Stack hashCode() method in Java with Example

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.

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// 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());
    }
}

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Output:

Stack: [Welcome, To, Geeks, 4, Geeks]
The hashCode value is: -878886256

Program 2: Stack with integer elements.

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// 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());
    }
}

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Output:

Stack: [10, 20, 30, 40, 50]
The hashCode value is: 38490301


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