ArrayList | Notion

Modifier and Type	Method and Description
`boolean`	[`add](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#add-E->)([E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>) e)`Appends the specified element to the end of this list.
`void`	[`add](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#add-int-E->)(int index, [E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>) element)`Inserts the specified element at the specified position in this list.
`boolean`	[`addAll](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#addAll-java.util.Collection->)([Collection](<https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html>)<? extends [E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)> c)`Appends all of the elements in the specified collection to the end of this list, in the order that they are returned by the specified collection's Iterator.
`boolean`	[`addAll](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#addAll-int-java.util.Collection->)(int index, [Collection](<https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html>)<? extends [E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)> c)`Inserts all of the elements in the specified collection into this list, starting at the specified position.
`void`	[`clear](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#clear-->)()`Removes all of the elements from this list.
`Object`	[`clone](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#clone-->)()`Returns a shallow copy of this ArrayList instance.
`boolean`	[`contains](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#contains-java.lang.Object->)([Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>) o)`Returns true if this list contains the specified element.
`void`	[`ensureCapacity](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#ensureCapacity-int->)(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.
`void`	[`forEach](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#forEach-java.util.function.Consumer->)([Consumer](<https://docs.oracle.com/javase/8/docs/api/java/util/function/Consumer.html>)<? super [E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)> action)`Performs the given action for each element of the `Iterable` until all elements have been processed or the action throws an exception.
`E`	[`get](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#get-int->)(int index)`Returns the element at the specified position in this list.
`int`	[`indexOf](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#indexOf-java.lang.Object->)([Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>) o)`Returns the index of the first occurrence of the specified element in this list, or -1 if this list does not contain the element.
`boolean`	[`isEmpty](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#isEmpty-->)()`Returns true if this list contains no elements.
[`Iterator](<https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html>)<[E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)>`	[`iterator](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#iterator-->)()`Returns an iterator over the elements in this list in proper sequence.
`int`	[`lastIndexOf](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#lastIndexOf-java.lang.Object->)([Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>) o)`Returns the index of the last occurrence of the specified element in this list, or -1 if this list does not contain the element.
[`ListIterator](<https://docs.oracle.com/javase/8/docs/api/java/util/ListIterator.html>)<[E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)>`	[`listIterator](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#listIterator-->)()`Returns a list iterator over the elements in this list (in proper sequence).
[`ListIterator](<https://docs.oracle.com/javase/8/docs/api/java/util/ListIterator.html>)<[E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)>`	[`listIterator](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#listIterator-int->)(int index)`Returns a list iterator over the elements in this list (in proper sequence), starting at the specified position in the list.
`E`	[`remove](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#remove-int->)(int index)`Removes the element at the specified position in this list.
`boolean`	[`remove](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#remove-java.lang.Object->)([Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>) o)`Removes the first occurrence of the specified element from this list, if it is present.
`boolean`	[`removeAll](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#removeAll-java.util.Collection->)([Collection](<https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html>)<?> c)`Removes from this list all of its elements that are contained in the specified collection.
`boolean`	[`removeIf](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#removeIf-java.util.function.Predicate->)([Predicate](<https://docs.oracle.com/javase/8/docs/api/java/util/function/Predicate.html>)<? super [E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)> filter)`Removes all of the elements of this collection that satisfy the given predicate.
`protected void`	[`removeRange](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#removeRange-int-int->)(int fromIndex, int toIndex)`Removes from this list all of the elements whose index is between `fromIndex`, inclusive, and `toIndex`, exclusive.
`void`	[`replaceAll](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#replaceAll-java.util.function.UnaryOperator->)([UnaryOperator](<https://docs.oracle.com/javase/8/docs/api/java/util/function/UnaryOperator.html>)<[E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)> operator)`Replaces each element of this list with the result of applying the operator to that element.
`boolean`	[`retainAll](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#retainAll-java.util.Collection->)([Collection](<https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html>)<?> c)`Retains only the elements in this list that are contained in the specified collection.
`E`	[`set](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#set-int-E->)(int index, [E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>) element)`Replaces the element at the specified position in this list with the specified element.
`int`	[`size](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#size-->)()`Returns the number of elements in this list.
`void`	[`sort](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#sort-java.util.Comparator->)([Comparator](<https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html>)<? super [E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)> c)`Sorts this list according to the order induced by the specified `Comparator`.
[`Spliterator](<https://docs.oracle.com/javase/8/docs/api/java/util/Spliterator.html>)<[E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)>`	[`spliterator](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#spliterator-->)()`Creates a late-binding and fail-fast `Spliterator` over the elements in this list.
[`List](<https://docs.oracle.com/javase/8/docs/api/java/util/List.html>)<[E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)>`	[`subList](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#subList-int-int->)(int fromIndex, int toIndex)`Returns a view of the portion of this list between the specified `fromIndex`, inclusive, and `toIndex`, exclusive.
[`Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>)[]`	[`toArray](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#toArray-->)()`Returns an array containing all of the elements in this list in proper sequence (from first to last element).
`<T> T[]`	[`toArray](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#toArray-T:A->)(T[] a)`Returns an array containing all of the elements in this list in proper sequence (from first to last element); the runtime type of the returned array is that of the specified array.
`void`	[`trimToSize](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#trimToSize-->)()`Trims the capacity of this ArrayList instance to be the list's current size.

Modifier and Type	Method and Description
`boolean`	[`add](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#add-E->)([E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>) e)`Appends the specified element to the end of this list.
`void`	[`add](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#add-int-E->)(int index, [E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>) element)`Inserts the specified element at the specified position in this list.
`boolean`	[`addAll](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#addAll-java.util.Collection->)([Collection](<https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html>)<? extends [E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)> c)`Appends all of the elements in the specified collection to the end of this list, in the order that they are returned by the specified collection's Iterator.
`boolean`	[`addAll](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#addAll-int-java.util.Collection->)(int index, [Collection](<https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html>)<? extends [E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)> c)`Inserts all of the elements in the specified collection into this list, starting at the specified position.
`void`	[`clear](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#clear-->)()`Removes all of the elements from this list.
`Object`	[`clone](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#clone-->)()`Returns a shallow copy of this ArrayList instance.
`boolean`	[`contains](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#contains-java.lang.Object->)([Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>) o)`Returns true if this list contains the specified element.
`void`	[`ensureCapacity](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#ensureCapacity-int->)(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.
`void`	[`forEach](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#forEach-java.util.function.Consumer->)([Consumer](<https://docs.oracle.com/javase/8/docs/api/java/util/function/Consumer.html>)<? super [E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)> action)`Performs the given action for each element of the `Iterable` until all elements have been processed or the action throws an exception.
`E`	[`get](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#get-int->)(int index)`Returns the element at the specified position in this list.
`int`	[`indexOf](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#indexOf-java.lang.Object->)([Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>) o)`Returns the index of the first occurrence of the specified element in this list, or -1 if this list does not contain the element.
`boolean`	[`isEmpty](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#isEmpty-->)()`Returns true if this list contains no elements.
[`Iterator](<https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html>)<[E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)>`	[`iterator](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#iterator-->)()`Returns an iterator over the elements in this list in proper sequence.
`int`	[`lastIndexOf](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#lastIndexOf-java.lang.Object->)([Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>) o)`Returns the index of the last occurrence of the specified element in this list, or -1 if this list does not contain the element.
[`ListIterator](<https://docs.oracle.com/javase/8/docs/api/java/util/ListIterator.html>)<[E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)>`	[`listIterator](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#listIterator-->)()`Returns a list iterator over the elements in this list (in proper sequence).
[`ListIterator](<https://docs.oracle.com/javase/8/docs/api/java/util/ListIterator.html>)<[E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)>`	[`listIterator](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#listIterator-int->)(int index)`Returns a list iterator over the elements in this list (in proper sequence), starting at the specified position in the list.
`E`	[`remove](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#remove-int->)(int index)`Removes the element at the specified position in this list.
`boolean`	[`remove](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#remove-java.lang.Object->)([Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>) o)`Removes the first occurrence of the specified element from this list, if it is present.
`boolean`	[`removeAll](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#removeAll-java.util.Collection->)([Collection](<https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html>)<?> c)`Removes from this list all of its elements that are contained in the specified collection.
`boolean`	[`removeIf](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#removeIf-java.util.function.Predicate->)([Predicate](<https://docs.oracle.com/javase/8/docs/api/java/util/function/Predicate.html>)<? super [E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)> filter)`Removes all of the elements of this collection that satisfy the given predicate.
`protected void`	[`removeRange](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#removeRange-int-int->)(int fromIndex, int toIndex)`Removes from this list all of the elements whose index is between `fromIndex`, inclusive, and `toIndex`, exclusive.
`void`	[`replaceAll](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#replaceAll-java.util.function.UnaryOperator->)([UnaryOperator](<https://docs.oracle.com/javase/8/docs/api/java/util/function/UnaryOperator.html>)<[E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)> operator)`Replaces each element of this list with the result of applying the operator to that element.
`boolean`	[`retainAll](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#retainAll-java.util.Collection->)([Collection](<https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html>)<?> c)`Retains only the elements in this list that are contained in the specified collection.
`E`	[`set](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#set-int-E->)(int index, [E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>) element)`Replaces the element at the specified position in this list with the specified element.
`int`	[`size](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#size-->)()`Returns the number of elements in this list.
`void`	[`sort](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#sort-java.util.Comparator->)([Comparator](<https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html>)<? super [E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)> c)`Sorts this list according to the order induced by the specified `Comparator`.
[`Spliterator](<https://docs.oracle.com/javase/8/docs/api/java/util/Spliterator.html>)<[E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)>`	[`spliterator](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#spliterator-->)()`Creates a late-binding and fail-fast `Spliterator` over the elements in this list.
[`List](<https://docs.oracle.com/javase/8/docs/api/java/util/List.html>)<[E](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html>)>`	[`subList](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#subList-int-int->)(int fromIndex, int toIndex)`Returns a view of the portion of this list between the specified `fromIndex`, inclusive, and `toIndex`, exclusive.
[`Object](<https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html>)[]`	[`toArray](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#toArray-->)()`Returns an array containing all of the elements in this list in proper sequence (from first to last element).
`<T> T[]`	[`toArray](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#toArray-T:A->)(T[] a)`Returns an array containing all of the elements in this list in proper sequence (from first to last element); the runtime type of the returned array is that of the specified array.
`void`	[`trimToSize](<https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html#trimToSize-->)()`Trims the capacity of this ArrayList instance to be the list's current size.