Testing internet connection

TestInternet.java

import java.net.HttpURLConnection;
import java.net.URL;
import java.time.Duration;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

public class TestInternet {
    public static void main(String[] args) throws Exception {
        new TestInternet().run();
    }

    private void run() throws Exception {
        String[] urls = new String[]{
                "https://www.google.com",
                "http://www.google.com"
        };

        for (String url : urls) {
            synchronized (TestInternet.class) {
                if (isReachable(url)) {
                    System.out.printf("%s OK\n", getTime());
                } else {
                    System.out.printf("%s NOK\n", getTime());
                }

            }
        }
    }

    public boolean isReachable(String url) {
        HttpURLConnection connection = null;
        try {
            System.out.printf("%s connecting %s ...\n", getTime(), url);
            connection = (HttpURLConnection) new URL(url).openConnection();
            connection.setConnectTimeout((int) Duration.ofSeconds(2).toMillis());
            connection.setReadTimeout((int) Duration.ofSeconds(3).toMillis());
            System.out.println(connection.getPermission());
            Object objData = connection.getContent();
        } catch (Exception e) {
            System.out.printf("%s ERROR: %s\n", getTime(), e.getMessage());
            return false;
        } finally {
            if (connection != null) {
                connection.disconnect();
            }
        }
        return true;
    }

    private String getTime() {
        return LocalDateTime.now().format(DateTimeFormatter.ISO_LOCAL_DATE_TIME);
    }
}