Class java.util.zip.GZIPInputStream
All Packages  Class Hierarchy  This Package  Previous  Next  Index

Class java.util.zip.GZIPInputStream

Object
   |
   +----InputStream
           |
           +----FilterInputStream
                   |
                   +----InflaterInputStream
                           |
                           +----java.util.zip.GZIPInputStream

public class GZIPInputStream
extends InflaterInputStream
This class implements a stream filter for reading compressed data in the GZIP format.

Version:
1.15, 01/20/97
Author:
David Connelly
See Also:
InflaterInputStream

Variable Index

 o GZIP_MAGIC
GZIP header magic number.
 o crc
CRC-32 for uncompressed data.
 o eos
Indicates end of input stream.

Constructor Index

 o java.util.zip.GZIPInputStream(InputStream, int)
Creates a new input stream with the specified buffer size.
 o java.util.zip.GZIPInputStream(InputStream)
Creates a new input stream with a default buffer size.

Method Index

 o close()
Closes the input stream.
 o read(byte[], int, int)
Reads uncompressed data into an array of bytes.

Variables

 o GZIP_MAGIC
public static final int GZIP_MAGIC
GZIP header magic number.

 o crc
protected java.util.zip.CRC32 crc
CRC-32 for uncompressed data.

 o eos
protected boolean eos
Indicates end of input stream.

Constructors

 o GZIPInputStream
public GZIPInputStream(InputStream in,
                       int size) throws IOException
Creates a new input stream with the specified buffer size.

Parameters:
in - the input stream
size - the input buffer size
Throws: IOException
if an I/O error has occurred
 o GZIPInputStream
public GZIPInputStream(InputStream in) throws IOException
Creates a new input stream with a default buffer size.

Parameters:
in - the input stream
Throws: IOException
if an I/O error has occurred

Methods

 o close
public void close() throws IOException
Closes the input stream.

Throws: IOException
if an I/O error has occurred
Overrides:
close in class FilterInputStream
 o read
public int read(byte buf,
                int off,
                int len) throws IOException
Reads uncompressed data into an array of bytes. Blocks until enough input is available for decompression.

Parameters:
buf - the buffer into which the data is read
off - the start offset of the data
len - the maximum number of bytes read
Returns:
the actual number of bytes read, or -1 if the end of the compressed input stream is reached
Throws: IOException
if an I/O error has occurred or the compressed input data is corrupt
Overrides:
read in class InflaterInputStream

All Packages  Class Hierarchy  This Package  Previous  Next  Index