Class java.util.zip.DeflaterOutputStream 
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Class java.util.zip.DeflaterOutputStream 

Object
   |
   +----OutputStream
           |
           +----FilterOutputStream
                   |
                   +----java.util.zip.DeflaterOutputStream
public class DeflaterOutputStream
extends FilterOutputStream
This class implements an output stream filter for compressing data in the "deflate" compression format. It is also used as the basis for other types of compression filters, such as GZIPOutputStream.

Version:
1.17, 01/30/97
Author:
David Connelly
See Also:
Deflater

Variable Index

o buf
Output buffer for writing compressed data.
o def
Compressor for this stream.

Constructor Index

o java.util.zip.DeflaterOutputStream(OutputStream, Deflater, int)
Creates a new output stream with the specified compressor and buffer size.
o java.util.zip.DeflaterOutputStream(OutputStream, Deflater)
Creates a new output stream with the specified compressor and a default buffer size.
o java.util.zip.DeflaterOutputStream(OutputStream)
Creates a new output stream with a defaul compressor and buffer size.

Method Index

o close()
Writes remaining compressed data to the output stream and closes the underlying stream.
o deflate()
Writes next block of compressed data to the output stream.
o finish()
Finishes writing compressed data to the output stream without closing the underlying stream.
o write(int)
Writes a byte to the compressed output stream.
o write(byte[], int, int)
Writes an array of bytes to the compressed output stream.

Variables

o buf 
protected byte[] buf
Output buffer for writing compressed data.

o def 
protected java.util.zip.Deflater def
Compressor for this stream.

Constructors

o DeflaterOutputStream 
public DeflaterOutputStream(OutputStream out,
                            Deflater def,
                            int size)
Creates a new output stream with the specified compressor and buffer size.

Parameters:
out - the output stream
def - the compressor ("deflater")
len - the output buffer size
o DeflaterOutputStream 
public DeflaterOutputStream(OutputStream out,
                            Deflater def)
Creates a new output stream with the specified compressor and a default buffer size.

Parameters:
out - the output stream
def - the compressor ("deflater")
o DeflaterOutputStream 
public DeflaterOutputStream(OutputStream out)
Creates a new output stream with a defaul compressor and buffer size.

Methods

o close 
public void close() throws IOException
Writes remaining compressed data to the output stream and closes the underlying stream.

Throws: IOException
if an I/O error has occurred
Overrides:
close in class FilterOutputStream
o deflate 
protected void deflate() throws IOException
Writes next block of compressed data to the output stream.

o finish 
public void finish() throws IOException
Finishes writing compressed data to the output stream without closing the underlying stream. Use this method when applying multiple filters in succession to the same output stream.

Throws: IOException
if an I/O error has occurred
o write 
public void write(int b) throws IOException
Writes a byte to the compressed output stream. This method will block until the byte can be written.

Parameters:
b - the byte to be written
Throws: IOException
if an I/O error has occurred
Overrides:
write in class FilterOutputStream
o write 
public void write(byte b,
                  int off,
                  int len) throws IOException
Writes an array of bytes to the compressed output stream. This method will block until all the bytes are written.

Parameters:
buf - the data to be written
off - the start offset of the data
len - the length of the data
Throws: IOException
if an I/O error has occurred
Overrides:
write in class FilterOutputStream 
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