public void write(int b) throws IOException {
  log.info("random-write(0x" + Long.toHexString(getFilePointer()) + ",1)");
  _file.write(b);
}

public void write ( int b ) throws IOException { log . info ( "random-write(0x" + Long . toHexString ( getFilePointer ( ) ) + ",1)" ) ; _file . write ( b ) ; }
write a byte to the file , advancing the pointer .
