Class java.util.zip.GZIPOutputStream
java.lang.Object
|
+--java.io.OutputStream
|
+--java.io.FilterOutputStream
|
+--java.util.zip.DeflaterOutputStream
|
+--java.util.zip.GZIPOutputStream
- public class GZIPOutputStream
- extends DeflaterOutputStream
This class implements a stream filter for writing compressed data in
the GZIP file format.
Field Summary
|
protected CRC32
|
crc
CRC-32 of uncompressed data. |
Method Summary
|
void
|
close()
Writes remaining compressed data to the output stream and closes the
underlying stream. |
void
|
finish()
Finishes writing compressed data to the output stream without closing
the underlying stream. |
void
|
write(byte[] buf,
int off,
int len)
Writes array of bytes to the compressed output stream. |
Methods inherited from class java.lang.Object |
clone
, equals
, finalize
, getClass
, hashCode
, notify
, notifyAll
, toString
, wait
, wait
, wait
|
crc
protected CRC32 crc
- CRC-32 of uncompressed data.
GZIPOutputStream
public GZIPOutputStream(OutputStream out,
int size)
throws IOException
- Creates a new output stream with the specified buffer size.
- Parameters:
out
- the output stream
size
- the output buffer size- Throws:
- IOException - If an I/O error has occurred.
GZIPOutputStream
public GZIPOutputStream(OutputStream out)
throws IOException
- Creates a new output stream with a default buffer size.
- Parameters:
out
- the output stream- Throws:
- IOException - If an I/O error has occurred.
write
public void write(byte[] buf,
int off,
int len)
throws IOException
- Writes 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 DeflaterOutputStream
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
- Overrides:
- finish in class DeflaterOutputStream
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 DeflaterOutputStream
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