Program that adds up the individual elements of 2 D Array

/*  Program that adds up the individual elements of 2 D Array*/
   
class TwoDArray1
{
    public static void main(String args[ ])
    {
         int i , j , sum ;
         int elements[ ][ ] = { {0,2,4,6,8,10,12},
                    {14,16,18,20,22,24,26},
                    {28,30,32,34,36,38,40} } ;
              for ( i = 0,sum = 0 ; i < 3 ; i++)
          {
                 for (j=0 ; j<7 ; j++)
                       sum = sum + elements[i][j] ;
          }
          System.out.println("The result of addition = "+ sum) ;     
    }
}