title: No main function error about maxMind
body: <p>I have a problem about maxmind API. I use some example to test. However, the runtime error "no main function  public static void main(String[] args)" 
  I am confused that I have <code>public static void main</code> already.</p>
  
  <pre><code>public class GetLocationExample {
  
  
      public static void main(String[] args) {
  
          try {
              LookupService lookup = new LookupService("D:\\GeoLiteCity.dat\\GeoLiteCity.dat",LookupService.GEOIP_MEMORY_CACHE);
              Location locationServices = lookup.getLocation("140.118.175.207");
              System.out.println("# country code: " + locationServices.countryCode);
              System.out.println("# country name: " + locationServices.countryName);
              lookup.close();
          }
          catch (IOException e) {
              System.out.println("IO Exception");
          }
  
      }
  }
  </code></pre>