Java compact1, compact2, compact3 java.util.zip Class GZIPInputStream（JDK8）

Field Detail

• crc

  protected CRC32 crc

  CRC-32 for uncompressed data.

• eos

  protected boolean eos

  Indicates end of input stream.

• GZIP_MAGIC

  public static final int GZIP_MAGIC

  GZIP header magic number.

  See Also:

  Constant Field Values

Constructor Detail

• 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:

  ZipException - if a GZIP format error has occurred or the compression method used is unsupported

  IOException - if an I/O error has occurred

  IllegalArgumentException - if size <= 0

• GZIPInputStream

  public GZIPInputStream(InputStream in)
                  throws IOException

  Creates a new input stream with a default buffer size.

  Parameters:

  in - the input stream

  Throws:

  ZipException - if a GZIP format error has occurred or the compression method used is unsupported

  IOException - if an I/O error has occurred

Method Detail

• read

  public int read(byte[] buf,
                  int off,
                  int len)
           throws IOException

  Reads uncompressed data into an array of bytes. If len is not zero, the method will block until some input can be decompressed; otherwise, no bytes are read and 0 is returned.

  Overrides:

  read in class InflaterInputStream

  Parameters:

  buf - the buffer into which the data is read

  off - the start offset in the destination array b

  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:

  NullPointerException - If buf is null.

  IndexOutOfBoundsException - If off is negative, len is negative, or len is greater than buf.length - off

  ZipException - if the compressed input data is corrupt.

  IOException - if an I/O error has occurred.

  See Also:

  FilterInputStream.in

• close

  public void close()
             throws IOException

  Closes this input stream and releases any system resources associated with the stream.

  Specified by:

  close in interface Closeable

  Specified by:

  close in interface AutoCloseable

  Overrides:

  close in class InflaterInputStream

  Throws:

  IOException - if an I/O error has occurred

  See Also:

  FilterInputStream.in