read .gz file in java

Hi:

I need to download a .gz file online. Inside the gzip file is one csv file. All is well except that I am only getting first line (the table head) of the file.  Here's the code, please help:

String url  = new URL ("myurl");
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setDoOutput(true);
con.setRequestMethod("GET");
con.setRequestProperty("Cookie",cookielist.toString());
con.getContent();
                                    
BufferedInputStream in = new BufferedInputStream(con.getInputStream());
GZIPInputStream gzin = new GZIPInputStream(in);
BufferedReader br = new BufferedReader(new InputStreamReader(gzin));
while ((line=br.readLine())!=null) {
     System.out.println("read: " + line);
}