A problem in response of http request

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Java

Mobile

Blackberry

I try to receive a response from sending a http request in blackberry. It correctly open the Http Connector. But It can't receive the response. The code I used yo recieve the response is mentioned below.

String url="https://www.google.lk/";
HttpConnection con = null;
InputStream is = null;

try {
    con = (HttpConnection) Connector.open(url);
    int responseCode = con.getResponseCode();
    Dialog.alert(String.valueOf(responseCode ));
   }
catch(Exception e)
{
	Dialog.alert(e.getMessage());
}

The code is not shown a alert as expected in the code. And also any exception is not occurred while running the application on Blackberry simulator. Is any error in above code?