rafile = new RandomAccessFile(file,access);
channel = rafile.getChannel();
mapBuff = channel.map("r".equals(access)?MapMode.READ_ONLY:MapMode.READ_WRITE,0,channel.size());
rafile = new RandomAccessFile(file,access);
channel = rafile.getChannel();
mapBuff = channel.map("r".equals(access)?MapMode.READ_ONLY:MapMode.READ_WRITE,0,channel.size());