Package org.apache.commons.compress.compressors.gzip

Class GzipCompressorOutputStream

java.lang.Object

java.io.OutputStream

org.apache.commons.compress.compressors.CompressorOutputStream

org.apache.commons.compress.compressors.gzip.GzipCompressorOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class GzipCompressorOutputStream
extends CompressorOutputStream

Compressed output stream using the gzip format. This implementation improves over the standard GZIPOutputStream class by allowing the configuration of the compression level and the header metadata (file name, comment, modification time, operating system and extra flags).

See Also:

• GZIP File Format Specification

Constructor Summary

Constructors

Constructor	Description
GzipCompressorOutputStream(OutputStream out)	Creates a gzip compressed output stream with the default parameters.
GzipCompressorOutputStream(OutputStream out, GzipParameters parameters)	Creates a gzip compressed output stream with the specified parameters.

Method Summary

Modifier and Type	Method	Description
void	close()
void	finish()	Finishes writing compressed data to the underlying stream without closing it.
void	flush()
void	write(byte[] buffer)
void	write(byte[] buffer, int offset, int length)
void	write(int b)

Methods inherited from class java.io.OutputStream

nullOutputStream

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

GzipCompressorOutputStream

public GzipCompressorOutputStream(OutputStream out)
                           throws IOException

Creates a gzip compressed output stream with the default parameters.

Parameters:

out - the stream to compress to

Throws:

IOException - if writing fails

GzipCompressorOutputStream

public GzipCompressorOutputStream(OutputStream out,
 GzipParameters parameters)
                           throws IOException

Creates a gzip compressed output stream with the specified parameters.

Parameters:

out - the stream to compress to

parameters - the parameters to use

Throws:

IOException - if writing fails

Since:

1.7

Method Details

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class OutputStream

Throws:

IOException

finish

public void finish()
            throws IOException

Finishes writing compressed data to the underlying stream without closing it.

Throws:

IOException - on error

Since:

1.7

flush

public void flush()
           throws IOException

Specified by:

flush in interface Flushable

Overrides:

flush in class OutputStream

Throws:

IOException

Since:

1.7

write

public void write(byte[] buffer)
           throws IOException

Overrides:

write in class OutputStream

Throws:

IOException

Since:

1.1

write

public void write(byte[] buffer,
 int offset,
 int length)
           throws IOException

Overrides:

write in class OutputStream

Throws:

IOException

Since:

1.1

write

public void write(int b)
           throws IOException

Specified by:

write in class OutputStream

Throws:

IOException