java - The method write(int) in the type BufferedWriter is not applicable for the arguments (byte[]) -

i beginner spring,

i trying download file net , store in local disk getting compilation error mentioned in tile

i tried make responseentity , json string worked says image damaged or not supported when try open image

my code:

public static void main(string arg[]) throws ioexception     {             httpheaders requestheaders = new httpheaders();         //requestheaders.setacceptencoding(contentcodingtype.identity);         httpentity<?> requestentity = new httpentity<object>(requestheaders);          // create new resttemplate instance         resttemplate resttemplate = new resttemplate();          // add string message converter         resttemplate.getmessageconverters().add(new stringhttpmessageconverter());          // make http request, marshaling response string         responseentity<byte[]> response = resttemplate.exchange("http://www.nndb.com/people/954/000354889/duke-kahanamoku-2-sized.jpg", httpmethod.get, requestentity,byte[].class);         file file = new file("/users/crohitk/desktop/image.jpg");          // if file doesnt exists, create         if (!file.exists()) {             file.createnewfile();         }         byte[] json =response.getbody();         filewriter fw = new filewriter(file.getabsolutefile());         bufferedwriter bw = new bufferedwriter(fw);         bw.write(json);         bw.close();          system.out.println("done");                system.out.println(response.getbody());         } 

writer used write characters. use outputstream write bytes file.