This class
implements the general ZLIB data-compression algorithm used by the
gzip and PKZip compression
programs. The constants defined by this class are used to specify the
compression strategy and the compression speed/strength tradeoff
level to be used. If you set the nowrap
argument to the constructor to true, the ZLIB
header and checksum data are omitted from the compressed output,
which is the format both gzip and
PKZip use.The important methods of this class
are setInput( ), which specifies input data to be
compressed, and deflate( ), which compresses the
data and returns the compressed output. The remaining methods exist
so that Deflater can be used for stream-based
compression, as it is in higher-level classes, such as
GZIPOutputStream and
ZipOutputStream. These stream classes are
sufficient in most cases. Most applications do not need to use
Deflater directly. The Inflater
class uncompresses data compressed with a Deflater
object.public class Deflater {
// Public Constructors
public Deflater ( );
public Deflater (int level );
public Deflater (int level , boolean nowrap );
// Public Constants
public static final int BEST_COMPRESSION ; =9
public static final int BEST_SPEED ; =1
public static final int DEFAULT_COMPRESSION ; =-1
public static final int DEFAULT_STRATEGY ; =0
public static final int DEFLATED ; =8
public static final int FILTERED ; =1
public static final int HUFFMAN_ONLY ; =2
public static final int NO_COMPRESSION ; =0
// Public Instance Methods
public int deflate (byte[ ] b );
public int deflate (byte[ ] b , int off , int len ); synchronized
public void end ( ); synchronized
public void finish ( ); synchronized
public boolean finished ( ); synchronized
public int getAdler ( ); synchronized default:1
5.0 public long getBytesRead ( ); synchronized default:0
5.0 public long getBytesWritten ( ); synchronized default:0
public int getTotalIn ( ); default:0
public int getTotalOut ( ); default:0
public boolean needsInput ( );
public void reset ( ); synchronized
public void setDictionary (byte[ ] b );
public void setDictionary (byte[ ] b , int off , int len ); synchronized
public void setInput (byte[ ] b );
public void setInput (byte[ ] b , int off , int len ); synchronized
public void setLevel (int level ); synchronized
public void setStrategy (int strategy ); synchronized
// Protected Methods Overriding Object
protected void finalize ( );
}
Passed To
DeflaterOutputStream.DeflaterOutputStream( )Type Of
DeflaterOutputStream.def |
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