Class java.util.zip.DeflaterOutputStream





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Class java.util.zip.DeflaterOutputStream


java.lang.Object
|
+----java.io.OutputStream
|
+----java.io.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.


See Also:
Deflater








buf
Output buffer for writing compressed data.

def
Compressor for this stream.






DeflaterOutputStream(OutputStream)
Creates a new output stream with a defaul compressor and buffer size.

DeflaterOutputStream(OutputStream, Deflater)
Creates a new output stream with the specified compressor and
a default buffer size.

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






close()
Writes remaining compressed data to the output stream and closes the
underlying stream.

deflate()
Writes next block of compressed data to the output stream.

finish()
Finishes writing compressed data to the output stream without closing
the underlying stream.

write(byte[], int, int)
Writes an array of bytes to the compressed output stream.

write(int)
Writes a byte to the compressed output stream.






def

protected Deflater def


Compressor for this stream.


buf

protected byte buf[]


Output buffer for writing compressed data.







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



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")



DeflaterOutputStream

public DeflaterOutputStream(OutputStream out)


Creates a new output stream with a defaul compressor and buffer size.







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



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



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



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



deflate

protected void deflate() throws IOException


Writes next block of compressed data to the output stream.




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