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]); }} |
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]); }} |
The ArrayDeque: [10, 15, 30, 20, 5, 25] The array is: 10 15 30 20 5 25
Attention reader! Don’t stop learning now. Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready. To complete your preparation from learning a language to DS Algo and many more, please refer Complete Interview Preparation Course.
