2-D matrix in java

/*program for two dimensional matrix */

package array;
import java.util.Scanner;
class ArrayClass3
{
    public static void main(String[] args)
    {
       Scanner s=new Scanner(System.in);
       int[][]ar=new int[2][2];
       int i,j;
       System.out.println("Enter elements of the array :");
       for(i=0;i<2;i++)
       {
           for(j=0;j<2;j++)
           {
               ar[i][j]=s.nextInt();
           }
       }
       System.out.println("Two dimension matrix are are : ");
       for(i=0;i<2;i++)
       {
           for(j=0;j<2;j++)
           {
               System.out.print(ar[i][j]+" ");
           }
           System.out.println();
       }
    }
}

output