org.apache.commons.io.output
Class ByteArrayOutputStream
OutputStream
org.apache.commons.io.output.ByteArrayOutputStream
public class ByteArrayOutputStream
extends OutputStream
This class implements an output stream in which the data is
written into a byte array. The buffer automatically grows as data
is written to it.
The data can be retrieved using
toByteArray()
and
toString()
.
Closing a
ByteArrayOutputStream has no effect. The methods in
this class can be called after the stream has been closed without
generating an
IOException.
This is an alternative implementation of the java.io.ByteArrayOutputStream
class. The original implementation only allocates 32 bytes at the beginning.
As this class is designed for heavy duty it starts at 1024 bytes. In contrast
to the original it doesn't reallocate the whole memory block but allocates
additional buffers. This way no buffers need to be garbage collected and
the contents don't have to be copied to the new buffer. This class is
designed to behave exactly like the original. The only exception is the
deprecated toString(int) method that has been ignored.
$Id: ByteArrayOutputStream.java 369075 2006-01-14 18:23:42Z scolebourne $
void | close() - Closing a ByteArrayOutputStream has no effect.
|
private byte[] | getBuffer(int index) - Return the appropriate
byte[] buffer
specified by index.
|
private void | needNewBuffer(int newcount) - Makes a new buffer available either by allocating
a new one or re-cycling an existing one.
|
void | reset()
|
int | size()
|
byte[] | toByteArray()
|
String | toString()
|
String | toString(String enc)
|
void | write(byte[] b, int off, int len)
|
void | write(int b) - Calls the write(byte[]) method.
|
void | writeTo(OutputStream out)
|
buffers
private List buffers
currentBuffer
private byte[] currentBuffer
currentBufferIndex
private int currentBufferIndex
filledBufferSum
private int filledBufferSum
ByteArrayOutputStream
public ByteArrayOutputStream()
Creates a new byte array output stream. The buffer capacity is
initially 1024 bytes, though its size increases if necessary.
ByteArrayOutputStream
public ByteArrayOutputStream(int size)
Creates a new byte array output stream, with a buffer capacity of
the specified size, in bytes.
close
public void close()
throws IOException
Closing a ByteArrayOutputStream has no effect. The methods in
this class can be called after the stream has been closed without
generating an IOException.
getBuffer
private byte[] getBuffer(int index)
Return the appropriate byte[]
buffer
specified by index.
index
- the index of the buffer required
needNewBuffer
private void needNewBuffer(int newcount)
Makes a new buffer available either by allocating
a new one or re-cycling an existing one.
newcount
- the size of the buffer if one is created
reset
public void reset()
java.io.ByteArrayOutputStream.reset()
size
public int size()
java.io.ByteArrayOutputStream.size()
toByteArray
public byte[] toByteArray()
java.io.ByteArrayOutputStream.toByteArray()
toString
public String toString()
java.io.ByteArrayOutputStream.toString()
toString
public String toString(String enc)
throws UnsupportedEncodingException
java.io.ByteArrayOutputStream.toString(String)
write
public void write(byte[] b,
int off,
int len)
java.io.OutputStream.write(byte[], int, int)
write
public void write(int b)
Calls the write(byte[]) method.
java.io.OutputStream.write(int)
writeTo
public void writeTo(OutputStream out)
throws IOException
java.io.ByteArrayOutputStream.writeTo(OutputStream)