Add the individual columns and rows in a 2D Array and display in a 1D Array table?

I'm a beginner in Java programming. I have created the 2D array that generates random numbers to fill the array.

But now I need to calculate the sum of the rows and columns individually and store the values in a separate table formatted in a 1D array using a method...

This is what I have so far:

import java.util.*;
import java.math.*;

    public class Q42 {

        public static void main(String[] args) {

                //create the grid
                final int rowWidth = 4;
                final int colHeight = 5;

                Random rand = new Random();

                int [][] board = new int [rowWidth][colHeight];

                //fill the grid
                for (int row = 0; row < board.length; row++) {
                        for (int col = 0; col < board[row].length; col++) {
                                board[row][col] = rand.nextInt(10);
                        }
                }

                //display output
                for(int i = 0; i < board.length; i++) {
                        for(int j = 0; j < board[i].length; j++) {
                                System.out.print(board[i][j] + " ");
                                //System.out.println();
                        }
                        System.out.println();
                
} //end of main

        public static int[] sumTableRows(int[][] table)
        {
            int rows = table.length;
            int cols = table[0].length;

            int[] sum = new int[rows];
            for(int x=0; x<rows; x++)
                for(int y=0; y<cols; y++)
                    sum[x] += table[x][y];
            return sum;     
        }

    } //end of class Main