Get distinct words from a given file in Java

import java.io.*;
import java.util.HashSet;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.logging.Level;
import java.util.logging.Logger;

public class DistinctWords {

    private static final Logger LOGGER = Logger.getLogger("DistinctWords");

    public Set<String> getDistinctWords(String fileName) {
        Set<String> wordSet = new HashSet<>();
        try (BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(fileName)))) {
            String line;
            while ((line = br.readLine()) != null) {
                StringTokenizer st = new StringTokenizer(line, " ,.;:\"");
                while (st.hasMoreTokens()) {
                    wordSet.add(st.nextToken().toLowerCase());
                }
            }
        } catch (IOException e) {
            LOGGER.log(Level.SEVERE, "IOException occurred", e);
        }
        return wordSet;
    }

    public static void main(String[] args) {
        DistinctWords distinctFileWords = new DistinctWords();
        Set<String> wordList = distinctFileWords.getDistinctWords("<path-to-file>");
        for (String str : wordList) {
            System.out.println(str);
        }
    }

}

import java.io.File
import java.util.*

class DistinctWords {
    fun getDistinctWords(fileName: String): Set<String> {
        val wordSet: MutableSet<String> = HashSet()
        File(fileName).forEachLine { line ->
            val words = line.split(" ,.;:\"")
            words.forEach { t: String -> wordSet.add(t) }
        }
        return wordSet
    }
}

fun main() {
    val distinctFileWords = DistinctWords()
    val wordList = distinctFileWords.getDistinctWords("<path-to-file>")
    wordList.forEach { str ->
        println(str)
    }
}