The toArray() method of Stack class in Java is used to form an array of the same elements as that of the Stack. Basically, it copies all the element from a Stack to a new array.
Syntax:
Object[] arr = Stack.toArray()
Parameters: The method does not take any parameters.
Return Value: The method returns an array containing the elements similar to the Stack.
Below programs illustrate the Stack.toArray() method:
Program 1:
// Java code to illustrate toArray()  import java.util.*;  public class StackDemo {    public static void main(String args[])    {        // Creating an empty Stack        Stack<String> stack = new Stack<String>();          // Use add() method to add elements into the Stack        stack.add("Welcome");        stack.add("To");        stack.add("Geeks");        stack.add("For");        stack.add("Geeks");          // Displaying the Stack        System.out.println("The Stack: " + stack);          // Creating the array and using toArray()        Object[] arr = stack.toArray();          System.out.println("The array is:");        for (int j = 0; j < arr.length; j++)            System.out.println(arr[j]);    }} |
Output:
The Stack: [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 StackDemo {    public static void main(String args[])    {        // Creating an empty Stack        Stack<Integer> stack = new Stack<Integer>();          // Use add() method to add elements into the Stack        stack.add(10);        stack.add(15);        stack.add(30);        stack.add(20);        stack.add(5);        stack.add(25);          // Displaying the Stack        System.out.println("The Stack: " + stack);          // Creating the array and using toArray()        Object[] arr = stack.toArray();          System.out.println("The array is:");        for (int j = 0; j < arr.length; j++)            System.out.println(arr[j]);    }} |
Output:
The Stack: [10, 15, 30, 20, 5, 25] The array is: 10 15 30 20 5 25
