Java ArrayDeque - add() Method

The java.util.ArrayDeque.add() method is used to add a new element at the end of the deque. This method is equivalent to addLast method of the ArrayDeque.

Syntax

public boolean add(E element)

Here, E is the type of element maintained by the container.

Parameters

Return Value

Returns true if the element is successfully added in the deque, else returns false.

Exception

Throws NullPointerException, if the specified element is null.

Example:

In the example below, the java.util.ArrayDeque.add() method is used to add new element at the end of the deque.

import java.util.*;

public class MyClass {
  public static void main(String[] args) {
    //creating a ArrayDeque
    ArrayDeque<Integer> MyDeque = new ArrayDeque<Integer>();

    //populating ArrayDeque using add() method
    MyDeque.add(10);
    MyDeque.add(20);
    MyDeque.add(30);
    MyDeque.add(100);
    MyDeque.add(200);

    //printing ArrayDeque
    System.out.println("MyDeque contains: " + MyDeque);   
  }
}

The output of the above code will be:

MyDeque contains: [10, 20, 30, 100, 200]