public class DeflaterOutputStream extends FilterOutputStream
Modifier and Type | Field and Description |
---|---|
protected byte[] |
buffer |
protected static int |
DEFAULT_BUFSIZE |
protected Deflater |
deflater |
protected boolean |
mydeflater |
out
Constructor and Description |
---|
DeflaterOutputStream(OutputStream out) |
DeflaterOutputStream(OutputStream out,
Deflater def) |
DeflaterOutputStream(OutputStream out,
Deflater deflater,
int size) |
DeflaterOutputStream(OutputStream out,
Deflater deflater,
int size,
boolean close_out) |
Modifier and Type | Method and Description |
---|---|
void |
close()
Closes this output stream and releases any system resources
associated with this stream.
|
protected int |
deflate(int flush) |
void |
finish() |
void |
flush()
Flushes this output stream and forces any buffered output bytes
to be written out.
|
Deflater |
getDeflater() |
boolean |
getSyncFlush() |
long |
getTotalIn() |
long |
getTotalOut() |
void |
setSyncFlush(boolean syncFlush) |
void |
write(byte[] b,
int off,
int len)
Writes
len bytes from the specified byte array
starting at offset off to this output stream. |
void |
write(int b)
Writes the specified byte to this output stream.
|
write
protected final Deflater deflater
protected byte[] buffer
protected boolean mydeflater
protected static final int DEFAULT_BUFSIZE
public DeflaterOutputStream(OutputStream out) throws IOException
IOException
public DeflaterOutputStream(OutputStream out, Deflater def) throws IOException
IOException
public DeflaterOutputStream(OutputStream out, Deflater deflater, int size) throws IOException
IOException
public DeflaterOutputStream(OutputStream out, Deflater deflater, int size, boolean close_out) throws IOException
IOException
public void write(int b) throws IOException
OutputStream
write
is that one byte is written
to the output stream. The byte to be written is the eight
low-order bits of the argument b
. The 24
high-order bits of b
are ignored.
Subclasses of OutputStream
must provide an
implementation for this method.
write
in class FilterOutputStream
b
- the byte
.IOException
- if an I/O error occurs. In particular,
an IOException
may be thrown if the
output stream has been closed.public void write(byte[] b, int off, int len) throws IOException
OutputStream
len
bytes from the specified byte array
starting at offset off
to this output stream.
The general contract for write(b, off, len)
is that
some of the bytes in the array b
are written to the
output stream in order; element b[off]
is the first
byte written and b[off+len-1]
is the last byte written
by this operation.
The write
method of OutputStream
calls
the write method of one argument on each of the bytes to be
written out. Subclasses are encouraged to override this method and
provide a more efficient implementation.
If b
is null
, a
NullPointerException
is thrown.
If off
is negative, or len
is negative, or
off+len
is greater than the length of the array
b
, then an IndexOutOfBoundsException is thrown.
write
in class FilterOutputStream
b
- the data.off
- the start offset in the data.len
- the number of bytes to write.IOException
- if an I/O error occurs. In particular,
an IOException
is thrown if the output
stream is closed.public void finish() throws IOException
IOException
public void close() throws IOException
OutputStream
close
is that it closes the output stream. A closed stream cannot perform
output operations and cannot be reopened.
The close
method of OutputStream
does nothing.
close
in interface Closeable
close
in interface AutoCloseable
close
in class FilterOutputStream
IOException
- if an I/O error occurs.protected int deflate(int flush) throws IOException
IOException
public void flush() throws IOException
OutputStream
flush
is
that calling it is an indication that, if any bytes previously
written have been buffered by the implementation of the output
stream, such bytes should immediately be written to their
intended destination.
If the intended destination of this stream is an abstraction provided by the underlying operating system, for example a file, then flushing the stream guarantees only that bytes previously written to the stream are passed to the operating system for writing; it does not guarantee that they are actually written to a physical device such as a disk drive.
The flush
method of OutputStream
does nothing.
flush
in interface Flushable
flush
in class FilterOutputStream
IOException
- if an I/O error occurs.public long getTotalIn()
public long getTotalOut()
public void setSyncFlush(boolean syncFlush)
public boolean getSyncFlush()
public Deflater getDeflater()