java - not able to transfer Image file -

hi client program transfering image , while transfering image file getting corrupted , not able open image file , i'm not able identify bug , can 1 me.

datainputstream input = new datainputstream(s.getinputstream());  dataoutputstream output = new dataoutputstream(s.getoutputstream());  system.out.println("writing.......");  fileinputstream fstream = new fileinputstream("blue hills.jpg");  datainputstream in = new datainputstream(fstream);  byte[] buffer = new byte[1000]; int bytes = 0;  while ((bytes = fstream.read(buffer)) != -1) {     output.write(buffer, 0, bytes); }  in.close(); 

i assume s socket , you're attempting transfer file on network? here's example of sending file sockets. sets server socket in thread , connects itself.

public static void main(string[] args) throws ioexception {     new thread() {         public void run() {             try {                 serversocket ss = new serversocket(3434);                 socket socket = ss.accept();                 inputstream in = socket.getinputstream();                 fileoutputstream out = new fileoutputstream("out.jpg");                 copy(in, out);                 out.close();                 in.close();             } catch (ioexception e) {                 e.printstacktrace();             }         }     }.start();      socket socket = new socket("localhost", 3434);     outputstream out = socket.getoutputstream();     fileinputstream in = new fileinputstream("in.jpg");     copy(in, out);     out.close();     in.close(); }  public static void copy(inputstream in, outputstream out) throws ioexception {     byte[] buf = new byte[8192];     int len = 0;     while ((len = in.read(buf)) != -1) {         out.write(buf, 0, len);     } }