//this way u can fill your array row by row
Scanner input = new Scanner(System.in);
for (int i = 0; i < row; i++){	for (int j = 0; j < column; j++){ array[i][j] = input.nextInt();	}
}
//this way u can fill your array column by column
//Scanner input = new Scanner(System.in);
for (int i = 0; i < column; i++){	for (int j = 0; j < row; j++){ array[i][j] = input.nextInt();	}
}

IntStream.range(0, array.length).forEach(x -> Arrays.setAll( array[x], y -> String.format("%c%c", letter(x), letter(y))));

static String[][] testArraySetAll() { String[][] array = new String[3][3]; Arrays.setAll(array, x -> { Arrays.setAll(array[x], y -> String.format("%c%c", letter(x), letter(y))); return array[x]; }); return array;
}