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Java™ Platform Standard Ed. 6 |
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java.lang.Objectjava.io.InputStream
java.io.FilterInputStream
java.util.zip.DeflaterInputStream
public class DeflaterInputStream
Implements an input stream filter for compressing data in the "deflate" compression format.
DeflaterOutputStream,
InflaterOutputStream,
InflaterInputStream| Field Summary | |
|---|---|
protected byte[] |
buf
Input buffer for reading compressed data. |
protected Deflater |
def
Compressor for this stream. |
| Fields inherited from class java.io.FilterInputStream |
|---|
in |
| Constructor Summary | |
|---|---|
DeflaterInputStream(InputStream in)
Creates a new input stream with a default compressor and buffer size. |
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DeflaterInputStream(InputStream in,
Deflater defl)
Creates a new input stream with the specified compressor and a default buffer size. |
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DeflaterInputStream(InputStream in,
Deflater defl,
int bufLen)
Creates a new input stream with the specified compressor and buffer size. |
|
| Method Summary | |
|---|---|
int |
available()
Returns 0 after EOF has been reached, otherwise always return 1. |
void |
close()
Closes this input stream and its underlying input stream, discarding any pending uncompressed data. |
void |
mark(int limit)
This operation is not supported. |
boolean |
markSupported()
Always returns false because this input stream does not support
the mark() and reset() methods. |
int |
read()
Reads a single byte of compressed data from the input stream. |
int |
read(byte[] b,
int off,
int len)
Reads compressed data into a byte array. |
void |
reset()
This operation is not supported. |
long |
skip(long n)
Skips over and discards data from the input stream. |
| Methods inherited from class java.io.FilterInputStream |
|---|
read |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
protected final Deflater def
protected final byte[] buf
| Constructor Detail |
|---|
public DeflaterInputStream(InputStream in)
in - input stream to read the uncompressed data to
NullPointerException - if in is null
public DeflaterInputStream(InputStream in,
Deflater defl)
in - input stream to read the uncompressed data todefl - compressor ("deflater") for this stream
NullPointerException - if in or defl is null
public DeflaterInputStream(InputStream in,
Deflater defl,
int bufLen)
in - input stream to read the uncompressed data todefl - compressor ("deflater") for this streambufLen - compression buffer size
IllegalArgumentException - if bufLen is <= 0
NullPointerException - if in or defl is null| Method Detail |
|---|
public void close()
throws IOException
close in interface Closeableclose in class FilterInputStreamIOException - if an I/O error occursFilterInputStream.in
public int read()
throws IOException
read in class FilterInputStreamIOException - if an I/O error occurs or if this stream is
already closedFilterInputStream.in
public int read(byte[] b,
int off,
int len)
throws IOException
read in class FilterInputStreamb - buffer into which the data is readoff - starting offset of the data within blen - maximum number of compressed bytes to read into b
IndexOutOfBoundsException - if len > b.length -
off
IOException - if an I/O error occurs or if this input stream is
already closedFilterInputStream.in
public long skip(long n)
throws IOException
n is given as a long,
the maximum number of bytes which can be skipped is
Integer.MAX_VALUE.
skip in class FilterInputStreamn - number of bytes to be skipped
IOException - if an I/O error occurs or if this stream is
already closed
public int available()
throws IOException
Programs should not count on this method to return the actual number of bytes that could be read without blocking
available in class FilterInputStreamIOException - if an I/O error occurs or if this stream is
already closedpublic boolean markSupported()
false because this input stream does not support
the mark() and reset() methods.
markSupported in class FilterInputStreamFilterInputStream.in,
InputStream.mark(int),
InputStream.reset()public void mark(int limit)
mark in class FilterInputStreamlimit - maximum bytes that can be read before invalidating the position markerFilterInputStream.in,
FilterInputStream.reset()
public void reset()
throws IOException
reset in class FilterInputStreamIOException - always thrownFilterInputStream.in,
FilterInputStream.mark(int)
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Java™ Platform Standard Ed. 6 |
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Copyright 2006 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.