如何检查这个url在java中是否存在？

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;

public class URLChecker {
    public static boolean checkURL(String urlString) {
        try {
            URL url = new URL(urlString);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("HEAD");
            int responseCode = connection.getResponseCode();
            return (responseCode == HttpURLConnection.HTTP_OK);
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        }
    }

    public static void main(String[] args) {
        String url = "https://www.example.com";
        boolean exists = checkURL(url);
        if (exists) {
            System.out.println("URL exists.");
        } else {
            System.out.println("URL does not exist.");
        }
    }
}