All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class GZIPOutputStream
extends DeflaterOutputStream 

• Field Summary

  Fields

  Modifier and Type	Field	Description
  protected CRC32	crc	CRC-32 of uncompressed data.

  • Fields inherited from class java.util.zip.DeflaterOutputStream

    buf, def

  • Fields inherited from class java.io.FilterOutputStream

    out

• Constructor Summary

  Constructors

  Constructor	Description
  GZIPOutputStream (OutputStream out)	Creates a new output stream with a default buffer size.
  GZIPOutputStream (OutputStream out, boolean syncFlush)	Creates a new output stream with a default buffer size and the specified flush mode.
  GZIPOutputStream (OutputStream out, int size)	Creates a new output stream with the specified buffer size.
  GZIPOutputStream (OutputStream out, int size, boolean syncFlush)	Creates a new output stream with the specified buffer size and flush mode.

• Method Summary

  All Methods

  Modifier and Type	Method	Description
  void	finish ()	Finishes writing compressed data to the output stream without closing the underlying stream.
  void	write (byte[] buf, int off, int len)	Writes array of bytes to the compressed output stream.

  • Methods inherited from class java.util.zip.DeflaterOutputStream

    close, deflate, flush, write

  • Methods inherited from class java.io.FilterOutputStream

    write

  • Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

• 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 <= 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 <= 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