public class SumArray
{
    public static void main(String[] args)
    {
        int[][] myGrid = { {1,2,3},
                           {4,5},
                           {6,7,8,9} };
        int s;
       
        s = sum(myGrid);
        System.out.println( s );
    }

    public static int sum(int[][] m) 
    {
        int total = 0;

        for (int i = 0; i < m.length; i++) 
            for (int j = 0; j < m[i].length; j++)
                total = total + m[i][j];

        return total;
    }  
}