How does the mechanism of obtaining elements in a List interface work?

In Java, the List interface represents an ordered collection of elements, and retrieving elements is done through the get(int index) method. This method returns the element at the specified index.

Example:

List<String> list = new ArrayList<>();
list.add("First");
list.add("Second");

String element = list.get(1); // Returns "Second"

Working mechanism:

• In the ArrayList implementation, get simply returns the array element at the index, which operates in O(1).
• In the LinkedList implementation, the get method traverses the list from the beginning or end to the desired index, which takes O(n).

Thus, element retrieval depends on the specific List implementation.