The method "get(i)" is used to retrieve an element at a specific index "i" from an ArrayList.
arrayList.set(i, element): A method that replaces the element at index "i" with another specified element in an ArrayList.
arrayList.contains(element): A method that checks if a specific element exists in an ArrayList.
arrayList.indexOf(element): A method that returns the index of the first occurrence of a specified element in an ArrayList.