ArrayList Methods

Question 1

add()

Answer 1

this method returns a boolean and adds the specified object to the end of the arraylist
https://www.geeksforgeeks.org/java-util-arraylist-add-method-java/

Question 2

add(int i, object k)

Answer 2

this method returns void and adds the specified object at the given index (integer i). subsequent objects are shifted plus 1
https://www.geeksforgeeks.org/java-util-arraylist-add-method-java/

Question 3

get(int i)

Answer 3

the get method returns the object at the specified index of the arraylist or an IndexOutOfBounds exception if the object is not found at the specified index
https://www.geeksforgeeks.org/arraylist-get-method-java-examples/

Question 4

forEach​(Consumer action):

Answer 4

Performs the given action for each element of the Iterable until all elements have been processed or the action throws an exception.