java.lang.Object
- java.io.OutputStream
- - java.io.FilterOutputStream
  - - java.util.zip.DeflaterOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

Direct Known Subclasses:

GZIPOutputStream, ZipOutputStream
```
public class DeflaterOutputStream
extends FilterOutputStream
```
This class implements an output stream filter for compressing data in the "deflate" compression format. It is also used as the basis for other types of compression filters, such as GZIPOutputStream.

See Also:
Deflater

Field Summary
Fields
Modifier and Type Field and Description

protected byte[] buf
Output buffer for writing compressed data.

protected Deflater def
Compressor for this stream.

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- Fields inherited from class java.io.FilterOutputStream out

Constructor Summary

Constructors
Constructor and Description
`DeflaterOutputStream(OutputStream out)` Creates a new output stream with a default compressor and buffer size.
`DeflaterOutputStream(OutputStream out, boolean syncFlush)` Creates a new output stream with a default compressor, a default buffer size and the specified flush mode.
`DeflaterOutputStream(OutputStream out, Deflater def)` Creates a new output stream with the specified compressor and a default buffer size.
`DeflaterOutputStream(OutputStream out, Deflater def, boolean syncFlush)` Creates a new output stream with the specified compressor, flush mode and a default buffer size.
`DeflaterOutputStream(OutputStream out, Deflater def, int size)` Creates a new output stream with the specified compressor and buffer size.
`DeflaterOutputStream(OutputStream out, Deflater def, int size, boolean syncFlush)` Creates a new output stream with the specified compressor, buffer size and flush mode.

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Method Summary

Methods
Modifier and Type	Method and Description
`void`	`close()` Writes remaining compressed data to the output stream and closes the underlying stream.
`protected void`	`deflate()` Writes next block of compressed data to the output stream.
`void`	`finish()` Finishes writing compressed data to the output stream without closing the underlying stream.
`void`	`flush()` Flushes the compressed output stream.
`void`	`write(byte[] b, int off, int len)` Writes an array of bytes to the compressed output stream.
`void`	`write(int b)` Writes a byte to the compressed output stream.

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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
  - def
    protected Deflater def
    
    Compressor for this stream.
  - buf
    protected byte[] buf
    
    Output buffer for writing compressed data.
- Constructor Detail
  - DeflaterOutputStream
    public DeflaterOutputStream(OutputStream out, Deflater def, int size, boolean syncFlush)
    
    Creates a new output stream with the specified compressor, buffer size and flush mode.
    
    Parameters:
    out - the output stream
    def - the compressor ("deflater")
    size - the output buffer size
    syncFlush - if true the 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:
    
    IllegalArgumentException - if size is <= 0
    Since:
    
    1.7
  - DeflaterOutputStream
    public DeflaterOutputStream(OutputStream out, Deflater def, int size)
    
    Creates a new output stream with the specified compressor and buffer size.
    The new output stream instance is created as if by invoking the 4-argument constructor DeflaterOutputStream(out, def, size, false).
    
    Parameters:
    out - the output stream
    def - the compressor ("deflater")
    size - the output buffer size
    
    Throws:
    
    IllegalArgumentException - if size is <= 0
  - DeflaterOutputStream
    public DeflaterOutputStream(OutputStream out, Deflater def, boolean syncFlush)
    
    Creates a new output stream with the specified compressor, flush mode and a default buffer size.
    
    Parameters:
    out - the output stream
    def - the compressor ("deflater")
    syncFlush - if true the 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
    Since:
    
    1.7
  - DeflaterOutputStream
    public DeflaterOutputStream(OutputStream out, Deflater def)
    
    Creates a new output stream with the specified compressor and a default buffer size.
    The new output stream instance is created as if by invoking the 3-argument constructor DeflaterOutputStream(out, def, false).
    
    Parameters:
    out - the output stream
    def - the compressor ("deflater")
  - DeflaterOutputStream
    public DeflaterOutputStream(OutputStream out, boolean syncFlush)
    
    Creates a new output stream with a default compressor, a default buffer size and the specified flush mode.
    
    Parameters:
    out - the output stream
    syncFlush - if true the 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
    Since:
    
    1.7
  - DeflaterOutputStream
    public DeflaterOutputStream(OutputStream out)
    
    Creates a new output stream with a default compressor and buffer size.
    The new output stream instance is created as if by invoking the 2-argument constructor DeflaterOutputStream(out, false).
    
    Parameters:
    out - the output stream
- Method Detail
  - write
    public void write(int b) throws IOException
    
    Writes a byte to the compressed output stream. This method will block until the byte can be written.
    
    Overrides:
    
    write in class FilterOutputStream
    
    Parameters:
    b - the byte to be written
    
    Throws:
    
    IOException - if an I/O error has occurred
  - write
    public void write(byte[] b, int off, int len) throws IOException
    
    Writes an array of bytes to the compressed output stream. This method will block until all the bytes are written.
    
    Overrides:
    
    write in class FilterOutputStream
    
    Parameters:
    b - 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.
    
    Throws:
    
    IOException - if an I/O error has occurred
  - close
    public void close() throws IOException
    
    Writes remaining compressed data to the output stream and closes the underlying stream.
    
    Specified by:
    
    close in interface Closeable
    
    Specified by:
    
    close in interface AutoCloseable
    
    Overrides:
    
    close in class FilterOutputStream
    
    Throws:
    
    IOException - if an I/O error has occurred
    See Also:
    FilterOutputStream.flush(), FilterOutputStream.out
  - deflate
    protected void deflate() throws IOException
    
    Writes next block of compressed data to the output stream.
    
    Throws:
    
    IOException - if an I/O error has occurred
  - flush
    public void flush() throws IOException
    
    Flushes the compressed output stream. If syncFlush is true when this compressed output stream is constructed, this method first flushes the underlying compressor with the flush mode Deflater.SYNC_FLUSH to force all pending data to be flushed out to the output stream and then flushes the output stream. Otherwise this method only flushes the output stream without flushing the compressor.
    
    Specified by:
    
    flush in interface Flushable
    
    Overrides:
    
    flush in class FilterOutputStream
    
    Throws:
    
    IOException - if an I/O error has occurred
    Since:
    
    1.7
    
    See Also:
    FilterOutputStream.out

Deutsche Übersetzung

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Dokument erstellt 11/06/2005, zuletzt geändert 04/03/2020
Quelle des gedruckten Dokuments:https://www.gaudry.be/de/java-api-rf-java/util/zip/DeflaterOutputStream.html

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Referenzen

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Inhaltsverzeichnis Haut

Modifier and Type	Field and Description
`protected byte[]`	`buf` Output buffer for writing compressed data.
`protected Deflater`	`def` Compressor for this stream.

Class DeflaterOutputStream

Referenzen