two dimensional array in java example program

1int[][] multiples = new int[4][2];     // 2D integer array with 4 rows 
2                                          and 2 columns
3String[][] cities = new String[3][3];  // 2D String array with 3 rows 
4                                          and 3 columns

1class MultidimensionalArray {
2    public static void main(String[] args) {
3
4        int[][] a = {
5            {1, -2, 3}, 
6            {-4, -5, 6, 9}, 
7            {7}, 
8        };
9      
10        for (int i = 0; i < a.length; ++i) {
11            for(int j = 0; j < a[i].length; ++j) {
12                System.out.println(a[i][j]);
13            }
14        }
15    }
16}

1String[][][] data = new String[3][4][2];

1class MultidimensionalArray {
2    public static void main(String[] args) {
3
4        // create a 2d array
5        int[][] a = {
6            {1, -2, 3}, 
7            {-4, -5, 6, 9}, 
8            {7}, 
9        };
10      
11        // first for...each loop access the individual array
12        // inside the 2d array
13        for (int[] innerArray: a) {
14            // second for...each loop access each element inside the row
15            for(int data: innerArray) {
16                System.out.println(data);
17            }
18        }
19    }
20}

1int[][] a = new int[3][4];