 
JAVA PROGRAMMING
Byte
and Character Stream Classes
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Byte streams are defined by using two class
hierarchies. At the top are two abstract classes: InputStream and OutputStream.
Each of these abstract classes has several concrete subclasses.
Character defines are define by using two class
hierarchies. At the tope are two abstract classes, Reader and Writer.
The abstract classes Reader and Writer define several key
methods that the other stream classes implement. Two most important
methods are read() and Writer(), which read and writer
characters of data, respectively.
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