag[2][i] = Console.ReadLine();
            }
            Console.WriteLine("\n");

            //For print all columns
            Console.WriteLine("\n Print all the Columns :");
            Console.WriteLine("1st column");
            for (i = 0; i < s; i++)
            {
                Console.WriteLine(jag[0][i]);
            }
            Console.WriteLine("\n");

            Console.WriteLine("2nd column");
            for (i = 0; i < s1; i++)
            {
                Console.WriteLine(jag[1][i]);
            }
            Console.WriteLine("\n");

            Console.WriteLine("3rd column");
            for (i = 0; i < s2; i++)
            {
                Console.WriteLine(jag[2][i]);
            }
            Console.WriteLine("\n");

        }
        static void Main(string[] args)
        {
            JaggedArray j = new JaggedArray();
            j.JA();
            Console.ReadKey();
        }
    }
}