What are the ways to create a two-dimensional array in Java?

There are several ways to create a 2D array in Java.

1. Initialize dynamically:

int[][] array = new int[3][4];

1. Use static initialization:

int[][] array = { {1, 2, 3}, {4, 5, 6}, {7, 8, 9} };

1. Step by step initialization:

int[][] array = new int[3][];
array[0] = new int[4];
array[1] = new int[4];
array[2] = new int[4];

1. Initialize using a loop.

int[][] array = new int[3][4];
for (int i = 0; i < array.length; i++) {
    for (int j = 0; j < array[i].length; j++) {
        array[i][j] = i * j;
    }
}