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

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

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

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

inf

 protected Inflater inf

Decompressor for this stream.

buf

 protected byte buf[]

Input buffer for decompression.

len

 protected int len

Length of input buffer.

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

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")

InflaterInputStream

 public InflaterInputStream(InputStream in)

Creates a new input stream with a default decompressor and buffer size.

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

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

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

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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