Whats the different between arraylist and linkedlist in java

Question

Differents of arraylist and linkedlist

Answer 1

As I found it's about performance.

If you use method get(int index) in ArrayList it gives you performance of O(1) while linkedlist performance is O(n).

More here:
https://beginnersbook.com/2013/12/difference-between-arraylist-and-linkedlist-in-java/