ArrayDeque offerLast() Method in Java

The Java.util.ArrayDeque.offerLast(Object element) method in Java is used to add a specific element at the end of this Deque. The function is similar to the addLast(), add() and offer() method of ArrayDeque in Java.

Syntax:

Array_Deque.offerLast(Object element)

Parameters: The parameter element is of the type ArrayDeque and refers to the element to be added at the end of the Deque.



Return Value: The function returns True if the element is successfully added into the deque else it returns false.

Exceptions: The method throws NullPointerException if the passed parameter is NULL.

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

Program 1: Adding String elements into the Deque.

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// Java code to illustrate offerLast()
import java.util.*;
  
public class ArrayDequeDemo {
    public static void main(String args[])
    {
        // Creating an empty ArrayDeque
        Deque<String> de_que = new ArrayDeque<String>();
  
        // Use add() method to add elements into the Deque
        de_que.add("Welcome");
        de_que.add("To");
        de_que.add("Geeks");
        de_que.add("4");
        de_que.add("Geeks");
  
        // Displaying the ArrayDeque
        System.out.println("Initial Deque: " + de_que);
  
        // Using offerLast() to add elements
        de_que.offerLast("Hello");
        de_que.offerLast("World");
  
        // Displaying the ArrayDeque
        System.out.println("Final Deque: " + de_que);
    }
}

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Output:


Initial Deque: [Welcome, To, Geeks, 4, Geeks]
Final Deque: [Welcome, To, Geeks, 4, Geeks, Hello, World]





Program 2: Adding Integer elements into the Deque.











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// Java code to illustrate offerLast() 


import java.util.*; 


  


public class ArrayDequeDemo { 


    public static void main(String args[]) 


    { 


        // Creating an empty ArrayDeque 


        Deque<Integer> de_que = new ArrayDeque<Integer>(); 


  


        // Use add() method to add elements into the Deque 


        de_que.add(10); 


        de_que.add(15); 


        de_que.add(30); 


        de_que.add(20); 


        de_que.add(5); 


  


        // Displaying the ArrayDeque 


        System.out.println("Initial Deque: " + de_que); 


  


        // Using offerLast() to add elements 


        de_que.offerLast(1658); 


        de_que.offerLast(2458); 


  


        // Displaying the ArrayDeque 


        System.out.println("Final Deque: " + de_que); 


    } 


} 



















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Output:


Initial Deque: [10, 15, 30, 20, 5]
Final Deque: [10, 15, 30, 20, 5, 1658, 2458]






          
          
          
          

            

    

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