Class java.util.zip.DeflaterOutputStream
java.lang.Object
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+----java.io.OutputStream
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+----java.io.FilterOutputStream
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+----java.util.zip.DeflaterOutputStream
- Subclasses:
- GZIPOutputStream, ZipOutputStream
- 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
Field Summary
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byte[]
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buf
Output buffer for writing compressed data.
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Deflater
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def
Compressor for this stream.
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Method Summary
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void
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close()
Writes remaining compressed data to the output stream and closes the
underlying stream.
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void
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deflate()
Writes next block of compressed data to the output stream.
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void
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finish()
Finishes writing compressed data to the output stream without closing
the underlying stream.
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void
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write(int b)
Writes a byte to the compressed output stream.
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void
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write(byte[] b,
int off,
int len)
Writes an array of bytes to the compressed output stream.
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Methods inherited from class java.lang.Object
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
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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