ArrayList Class Flashcards

AP CSA

int size()

Returns the number of elements in the list.

boolean add(E obj)

Appends obj to the end of the list; always returns true.

void add(int index, E obj)

Inserts obj at index. Shifts existing elements to the right.

E get(int index)

Returns the element at the specified index.

E set(int index)

Replaces the element at index with obj. Returns the old element.

E remove(int index)

Removes the element at index. Shifts elements to the left. Returns the removed element.