public class DeflaterOutputStream extends FilterOutputStream
Deflater
Modifier and Type | Field and Description |
---|---|
protected byte[] |
buf
Output buffer for writing compressed data.
|
protected Deflater |
def
Compressor for this stream.
|
out
Constructor and Description |
---|
DeflaterOutputStream(OutputStream out)
Creates a new output stream with a default compressor and buffer size.
|
DeflaterOutputStream(OutputStream out,
boolean syncFlush)
Creates a new output stream with a default compressor, a default
buffer size and the specified flush mode.
|
DeflaterOutputStream(OutputStream out,
Deflater def)
Creates a new output stream with the specified compressor and
a default buffer size.
|
DeflaterOutputStream(OutputStream out,
Deflater def,
boolean syncFlush)
Creates a new output stream with the specified compressor, flush
mode and a default buffer size.
|
DeflaterOutputStream(OutputStream out,
Deflater def,
int size)
Creates a new output stream with the specified compressor and
buffer size.
|
DeflaterOutputStream(OutputStream out,
Deflater def,
int size,
boolean syncFlush)
Creates a new output stream with the specified compressor,
buffer size and flush mode.
|
Modifier and Type | Method and Description |
---|---|
void |
close()
Writes remaining compressed data to the output stream and closes the
underlying stream.
|
protected void |
deflate()
Writes next block of compressed data to the output stream.
|
void |
finish()
Finishes writing compressed data to the output stream without closing
the underlying stream.
|
void |
flush()
Flushes the compressed output stream.
|
void |
write(byte[] b,
int off,
int len)
Writes an array of bytes to the compressed output stream.
|
void |
write(int b)
Writes a byte to the compressed output stream.
|
write
protected Deflater def
protected byte[] buf
public DeflaterOutputStream(OutputStream out, Deflater def, int size, boolean syncFlush)
out
- the output streamdef
- the compressor ("deflater")size
- the output buffer sizesyncFlush
- if true
the flush()
method of this
instance flushes the compressor with flush mode
Deflater.SYNC_FLUSH
before flushing the output
stream, otherwise only flushes the output streamIllegalArgumentException
- if size <= 0
public DeflaterOutputStream(OutputStream out, Deflater def, int size)
The new output stream instance is created as if by invoking the 4-argument constructor DeflaterOutputStream(out, def, size, false).
out
- the output streamdef
- the compressor ("deflater")size
- the output buffer sizeIllegalArgumentException
- if size <= 0
public DeflaterOutputStream(OutputStream out, Deflater def, boolean syncFlush)
out
- the output streamdef
- the compressor ("deflater")syncFlush
- if true
the flush()
method of this
instance flushes the compressor with flush mode
Deflater.SYNC_FLUSH
before flushing the output
stream, otherwise only flushes the output streampublic DeflaterOutputStream(OutputStream out, Deflater def)
The new output stream instance is created as if by invoking the 3-argument constructor DeflaterOutputStream(out, def, false).
out
- the output streamdef
- the compressor ("deflater")public DeflaterOutputStream(OutputStream out, boolean syncFlush)
out
- the output streamsyncFlush
- if true
the flush()
method of this
instance flushes the compressor with flush mode
Deflater.SYNC_FLUSH
before flushing the output
stream, otherwise only flushes the output streampublic DeflaterOutputStream(OutputStream out)
The new output stream instance is created as if by invoking the 2-argument constructor DeflaterOutputStream(out, false).
out
- the output streampublic void write(int b) throws IOException
write
in class FilterOutputStream
b
- the byte to be writtenIOException
- if an I/O error has occurredpublic void write(byte[] b, int off, int len) throws IOException
write
in class FilterOutputStream
b
- the data to be writtenoff
- the start offset of the datalen
- the length of the dataIOException
- if an I/O error has occurredFilterOutputStream.write(int)
public void finish() throws IOException
IOException
- if an I/O error has occurredpublic void close() throws IOException
close
in interface Closeable
close
in interface AutoCloseable
close
in class FilterOutputStream
IOException
- if an I/O error has occurredFilterOutputStream.flush()
,
FilterOutputStream.out
protected void deflate() throws IOException
IOException
- if an I/O error has occurredpublic void flush() throws IOException
syncFlush
is true
when this compressed output stream is
constructed, this method first flushes the underlying compressor
with the flush mode Deflater.SYNC_FLUSH
to force
all pending data to be flushed out to the output stream and then
flushes the output stream. Otherwise this method only flushes the
output stream without flushing the compressor
.flush
in interface Flushable
flush
in class FilterOutputStream
IOException
- if an I/O error has occurredFilterOutputStream.out
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