ArrayList:

• Dynamic array implementation
• Fast random access O(1)
• Slow insertion/deletion in middle O(n)
• Better for frequent access operations
  LinkedList:
• Doubly-linked list implementation
• Slow random access O(n)
• Fast insertion/deletion O(1)
• Better for frequent modification operations

List<String> arrayList = new ArrayList<>();
List<String> linkedList = new LinkedList<>();
// ArrayList better for
String element = arrayList.get(100); // O(1)
// LinkedList better for
linkedList.add(0, "first"); // O(1)
linkedList.remove(0);       // O(1)