This method is used to insert an element at a specific index in an ArrayList. It shifts the existing elements to the right and increases the size of the ArrayList by one.
Related terms
get(int index): This method retrieves and returns the element at a specified index in an ArrayList.
set(int index, E obj): This method replaces the element at a specified index in an ArrayList with a new element.
remove(int index): This method removes and returns the element at a specified index in an ArrayList.