How to loop around a cell in a 2D array?

Question

Java

Actually, subject. I need to change the values ​​in a char[][] array around a cell. Is it possible to do so? It is desirable with check on an output from an array.

Answer 1

Nested loop on both coordinates from -1 to +1 from the current coordinate, why not?

Answer 2

The question is, are cycles really necessary?
You can also calculate the coordinates of each cell and check for them whether they are within the boundaries of the array. 8 cells is not that much.