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Java ArrayDeque toArray() Method with Example

ArrayDeque Class toArray() method: Here, we are going to learn about the toArray() method of ArrayDeque Class with its syntax and example.
Submitted by Preeti Jain, on January 17, 2020

ArrayDeque Class toArray() method

• toArray() method is available in java.lang package.
• toArray() method is used to return an object array that contains all of the elements in the same order as inserted in this deque.
• toArray() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
• toArray() method does not throw an exception at the time of returning an array of elements of "Object"”.

Syntax:

    public Object[] toArray();

Parameter(s):

• It does not accept any parameter.

Return value:

The return type of this method is Object [], it returns an array of "Object" type that contains all the elements in this deque.

Example:

// Java program to demonstrate the example 
// of Object[] toArray() method of ArrayDeque 

import java.util.*;

public class ToArrayOfArrayDeque {
    public static void main(String[] args) {
        // Creating an ArrayDeque with initial capacity of
        // storing elements
        Deque < String > d_queue = new ArrayDeque < String > (10);

        // By using add() method to add elements
        // in ArrayDeque
        d_queue.add("C");
        d_queue.add("C++");
        d_queue.add("Java");
        d_queue.add("Php");
        d_queue.add("DotNet");

        // Display Deque Elements
        System.out.println("d_queue : ");
        System.out.println("ArrayDeque Elements = " + d_queue);

        //By using toArray() method is to convert the
        //given ArrayDeque to array

        Object[] o = d_queue.toArray();

        System.out.println();

        for (int i = 0; i < o.length; ++i)
            System.out.println("Deque Elements = " + o[i]);
    }
}

Output

d_queue : 
ArrayDeque Elements = [C, C++, Java, Php, DotNet]

Deque Elements = C
Deque Elements = C++
Deque Elements = Java
Deque Elements = Php
Deque Elements = DotNet