HELP! * GREY=local LOCAL HTML version of Foils prepared July 10 1996

Foil 183 Input/Output in Java -- (Filter etc.)InputStreams -- II

From Basic Lectures on Java Language Applets Graphics Networking Trip to China and Icase Tutorial -- July 12-28 and June 10-13 96. by Geoffrey C. Fox * See also color IMAGE

There is a clever class called FilterInputStream which can be used to add value to a raw InputStream. You can define your own filters but important ones provided are:
  • BufferedInputStream -- establishs an intermediate buffer to service stream
  • DataInputStream -- allows one to address stream in terms of higher level constructs -- namely read a line, read a long integer etc.
  • LineNumberInputStream -- adds line numbers to a stream
  • PushbackInputStream -- allows one to "unread" a character and put it back on the input stream



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