The Java.util.Stack.hashCode() method in Java is used to get the hashcode value of this Stack.
Syntax:
Stack.hashCode()
Parameters: The method does not take any parameter.
Return Value: The method returns hash code value of this Stack which is of Integer type.
Below programs illustrate the Java.util.Stack.hashCode() method:
Program 1: Stack with string elements.
// Java code to illustrate hashCode()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("4");        stack.add("Geeks");          // Displaying the Stack        System.out.println("Stack: " + stack);          // Displaying the hashCode value of Stack        System.out.println("The hashCode value is: "                           + stack.hashCode());    }} |
Output:
Stack: [Welcome, To, Geeks, 4, Geeks] The hashCode value is: -878886256
Program 2: Stack with integer elements.
// Java code to illustrate hashCode()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(20);        stack.add(30);        stack.add(40);        stack.add(50);          // Displaying the Stack        System.out.println("Stack: " + stack);          // Displaying the hashCode value of Stack        System.out.println("The hashCode value is: "                           + stack.hashCode());    }} |
Output:
Stack: [10, 20, 30, 40, 50] The hashCode value is: 38490301
