| Methods | Description|

| :---------| :----------|

| `add(int index, Object element)` | This method is used to insert a specific element at a specific position index in a list. |

| `add(Object o)` | This method is used to append a specific element to the end of a list. |

| `addAll(Collection C)` | This method is used to append all the elements from a specific collection to the end of the mentioned list, in such an order that the values are returned by the specified collection’s iterator. |

| `addAll(int index, Collection C)` | Used to insert all of the elements starting at the specified position from a specific collection into the mentioned list. |

| `clear()` | This method is used to remove all the elements from any list. |

| `clone()` | This method is used to return a shallow copy of an ArrayList. |

| `contains?(Object o)` | Returns true if this list contains the specified element. |

| `ensureCapacity?(int minCapacity)` | Increases the capacity of this ArrayList instance, if necessary, to ensure that it can hold at least the number of elements specified by the minimum capacity argument. |

| `forEach?(Consumer<? super E> action)` | Performs the given action for each element of the Iterable until all elements have been processed or the action throws an exception. |

| `get?(int index)` | Returns the element at the specified position in this list. |

| `indexOf(Object O)` | The index the first occurrence of a specific element is either returned, or -1 in case the element is not in the list. |

| `isEmpty?()` | Returns true if this list contains no elements. |

| `lastIndexOf(Object O)` | The index of the last occurrence of a specific element is either returned or -1 in case the element is not in the list. |

| `listIterator?()` | Returns a list iterator over the elements in this list (in proper sequence). |

| `listIterator?(int index)` | Returns a list iterator over the elements in this list (in proper sequence), starting at the specified position in the list. |

| `remove?(int index)` | Removes the element at the specified position in this list. |

| `remove?(Object o)` | Removes the first occurrence of the specified element from this list, if it is present. |

| `removeAll?(Collection c)` | Removes from this list all of its elements that are contained in the specified collection. |

| `removeIf?(Predicate filter)` | Removes all of the elements of this collection that satisfy the given predicate. |

| `removeRange?(int fromIndex, int toIndex)` | Removes from this list all of the elements whose index is between fromIndex, inclusive, and toIndex, exclusive. |

| `retainAll?(Collection<?> c)` | Retains only the elements in this list that are contained in the specified collection. |

| `set?(int index, E element)` | Replaces the element at the specified position in this list with the specified element. |

| `size?()` | Returns the number of elements in this list. |

| `spliterator?()` | Creates a late-binding and fail-fast Spliterator over the elements in this list. |

| `subList?(int fromIndex, int toIndex)` | Returns a view of the portion of this list between the specified fromIndex, inclusive, and toIndex, exclusive. |

| `toArray()` | This method is used to return an array containing all of the elements in the list in the correct order. |

| `toArray(Object[] O)` | It is also used to return an array containing all of the elements in this list in the correct order same as the previous method. |

| `trimToSize()` | This method is used to trim the capacity of the instance of the ArrayList to the list’s current size. |