Module java.base
Package java.util.zip

Class GZIPInputStream

    • 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