The toString() method of Java Stack is used to return a string representation of the elements of the Collection.
The String representation comprises a set representation of the elements of the Collection in the order they are picked by the iterator closed in square brackets[].This method is used mainly to display collections other than String type(for instance: Object, Integer)in a String Representation.
Syntax:
public String toString()
Parameter The method does not take any parameters.
Return This method returns a String representation of the collection.
Below examples illustrate the toString() method:
Example 1:
// Java program to demonstrate// Stack toString() method  import java.util.*;  public class collection {    public static void main(String args[])    {        // Creating an Empty Stack        Stack<String> stack            = new Stack<String>();          // Use add() method        // to add elements to the Collection        stack.add("Welcome");        stack.add("To");        stack.add("Geeks");        stack.add("For");        stack.add("Geeks");          // Using toString() method        System.out.println(stack.toString());    }} |
Output:
[Welcome, To, Geeks, For, Geeks]
Example 2:
// Java program to demonstrate// Stack toString() method  import java.util.*;  public class collection {    public static void main(String args[])    {        // Creating an Empty Stack        Stack<Integer> stack            = new Stack<Integer>();          // Use add() method        // to add elements to the Collection        stack.add(10);        stack.add(20);        stack.add(30);        stack.add(40);          // Using toString() method        System.out.println(stack.toString());    }} |
Output:
[10, 20, 30, 40]
