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ArrayDeque toArray() Method in Java

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  • Last Updated : 10 Dec, 2018
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The java.util.ArrayDeque.toArray() method is used to form an array of the same elements as that of the Deque. Basically, the method copies all the element from this deque to a new array.

Syntax:

Object[] arr = Array_Deque.toArray()

Parameters: The method does not take any parameters.

Return Value: The method returns an array containing the elements present in the ArrayDeque.

Below programs illustrate the java.util.ArrayDeque.toArray() method.
Program 1:




// Java code to illustrate toArray()
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("For");
        de_que.add("Geeks");
  
        // Displaying the ArrayDeque
        System.out.println("The ArrayDeque: " + de_que);
  
        // Creating the array and using toArray()
        Object[] arr = de_que.toArray();
  
        System.out.println("The array is:");
        for (int j = 0; j < arr.length; j++)
            System.out.println(arr[j]);
    }
}

Output:

The ArrayDeque: [Welcome, To, Geeks, For, Geeks]
The array is:
Welcome
To
Geeks
For
Geeks

Program 2:




// Java code to illustrate toArray()
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);
        de_que.add(25);
  
        // Displaying the ArrayDeque
        System.out.println("The ArrayDeque: " + de_que);
  
        // Creating the array and using toArray()
        Object[] arr = de_que.toArray();
  
        System.out.println("The array is:");
        for (int j = 0; j < arr.length; j++)
            System.out.println(arr[j]);
    }
}

Output:

The ArrayDeque: [10, 15, 30, 20, 5, 25]
The array is:
10
15
30
20
5
25

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