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java.lang.Objectjava.io.OutputStream
java.io.FilterOutputStream
java.util.zip.DeflaterOutputStream
public class DeflaterOutputStream
This is a special FilterOutputStream deflating the bytes that are written through it. It uses the Deflater for deflating. A special thing to be noted is that flush() doesn't flush everything in Sun's JDK, but it does so in jazzlib. This is because Sun's Deflater doesn't have a way to flush() everything, without finishing the stream.
| Field Summary | |
|---|---|
protected byte[] |
buf
This buffer is used temporarily to retrieve the bytes from the deflater and write them to the underlying output stream. |
protected Deflater |
def
The deflater which is used to deflate the stream. |
| Fields inherited from class java.io.FilterOutputStream |
|---|
out |
| Constructor Summary | |
|---|---|
DeflaterOutputStream(OutputStream out)
Creates a new DeflaterOutputStream with a default Deflater and default buffer size. |
|
DeflaterOutputStream(OutputStream out,
Deflater defl)
Creates a new DeflaterOutputStream with the given Deflater and default buffer size. |
|
DeflaterOutputStream(OutputStream out,
Deflater defl,
int bufsize)
Creates a new DeflaterOutputStream with the given Deflater and buffer size. |
|
| Method Summary | |
|---|---|
void |
close()
Calls finish() and closes the stream. |
protected void |
deflate()
Deflates everything in the def's input buffers. |
void |
finish()
Finishes the stream by calling finish() on the deflater. |
void |
flush()
Flushes the stream by calling flush() on the deflater and then on the underlying stream. |
void |
write(byte[] buf,
int off,
int len)
Writes a len bytes from an array to the compressed stream. |
void |
write(int bval)
Writes a single byte to the compressed output stream. |
| Methods inherited from class java.io.FilterOutputStream |
|---|
write |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
protected byte[] buf
protected Deflater def
| Constructor Detail |
|---|
public DeflaterOutputStream(OutputStream out)
out - the output stream where deflated output should be written.
public DeflaterOutputStream(OutputStream out,
Deflater defl)
out - the output stream where deflated output should be written.defl - the underlying deflater.
public DeflaterOutputStream(OutputStream out,
Deflater defl,
int bufsize)
out - the output stream where deflated output should be written.defl - the underlying deflater.bufsize - the buffer size.
IllegalArgumentException - if bufsize isn't positive.| Method Detail |
|---|
protected void deflate()
throws IOException
def.deflate() until all bytes from the input buffers
are processed.
IOException
public void flush()
throws IOException
flush in interface Flushableflush in class FilterOutputStreamIOException - If an error occurs
public void finish()
throws IOException
IOException
public void close()
throws IOException
close in interface Closeableclose in class FilterOutputStreamIOException - If an error occurs
public void write(int bval)
throws IOException
write in class FilterOutputStreambval - the byte value.
IOException - If an error occurs
public void write(byte[] buf,
int off,
int len)
throws IOException
write in class FilterOutputStreambuf - the byte array.off - the offset into the byte array where to start.len - the number of bytes to write.
IOException - If an error occurs
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