how to loop through a 2d array code example

Example 1: reading a 2d array with for each loop

for (int[] u: uu) {
    for (int elem: u) {
        // Your individual element
    }
}

Example 2: how to use loop in 2d array

for (int row = 0; row < board.length; row++) { 
	for (int col = 0; col < board[row].length; col++) { 
    	board[row][col] = row * col; 
        } 
    }