Given a Set of String, the task is to convert the Set to a comma separated String in Java.
Examples:
Input: Set<String> = ["Geeks", "ForGeeks", "GeeksForGeeks"] Output: "Geeks, For, Geeks" Input: Set<String> = ["G", "e", "e", "k", "s"] Output: "G, e, e, k, s"
Approach: This can be achieved with the help of join() method of String as follows.
- Get the Set of String.
- Form a comma separated String from the Set of String using join() method by passing comma ‘, ‘ and the set as parameters.
- Print the String.
Below is the implementation of the above approach:
// Java program to convert Set of String// to comma separated String  import java.util.*;  public class GFG {    public static void main(String args[])    {          // Get the Set of String        Set<String>            set = new HashSet<>(                Arrays                    .asList("Geeks",                            "ForGeeks",                            "GeeksForGeeks"));          // Print the Set of String        System.out.println("Set of String: " + set);          // Convert the Set of String to String        String string = String.join(", ", set);          // Print the comma separated String        System.out.println("Comma separated String: "                           + string);    }} |
Output:
Set of String: [ForGeeks, Geeks, GeeksForGeeks] Comma separated String: ForGeeks, Geeks, GeeksForGeeks
