Prentice.Hall.Introduction.to.Java.Programming,.Brief.Version.9th.(2014).[sharethefiles.com]

720 Chapter 19 Binary I/O
BufferedInputStream
Program
BufferedOutputStream
Program
A block
of data
Buffer
Read
individual
data
A block
of data
Buffer
Write
individual
data
(a)
(b)
FIGURE 19.11
Buffer I/O places data in a buffer for fast processing.
BufferedInputStream/BufferedOutputStream does not contain new methods. All the
methods in BufferedInputStream/BufferedOutputStream are inherited from the
InputStream/OutputStream classes. BufferedInputStream/BufferedOutputStream
manages a buffer behind the scene and automatically reads/writes data from/to disk on
demand.
You can wrap a BufferedInputStream/BufferedOutputStream on any
InputStream/OutputStream using the constructors shown in Figures 19.12 and 19.13.
java.io.InputStream
java.io.FilterInputStream
java.io.BufferedInputStream
+BufferedInputStream(in: InputStream)
+BufferedInputStream(in: InputStream, bufferSize: int)
Creates a BufferedInputStream from an
InputStream object.
Creates a BufferedInputStream from an
InputStream object with specified buffer size.
FIGURE 19.12
BufferedInputStream buffers an input stream.
java.io.OutputStream
java.io.FilterOutputStream
java.io.BufferedOutputStream
+BufferedOutputStream(out: OutputStream)
+BufferedOutputStream(out: OutputStream, bufferSize: int)
Creates a BufferedOutputStream from an
OutputStream object.
Creates a BufferedOutputStream from an
OutputStream object with specified size.
FIGURE 19.13
BufferedOutputStream buffers an output stream.