1. Introduction

In Java, a HashSet is part of the Collections Framework and is used to store unique elements. The contains method in HashSet is employed to check whether a particular element is present in the set. It returns true if the element is found, otherwise false.

2. Program Steps

1. Initialize a HashSet and populate it with some elements.

2. Utilize the contains method to verify if a specific element is in the HashSet.

3. Print the result to the console.

3. Code Program

import java.util.HashSet;

public class HashSetContains {

    public static void main(String[] args) {

        // Step 1: Initialize a HashSet and populate it with some elements
        HashSet<String> fruits = new HashSet<>();
        fruits.add("Apple");
        fruits.add("Banana");
        fruits.add("Cherry");

        // Step 2: Utilize the contains method to verify if a specific element is in the HashSet
        boolean containsBanana = fruits.contains("Banana");

        // Step 3: Print the result to the console
        System.out.println("Does the HashSet contain Banana? " + containsBanana);
    }
}

Output:

Does the HashSet contain Banana? true

4. Step By Step Explanation

Step 1: A HashSet named fruits is initialized and populated with several elements.

Step 2: The contains method is utilized to check whether the element "Banana" is present in the HashSet. It returns true, indicating that the element exists in the set.

Step 3: The outcome of the contains method is printed to the console, confirming that "Banana" is indeed present in the HashSet.