THE PACKAGE JAVA.IO

java.io.ByteArrayOutputStream

22.18

22.18 The Class

java.io.ByteArrayOutputStream

A

ByteArrayOutputStream

 contains an internal buffer that accumulates all the

bytes written to the stream since its creation or the most recent call to the

reset

method. At any point, the bytes written to the stream so far may be retrieved in the

form of an array of bytes or a

String

. The bytes written so far may also be copied

to some other output stream. The

size

 method returns the number of characters

written so far.

public class ByteArrayOutputStream extends OutputStream {

protected byte[] buf;

protected int count;

public ByteArrayOutputStream();

public ByteArrayOutputStream(int size);

public void write(int b);

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

throws NullPointerException, IndexOutOfBoundsException;

public int size();

public void reset();

public byte[] toByteArray();

public String toString();

public String toString(int hibyte);

public void writeTo(OutputStream out) throws IOException;

}

22.18.1

protected byte[] buf;

An internal array of bytes. Elements

buf[0]

 through

buf[count 1]

 are the bytes

that have been written to the stream since its creation or the last

reset

 ( 22.18.8)

operation.

22.18.2

protected int count;

This value should always be nonnegative. It is the number of bytes that have been

written to the stream since its creation or the last

reset

 ( 22.18.8) operation.

22.18.3

public ByteArrayOutputStream()

This constructor initializes a newly created

ByteArrayOutputStream

 so that its

internal buffer array has length 32.

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