Java Programming

I want to improve my i/o operation. I found that RandomAccessFile doesn't use buffering and i found an article on how to implement faster read operations using buffering(http://www.javaworld.com/javaworld/javatips/jw-javatip26.html). But i am more interesting in improving the write operation part from this class.
But the problem is that write(....) calls the writeBytes method witch is final.(cannot be overriden) . So my question is : Can I improve the writing part of this class and if i can how?

Thanks!