public DeflaterOutputStream(OutputStream out) 
{
        this(out, false);
        usesDefaultDeflater = true;
}

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

 public DeflaterOutputStream(OutputStream out,
    Deflater def) 
{
        this(out, def, 512, false);
}

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")

 public DeflaterOutputStream(OutputStream out,
    boolean syncFlush) 
{
        this(out, new Deflater(), 512, syncFlush);
        usesDefaultDeflater = true;
}

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 {@code 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 -

 public DeflaterOutputStream(OutputStream out,
    Deflater def,
    int size) 
{
        this(out, def, size, false);
}

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

exception: IllegalArgumentException - if size is <= 0

 public DeflaterOutputStream(OutputStream out,
    Deflater def,
    boolean syncFlush) 
{
        this(out, def, 512, 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 {@code 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 -

 public DeflaterOutputStream(OutputStream out,
    Deflater def,
    int size,
    boolean syncFlush) 
{
        super(out);
        if (out == null || def == null) {
            throw new NullPointerException();
        } else if (size < = 0) {
            throw new IllegalArgumentException("buffer size < = 0");
        }
        this.def = def;
        this.buf = new byte[size];
        this.syncFlush = 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 {@code 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 -

 public  void close() throws IOException 
{
        if (!closed) {
            finish();
            if (usesDefaultDeflater)
                def.end();
            out.close();
            closed = true;
        }
}

Writes remaining compressed data to the output stream and closes the underlying stream.

 protected  void deflate() throws IOException 
{
        int len = def.deflate(buf, 0, buf.length);
        if (len  > 0) {
            out.write(buf, 0, len);
        }
}

Writes next block of compressed data to the output stream.

 public  void finish() throws IOException 
{
        if (!def.finished()) {
            def.finish();
            while (!def.finished()) {
                deflate();
            }
        }
}

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.

 public  void flush() throws IOException 
{
        if (syncFlush && !def.finished()) {
            int len = 0;
            while ((len = def.deflate(buf, 0, buf.length, Deflater.SYNC_FLUSH))  > 0)
            {
                out.write(buf, 0, len);
                if (len <  buf.length)
                    break;
            }
        }
        out.flush();
}

Flushes the compressed output stream. If Deflater, int, boolean) syncFlush is {@code true} when this compressed output stream is constructed, this method first flushes the underlying {@code 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 {@code compressor}.

 public  void write(int b) throws IOException 
{
        byte[] buf = new byte[1];
        buf[0] = (byte)(b & 0xff);
        write(buf, 0, 1);
}

Writes a byte to the compressed output stream. This method will block until the byte can be written.

 public  void write(byte[] b,
    int off,
    int len) throws IOException 
{
        if (def.finished()) {
            throw new IOException("write beyond end of stream");
        }
        if ((off | len | (off + len) | (b.length - (off + len))) <  0) {
            throw new IndexOutOfBoundsException();
        } else if (len == 0) {
            return;
        }
        if (!def.finished()) {
            def.setInput(b, off, len);
            while (!def.needsInput()) {
                deflate();
            }
        }
}

Writes an array of bytes to the compressed output stream. This method will block until all the bytes are written.