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Class java.util.zip.InflaterInputStream - JDK 5 Documentation v1.1.8, Java 2 SDK 英文文档

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Class java.util.zip.InflaterInputStream

java.lang.Object
   |
   +----java.io.InputStream
           |
           +----java.io.FilterInputStream
                   |
                   +----java.util.zip.InflaterInputStream

public class InflaterInputStream
extends FilterInputStream
This class implements a stream filter for uncompressing data in the "deflate" compression format. It is also used as the basis for other decompression filters, such as GZIPInputStream.

See Also:
Inflater

Variable Index

 o buf
Input buffer for decompression.
 o inf
Decompressor for this stream.
 o len
Length of input buffer.

Constructor Index

 o InflaterInputStream(InputStream)
Creates a new input stream with a default decompressor and buffer size.
 o InflaterInputStream(InputStream, Inflater)
Creates a new input stream with the specified decompressor and a default buffer size.
 o InflaterInputStream(InputStream, Inflater, int)
Creates a new input stream with the specified decompressor and buffer size.

Method Index

 o fill()
Fills input buffer with more data to decompress.
 o read()
Reads a byte of uncompressed data.
 o read(byte[], int, int)
Reads uncompressed data into an array of bytes.
 o skip(long)
Skips specified number of bytes of uncompressed data.

Variables

 o inf
 protected Inflater inf
Decompressor for this stream.

 o buf
 protected byte buf[]
Input buffer for decompression.

 o len
 protected int len
Length of input buffer.

Constructors

 o InflaterInputStream
 public InflaterInputStream(InputStream in,
                            Inflater inf,
                            int size)
Creates a new input stream with the specified decompressor and buffer size.

Parameters:
in - the input stream
inf - the decompressor ("inflater")
size - the input buffer size
 o InflaterInputStream
 public InflaterInputStream(InputStream in,
                            Inflater inf)
Creates a new input stream with the specified decompressor and a default buffer size.

Parameters:
in - the input stream
inf - the decompressor ("inflater")
 o InflaterInputStream
 public InflaterInputStream(InputStream in)
Creates a new input stream with a default decompressor and buffer size.

Methods

 o read
 public int read() throws IOException
Reads a byte of uncompressed data. This method will block until enough input is available for decompression.

Returns:
the byte read, or -1 if end of compressed input is reached
Throws: IOException
if an I/O error has occurred
Overrides:
read in class FilterInputStream
 o read
 public int read(byte b[],
                 int off,
                 int len) throws IOException
Reads uncompressed data into an array of bytes. This method will block until some input can be decompressed.

Parameters:
b - 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 is reached or a preset dictionary is needed
Throws: ZipException
if a ZIP format error has occurred
Throws: IOException
if an I/O error has occurred
Overrides:
read in class FilterInputStream
 o skip
 public long skip(long n) throws IOException
Skips specified number of bytes of uncompressed data.

Parameters:
n - the number of bytes to skip
Returns:
the actual number of bytes skipped.
Throws: IOException
if an I/O error has occurred
Overrides:
skip in class FilterInputStream
 o fill
 protected void fill() throws IOException
Fills input buffer with more data to decompress.

Throws: IOException
if an I/O error has occurred

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