how to check internet is working or not in java

1import java.io.IOException;
2import java.net.MalformedURLException;
3import java.net.URL;
4import java.net.URLConnection;
5
6public class Tester {
7   public static void main(String[] args) {
8      try {
9         URL url = new URL("http://www.google.com");
10         URLConnection connection = url.openConnection();
11         connection.connect();
12         System.out.println("Internet is connected");
13      } catch (MalformedURLException e) {
14         System.out.println("Internet is not connected");
15      } catch (IOException e) {
16         System.out.println("Internet is not connected");
17      }
18   }
19}