Thanx Tim and Terrence

i have changed my code like this, and now everything works fine thanx for share your knowledge

public static byte[] getImageAsArray(InputStream inputStream) {

ByteArrayOutputStream baos=new ByteArrayOutputStream();

int abyte; while(true) { try { abyte=inputStream.read();

if (abyte== -1) break;

baos.write(abyte); } catch(Exception e1) { break; } }//while

return baos.toByteArray();

}