arrays and their OutOfBounds

Question

Simple arrays are pretty handy, arent they? The only thing that bothers me that they are rigid in their size.
Knowing that, I turn to lists. Their functionality in some instatnces is dissapointing for me. What I am supposed to do if I want to create a 2d or 3d array but it must be stretchy? Help please with some ideas.
I just want those simple arrays but they must stretch. How'd i do that?

Answer 1

To add to the size of an array you would need to create a new array with one more size, then do a deep copy of the array. May want to just create a partially filled array instead. ArrayLists work too.

You could also use a Linked List.

Answer 2

ArrayLists are probably your best bet in Java. Same as arrays, just resizable (to my knowledge). Otherwise, you can try LinkedLists. Best of luck#

Answer 3

@Serena
Once I convert a 2d or 3d array to a list, I cannot convert the list back to a 2d or 3d array. Otherwise seems like a fine idea.
@Keto
Same here

Answer 4

@Serena
Oh, that's the lack of experience. I have never seen multidimensional lists so I thought all lists have one dimension only. Something must be added to tutorial materials.
Thanks for help ;)