Check if URL exists or not on Server

Question

This is my code which I am using to verify, URL exists or not on Server, but always getting not exist however link is alive

Where I am doing mistake in my code, why

Answer 1

you can use the follow code to try.

    final String customURL = "http://www.desicomments.com/dc3/08/273858/273858.jpg";
            new Thread(){

                @Override
                public void run() {
                    // TODO Auto-generated method stub
                    super.run();
                    try {
                        URL url = new URL(customURL);
                        HttpURLConnection con = (HttpURLConnection) url.openConnection();
                        con.setRequestMethod("HEAD");
                        con.connect();
                        Log.i(TAG, "con.getResponseCode() IS : " + con.getResponseCode());
                        if(con.getResponseCode() == HttpURLConnection.HTTP_OK){
                            Log.i(TAG, "Sucess");
                        }
                    } catch (Exception e) {
                        e.printStackTrace();
                        Log.i(TAG, "fail");
                    }
                }

            }.start();

Reason: After android 2.3, you can't perform a networking operation on its main thread, 

if you do so, there will be can exception and you can't get the right result. So if you want the application to perform a networking operation, you can use another Thread to do it.