ArrayDeque addLast() Method in Java

The java.util.ArrayDeque.addLast(Object element) method in Java is used to insert a specific element at the end of this deque. It is similar to the add() method in Java. Syntax:

Array_Deque.addLast(Object element)

Parameters: The parameter element is of the type ArrayDeque and refers to the element to be added. Return Value: The function does not return any value. Exceptions: The method throws NullPointerException if the passed parameter is NULL. 

The Time Complexity of this addLast(Object element) is O(1) i.e Constant.

Below programs illustrate the Java.util.ArrayDeque.addLast() method: 

Program 1: Adding Integers to the Deque. 

ArrayDeque: [10, 15, 30, 20, 5]
ArrayDeque_end_addition: [10, 15, 30, 20, 5, 40, 50, 60, 70]

Program 2: Adding String to the Deque.