1. Introduction

Joining elements of a Set in Java is a common task. Since Set is a part of the Java Collections Framework, we can utilize the String.join() method, similar to List, to concatenate the elements of a Set with a specified delimiter.

2. Program Steps

1. Create a Set of String.

2. Use the String.join() method to join the elements of the set with a delimiter.

3. Print the resulting String to the console.

3. Code Program

import java.util.Set;
import java.util.HashSet;

public class SetJoinExample {

    public static void main(String[] args) {
        // Step 1: Create a Set of String
        Set<String> fruits = new HashSet<>(Set.of("Apple", "Banana", "Cherry", "Date"));

        // Step 2: Use the String.join() method to join the elements of the set with a delimiter
        String result = String.join(", ", fruits);

        // Step 3: Print the resulting String to the console
        System.out.println(result);
    }
}

Output:

Apple, Banana, Cherry, Date

4. Step By Step Explanation

Step 1: We initialize a Set of String containing various fruit names. The order of elements in a Set is not guaranteed, but for simplicity, we will assume they are printed in the order they were added.

Step 2: We use the String.join() method to concatenate the elements of the Set, inserting a comma and a space between each element.

Step 3: Finally, we print out the resulting String to the console, showing the elements of the Set joined by the specified delimiter.