Class XZCompressorOutputStream
java.lang.Object
java.io.OutputStream
java.io.FilterOutputStream
org.apache.commons.compress.compressors.CompressorOutputStream<org.tukaani.xz.XZOutputStream>
org.apache.commons.compress.compressors.xz.XZCompressorOutputStream
- All Implemented Interfaces:
Closeable
,Flushable
,AutoCloseable
XZ compressor.
Calling flush()
Calling FilterOutputStream.flush()
flushes the encoder and calls outputStream.flush()
. All buffered pending data will then be decompressible from the output
stream. Calling this function very often may increase the compressed file size a lot.
- Since:
- 1.4
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Field Summary
Fields inherited from class java.io.FilterOutputStream
out
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Constructor Summary
ConstructorDescriptionXZCompressorOutputStream
(OutputStream outputStream) Creates a new XZ compressor using the default LZMA2 options.XZCompressorOutputStream
(OutputStream outputStream, int preset) Creates a new XZ compressor using the specified LZMA2 preset level. -
Method Summary
Methods inherited from class org.apache.commons.compress.compressors.CompressorOutputStream
out
Methods inherited from class java.io.FilterOutputStream
close, flush, write, write
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Constructor Details
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XZCompressorOutputStream
Creates a new XZ compressor using the default LZMA2 options. This is equivalent toXZCompressorOutputStream(outputStream, 6)
.- Parameters:
outputStream
- the stream to wrap- Throws:
IOException
- on error
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XZCompressorOutputStream
Creates a new XZ compressor using the specified LZMA2 preset level.The presets 0-3 are fast presets with medium compression. The presets 4-6 are fairly slow presets with high compression. The default preset is 6.
The presets 7-9 are like the preset 6 but use bigger dictionaries and have higher compressor and decompressor memory requirements. Unless the uncompressed size of the file exceeds 8 MiB, 16 MiB, or 32 MiB, it is waste of memory to use the presets 7, 8, or 9, respectively.
- Parameters:
outputStream
- the stream to wrappreset
- the preset- Throws:
IOException
- on error
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Method Details
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finish
Finishes compression without closing the underlying stream. No more data can be written to this stream after finishing.- Throws:
IOException
- on error
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write
- Overrides:
write
in classFilterOutputStream
- Throws:
IOException
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