How can I access the previous/next element in an ArrayList?

Question

I iterate through an ArrayList this way:

for (T t : list){
  ...
}

When I did this, I never thought I had to access the previous and next eleme

Answer 1

I found a solution too. It was next.

For next: letters.get(letters.indexOf(')')+1)

For previous: letters.get(letters.indexOf(')')-1)