From Java Tutorial - Spring 1997 Part 4: Multithreading, useful Java classes, I/O, Networking, and the future Peking Tutorial, Web Certificate -- Spring-Summer 1997. byNancy J. McCracken,Geoffrey C. Fox
The subclasses of InputStream offer more methods that can read the stream in a more structured way or provide other functionality.
Standard UNIX file I/O methods are available
FileInputStream s = new FileInputStream("/usr/gcf/greatidea");