public static boolean compareFile(File file1, File file2) {
  BufferedInputStream in1 = null;
  BufferedInputStream in2 = null;

  try {
    in1 = new BufferedInputStream(new FileInputStream(file1));
    in2 = new BufferedInputStream(new FileInputStream(file2));

    boolean result = true;
    int i;
    do {
      i = in1.read();
      result = (i == in2.read());
    } while ( result && i != -1 );

    return result;
  }
  catch (FileNotFoundException ex) {
    ex.printStackTrace();
  }
  catch (IOException ex) {
    ex.printStackTrace();
  }
  finally {
    close(in1);
    close(in2);
  }

  return false;
}

private static void close( InputStream is ) {
  if ( is != null ) {
    try {
      is.close();
    }
    catch ( IOException ioe ) {
      ioe.printStackTrace();
    }
  }
}