JAVA.UTIL.ZIP.DEFLATEROUTPUTSTREAM-KLASS I JAVA

Java.util.zip.DeflaterInputStream klass i Java Den här klassen implementerar ett utströmsfilter för att komprimera data i komprimeringsformatet "deflate". Den används också som grund för andra typer av komprimeringsfilter som GZIPOutputStream. Konstruktörer och beskrivning

DeflaterOutputStream(OutputStream ut): Skapar en ny utström med en standardkompressor och buffertstorlek. DeflaterOutputStream(OutputStream out boolean syncFlush) : Skapar en ny utström med en standardkompressor, en standardbuffertstorlek och det specificerade spolläget. DeflaterOutputStream(OutputStream out Deflater def) : Skapar en ny utström med den angivna kompressorn och en standardbuffertstorlek. DeflaterOutputStream(OutputStream out Deflater def boolean syncFlush) : Skapar en ny utström med angivet kompressorspolningsläge och en standardbuffertstorlek. DeflaterOutputStream(OutputStream out Deflater def int size): Skapar en ny utström med angiven kompressor och buffertstorlek. DeflaterOutputStream(OutputStream out Deflater def int size boolean syncFlush): Skapar en ny utström med angiven kompressorbuffertstorlek och spolningsläge. Metoder:

  Syntax :  public void close() throws IOException   Overrides:   close in class FilterOutputStream   Throws:   IOException

  Syntax :  protected void deflate() throws IOException   Throws:   IOException

  Syntax :  public void finish() throws IOException   Throws:   IOException

  Syntax :  public void flush() throws IOException   Overrides:   flush in class FilterOutputStream   Throws:   IOException

  Syntax :  public void write(byte[] b int off int len) throws IOException   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

  Syntax :  public void write(int b) throws IOException   Overrides:   write in class FilterOutputStream   Parameters:   b - the byte to be written   Throws:   IOException

Java

    //Java program to demonstrate DeflaterOutputStream   import     java.io.FileInputStream  ;   import     java.io.FileOutputStream  ;   import     java.io.IOException  ;   import     java.util.zip.DeflaterOutputStream  ;   class   DeflaterOutputStreamDemo   {      public     static     void     main  (  String  []     args  )     throws     IOException         {      FileOutputStream     fos     =     new     FileOutputStream  (  'file2.txt'  );      //Assign FileOutputStream to DeflaterOutputStream      DeflaterOutputStream     dos     =     new     DeflaterOutputStream  (  fos  );      //write it into DeflaterOutputStream      for     (  int     i     =     0  ;     i      <  10     ;     i  ++  )         {      dos  .  write  (  i  );      }          //illustrating flush() method()      dos  .  flush  ();          //illustrating finish()      //Finishes writing compressed data to the output stream      // without closing the underlying stream      dos  .  finish  ();          //fos is not closed      //writing some data on file      fos  .  write  (  'G'  );          //Writes remaining compressed data to the output stream      // closes the underlying stream.      dos  .  close  ();      }   }