public class XZCompressorOutputStream extends CompressorOutputStream
Constructor and Description |
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XZCompressorOutputStream(OutputStream outputStream)
Creates a new XZ compressor using the default LZMA2 options.
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XZCompressorOutputStream(OutputStream outputStream,
int preset)
Creates a new XZ compressor using the specified LZMA2 preset level.
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Modifier and Type | Method and Description |
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void |
close() |
void |
finish()
Finishes compression without closing the underlying stream.
|
void |
flush()
Flushes the encoder and calls
outputStream.flush() . |
void |
write(byte[] buf,
int off,
int len) |
void |
write(int b) |
write
public XZCompressorOutputStream(OutputStream outputStream) throws IOException
XZCompressorOutputStream(outputStream, 6)
.outputStream
- the stream to wrapIOException
- on errorpublic XZCompressorOutputStream(OutputStream outputStream, int preset) throws IOException
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.
outputStream
- the stream to wrappreset
- the presetIOException
- on errorpublic void write(int b) throws IOException
write
in class OutputStream
IOException
public void write(byte[] buf, int off, int len) throws IOException
write
in class OutputStream
IOException
public void flush() throws IOException
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.flush
in interface Flushable
flush
in class OutputStream
IOException
public void finish() throws IOException
IOException
public void close() throws IOException
close
in interface Closeable
close
in interface AutoCloseable
close
in class OutputStream
IOException
Copyright © 2015 The Apache Software Foundation. All rights reserved.