22.20

java.io.BufferedOutputStream

THE PACKAGE JAVA.IO

22.20 The Class

java.io.BufferedOutputStream

A

BufferedOutputStream

 adds functionality to another output stream, namely

the ability to buffer the output. When the

BufferedOutputStream

 is created, an

internal buffer array is created. As bytes are written to the stream, they are stored

in the internal buffer, which is flushed as necessary, thereby performing output to

the contained output stream in large blocks rather than a byte at a time.

public class BufferedOutputStream extends FilterOutputStream {

protected byte[] buf;

protected int count;

public BufferedOutputStream(OutputStream out);

public BufferedOutputStream(OutputStream out, int size);

public void write(int b) throws IOException;

public void write(byte[] b)

throws IOException, NullPointerException;

public void write(byte[] b, int off, int len)

throws IOException, NullPointerException,

IndexOutOfBoundsException;

public void flush() throws IOException;

}

22.20.1

protected byte[] buf;

The internal buffer array.

22.20.2

protected int count;

This value is always in the range

0

 through

buf.length

; elements

buf[0]

through

buf[count 1]

contain valid byte data.

22.20.3

public BufferedOutputStream(OutputStream out)

This constructor initializes a newly created

BufferedOutputStream

 by saving its

argument, the input stream

out

, for later use. An internal buffer array is created

and stored in

buf

.

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