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Java > Java SE, EE, ME > java > util > zip > Deflater

java.util.zip
Class Deflater

java.lang.Object
  extended by java.util.zip.Deflater
See Also:
Top Examples, Source Code, Inflater
public static final int BEST_COMPRESSION
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public static final int BEST_SPEED
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public static final int DEFAULT_COMPRESSION
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public static final int DEFAULT_STRATEGY
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public int deflate(byte[] b)
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[876]Compress a file to a bytearray
By Cipson J { dot } C { dot } on 2004/12/08 05:29:04  Rate
    FileInputStream fin = new FileInputStream ( "20.doc" ) ; 
    
     while (  ( readByte =  ( byte ) fin.read (  )  )  != -1 )  {  
       //System.out.println ( readByte ) ; 
       in [ i++ ]  = readByte; 
      }  
     fin.close (  ) ; 
      // compressing the bytes 
      byte [  ]  outputBuff = new byte [ 30000 ] ; 
      Deflater userDeflater = new Deflater (  ) ; 
      userDeflater.setLevel ( Deflater.BEST_COMPRESSION ) ; 
      
      userDeflater.setInput ( in ) ; 
      userDeflater.finish (  ) ; 
      //int datalen = userDeflater.deflate ( output ) ; 
      int datalen = 0; 
       while  ( !userDeflater.finished (  )  )   {  
           datalen = userDeflater.deflate ( outputBuff ) ; 
      }  
 
public int deflate(byte[] b,
                   int off,
                   int len)
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public static final int DEFLATED
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public Deflater()
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[1251]Create the compressor with highest level of compression
By Armic on 2005/01/13 06:52:34  Rate
  /* Create the compressor with highest level of compression 
    * Using the popular ZLIB compression library.*/  
   Deflater compressor = new Deflater (  ) ; 
   compressor.setLevel ( Deflater.BEST_COMPRESSION ) ; 
   
   // Give the compressor the data to compress 
   compressor.setInput ( input ) ; 
   compressor.finish (  ) ; 
  
  
   // Create a byte array to hold the compressed data. 
   // There is no guarantee that the compressed data will be smaller than 
   // the uncompressed data. 
   ByteArrayOutputStream bos = new ByteArrayOutputStream        ( input.length ) ; 
  
  
   // Compress the data 
   byte [  ]  buf = new byte [ 1024 ] ; 
    
   while  ( !compressor.finished (  )  )   {  
     int count = compressor.deflate ( buf ) ; 
     bos.write ( buf, 0, count ) ; 
    }   // end while 
   try  {  
        bos.close (  ) ; 
    }  catch  ( IOException e )   {   }  
      
   // Get the compressed data 
   byte [  ]  compressedData = bos.toByteArray (  ) ; 
        
   try  {  
        FileOutputStream out = new FileOutputStream ( nameOfFile ) ; 
        out.write ( compressedData ) ; 
        
        out.flush (  ) ; 
        out.close (  ) ; 
                
          }  catch ( Exception e )   {   }   
public Deflater(int level)
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public Deflater(int level,
                boolean nowrap)
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public void end()
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public static final int FILTERED
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protected void finalize()
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Object
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public void finish()
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public boolean finished()
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public int getAdler()
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public long getBytesRead()
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public long getBytesWritten()
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public int getTotalIn()
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getBytesRead()
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public int getTotalOut()
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getBytesWritten()
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public static final int HUFFMAN_ONLY
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public boolean needsInput()
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public static final int NO_COMPRESSION
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public void reset()
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public void setDictionary(byte[] b)
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Inflater.getAdler(), Inflater.inflate(byte[], int, int)
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public void setDictionary(byte[] b,
                          int off,
                          int len)
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Inflater.getAdler(), Inflater.inflate(byte[], int, int)
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public void setInput(byte[] b)
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needsInput()
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public void setInput(byte[] b,
                     int off,
                     int len)
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needsInput()
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public void setLevel(int level)
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IllegalArgumentException
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public void setStrategy(int strategy)
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IllegalArgumentException
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