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java.util.zip

Class GZIPOutputStream

Contents
    • Field Detail
      • crc 
        protected CRC32 crc
        CRC-32 of uncompressed data.
    • Constructor Detail
      • GZIPOutputStream 
        public GZIPOutputStream(OutputStream out,
                int size)
                 throws IOException
        Creates a new output stream with the specified buffer size.

        The new output stream instance is created as if by invoking the 3-argument constructor GZIPOutputStream(out, size, false).

        Parameters:
        out - the output stream
        size - the output buffer size
        Throws:
        IOException - If an I/O error has occurred.
        IllegalArgumentException - if size is <= 0
      • GZIPOutputStream 
        public GZIPOutputStream(OutputStream out,
                int size,
                boolean syncFlush)
                 throws IOException
        Creates a new output stream with the specified buffer size and flush mode.
        Parameters:
        out - the output stream
        size - the output buffer size
        syncFlush - if true invocation of the inherited flush() method of this instance flushes the compressor with flush mode Deflater.SYNC_FLUSH before flushing the output stream, otherwise only flushes the output stream
        Throws:
        IOException - If an I/O error has occurred.
        IllegalArgumentException - if size is <= 0
        Since:
        1.7
      • GZIPOutputStream 
        public GZIPOutputStream(OutputStream out)
                 throws IOException
        Creates a new output stream with a default buffer size.

        The new output stream instance is created as if by invoking the 2-argument constructor GZIPOutputStream(out, false).

        Parameters:
        out - the output stream
        Throws:
        IOException - If an I/O error has occurred.
      • GZIPOutputStream 
        public GZIPOutputStream(OutputStream out,
                boolean syncFlush)
                 throws IOException
        Creates a new output stream with a default buffer size and the specified flush mode.
        Parameters:
        out - the output stream
        syncFlush - if true invocation of the inherited flush() method of this instance flushes the compressor with flush mode Deflater.SYNC_FLUSH before flushing the output stream, otherwise only flushes the output stream
        Throws:
        IOException - If an I/O error has occurred.
        Since:
        1.7
    • Method Detail
      • write 
        public void write(byte[] buf,
         int off,
         int len)
           throws IOException
        Writes array of bytes to the compressed output stream. This method will block until all the bytes are written.
        Overrides:
        write in class DeflaterOutputStream
        Parameters:
        buf - the data to be written
        off - the start offset of the data
        len - the length of the data
        Throws:
        IOException - If an I/O error has occurred.
        See Also:
        FilterOutputStream.write(int)
      • finish 
        public void finish()
            throws IOException
        Finishes writing compressed data to the output stream without closing the underlying stream. Use this method when applying multiple filters in succession to the same output stream.
        Overrides:
        finish in class DeflaterOutputStream
        Throws:
        IOException - if an I/O error has occurred
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