1. add(elem) → add at end. 2. add(index, elem) → insert at position. 3. get(index) → access element. 4. set(index, elem) → replace element. 5. remove(index) → remove by position 6. remove(Object o) → remove by value. fruits.remove("Mango"); // removes "Mango" from the list 7. size() → number of elements. 8. isEmpty() → check if list is empty. 9. clear() → remove all elements. 10. contains(elem) → check if element exists. 11. indexOf(elem) → find first index of element.