Get the entry name for JarURLConnection in Java

/*from  w  w w . ja  v  a  2  s  .c  o m*/
import java.net.JarURLConnection;
import java.net.URL;

public class Main {
  public static void main(String[] argv) throws Exception {
    URL url = new URL("jar:file:/c://my.jar!/");
    JarURLConnection conn = (JarURLConnection) url.openConnection();

    String entryName = conn.getEntryName();
    System.out.println(entryName);
  }
}