byte-oriented output stream (look at the diagram a few pages back)
Here are classes that descend from Writer,
an abstract class from which all
character-oriented output streams are derived.
All these streams are aimed at receiving 16-bit
char data from a program,
and sending it to another destination,
which may use a different character
format (such as UTF format on a disk file).
All these classes are character-oriented output streams.
PrintWriter has already been used in these chapters.
For now, it is the only one you are likely to need.
(Review: ) What type of data does an InputStream handle?