java.util.zip
Class GZIPInputStream

java.lang.Object
  java.io.InputStream
      java.io.FilterInputStream
          java.util.zip.InflaterInputStream
              java.util.zip.GZIPInputStream

All Implemented Interfaces:

Closeable

public class GZIPInputStream
extends InflaterInputStream

The GZIPInputStream class is used to read data stored in the GZIP format.

Field Summary

protected CRC32	crc
protected boolean	eos
static int	GZIP_MAGIC

Fields inherited from class java.util.zip.InflaterInputStream

buf, BUF_SIZE, closed, eof, inf, len, nativeEndBufSize

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

GZIPInputStream(InputStream is)
Construct a GZIPInputStream to read from GZIP data from the underlying stream

GZIPInputStream(InputStream is, int size)
Construct a GZIPInputStream to read from GZIP data from the underlying stream.

Method Summary

void	close() Closes this stream and any underlying streams.
int	read(byte[] buffer, int off, int nbytes) Reads and decompresses GZIP data from the underlying stream into buf.

Methods inherited from class java.util.zip.InflaterInputStream

available, fill, mark, markSupported, read, reset, skip

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

crc

protected CRC32 crc

eos

protected boolean eos

GZIP_MAGIC

public static final int GZIP_MAGIC

See Also:

Constant Field Values

Constructor Detail

GZIPInputStream

public GZIPInputStream(InputStream is)
                throws IOException

Construct a GZIPInputStream to read from GZIP data from the underlying stream

Parameters:

is - InputStream to read data from

Throws:

IOException

GZIPInputStream

public GZIPInputStream(InputStream is,
                       int size)
                throws IOException

Construct a GZIPInputStream to read from GZIP data from the underlying stream. Set the internal buffer size to size

Parameters:

is - InputStream to read data from

size - Internal read buffer size

Throws:

IOException

Method Detail

read

public int read(byte[] buffer,
                int off,
                int nbytes)
         throws IOException

Reads and decompresses GZIP data from the underlying stream into buf.

Overrides:

read in class InflaterInputStream

Parameters:

buffer - Buffer to receive data

off - Offset in buffer to store data

nbytes - Number of bytes to read

Returns:

Number of uncompressed bytes read

Throws:

IOException - If an error occurs reading

close

public void close()
           throws IOException

Closes this stream and any underlying streams.

Specified by:

close in interface Closeable

Overrides:

close in class InflaterInputStream

Throws:

IOException - If an error occurs closing the stream