import java.awt.Font;
import java.util.Arrays;
import java.util.Random;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;


/**
 *
 * @author Bill Kraynek
 */
public class RecursiveGridSum {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        String out = "";
        int[][] solution = new int[5][7];
        Random random = new Random();        
        for( int i = 0; i < solution.length; i++) {
            for( int j = 0; j < solution[0].length; j++) {
                solution[i][j] = random.nextInt(10);
            }// en for
        }// end for
        out += "Number of columns is " + solution[0].length + "\n\n";
        out += "Number of rows is " + solution.length + "\n\n";
        out += "2 D array is\n";
        for( int i = 0; i < solution.length; i++) out += Arrays.toString(solution[i]) + "\n";
        out += "\nSum is " + sum(solution);
        JTextArea area = new JTextArea(out,20,30);
        area.setFont(new Font(Font.MONOSPACED,Font.BOLD,20));
        JOptionPane.showMessageDialog(null, new JScrollPane(area));
    }
    static int sum(int[][] grid) {
        return sum(grid,0,0);
    }// end sum
    
    static int sum(int[][] grid, int row, int col){
        if( row >= grid.length ) return 0;
        if( col >= grid[0].length ) return sum(grid,row+1,0);
        return grid[row][col] + sum(grid,row,col+1);
        
    }// end sum
}