cannot download all the characters from a url in android -

i have download json file , store text file in application. using following code:

public void readandstorefile() throws exception {     try {         url url = new url(address);         urlconnection con = url.openconnection();         int length = con.getcontentlength();         if (length > 0) {             log.i("lenght of bytes received", "" + length);             inputstream fis = con.getinputstream();             inputstreamreader isr = new inputstreamreader(fis);             bufferedreader bf = new bufferedreader(isr);             string content = new string();             string line = null;             while ((line = bf.readline()) != null) {                 content += line;             }             fileoutputstream fos = c.openfileoutput(filename,                     context.mode_private);             bufferedwriter bfw = new bufferedwriter(new outputstreamwriter(                     fos));             bfw.write(content);         } else             throw new negativearraysizeexception();     } catch (exception e) {         throw e;     } } 

but reason whole json file not being downloaded text file. number of characters downloaded , written after downloading , writing stops. why happening?

the url using http://opisop.webuildapps.com/api/shops.json

thank in advance.

ok, found out answer , because of 8k buffer capacity 8192 bytes being read. stripped out buffers , went reading bytes using inputstreamreader , worked out fine.