Find the sum of all the elements in DDA

Write a program to input and store integer elements in a double dimensional array of size  3 x 4  and find the sum of all the elements.

import java.util.*;

class DDA

{

    public static void main(String arg[])

    {

        int[][] num = new int[3][4];

       

        int x = 0 ;

       

        Scanner sk = new Scanner(System.in);

   

        System.out.println("Enter all the values ");

       

        for(int i=0 ; i<3 ; i++)

        {

            for(int j=0 ; j<4 ; j++)

            {

                num[i][j] = sk.nextInt();

            }

        }

       

        for(int i=0 ; i<3 ; i++)

        {

            for(int j=0 ; j<4 ; j++)

            {

                x = x + num[i][j] ;

            }

        }   

       

        System.out.println("The sum of all the elements is : " +x) ;

   

    }

}