Me ajuda com Compactaçao de dados

package compactaçao;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.Deflater;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
/**

/**
 *
 * @author guilherme
 */
public class Compacta {
      static final int BUFFER = 2048;

       // TODO code application logic here
    public void compacta()
    {
            System.out.println("Exemplo de criaçao de arquivos ZIP");
      //arquivos a serem zipados (crie estes arquivos na pasta onde voce vai colocar este codigo-fonte)
      String[] filesZip = new String[3];
       filesZip[0] = "primeiro.txt";
       filesZip[1] = "segundo.txt";
       filesZip[2] = "terceiro.txt";

     byte[] buffer = new byte[18024];
    //nome do arquivo zip

     String zipFileName ="c:\\example.zip";

     try{
        ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFileName));
        // ajusta modo de compressão
       out.setLevel(Deflater.DEFAULT_COMPRESSION);
       //faz a iteração sobre os arquivos ,adicionando-os arquivos ZIP
      for(int i = 0;i < filesZip.length;i++)
      {
        System.out.println(i);
       FileInputStream in = new FileInputStream(filesZip[i]);
       //adicionar zip no output strean
       out.putNextEntry(new ZipEntry(filesZip[i]));
       //transfer bytes from the current file to the zip file
       int len;
        while((len = in.read())> 0)
        {
            out.write(buffer,0,len);
        }
      // fecha o current
       out.closeEntry();
       //fecha o input stream

      }
       out.close();
     }
    catch(IllegalArgumentException r)
    {
        r.printStackTrace();
    }
    catch(FileNotFoundException r)
    {
        r.printStackTrace();
    }
    catch(IOException r)
    {
        r.printStackTrace();
    }
    }
   public void desconpacta()
   {

      try
     {
        System.out.println("Example of ZIP file decompression.");

       // Specify file to decompress
       String inFileName = "c:\\example.zip";
       // Specify destination where file will be unzipped
       String destinationDirectory = "c:\\temp\\";

       File sourceZipFile = new File(inFileName);
       File unzipDestinationDirectory = new File(destinationDirectory);

       // Open Zip file for reading
       ZipFile zipFile = new ZipFile(sourceZipFile, ZipFile.OPEN_READ);

       // Create an enumeration of the entries in the zip file
       Enumeration zipFileEntries = zipFile.entries();

       // Process each entry
       while (zipFileEntries.hasMoreElements())
       {
         // grab a zip file entry
         ZipEntry entry = (ZipEntry) zipFileEntries.nextElement();

         String currentEntry = entry.getName();
         System.out.println("Extracting: " + entry);

         File destFile =
           new File(unzipDestinationDirectory, currentEntry);

         // grab file's parent directory structure
         File destinationParent = destFile.getParentFile();

         // create the parent directory structure if needed
         destinationParent.mkdirs();

         // extract file if not a directory
         if (!entry.isDirectory())
         {
           BufferedInputStream is =
             new BufferedInputStream(zipFile.getInputStream(entry));
           int currentByte;
           // establish buffer for writing file
           byte data[] = new byte[BUFFER];

           // write the current file to disk
           FileOutputStream fos = new FileOutputStream(destFile);
           BufferedOutputStream dest =
           new BufferedOutputStream(fos, BUFFER);

           // read and write until last byte is encountered
           while ((currentByte = is.read(data, 0, BUFFER)) != -1)
           {
             dest.write(data, 0, currentByte);
           }
           dest.flush();
           dest.close();
           is.close();
         }
       }
       zipFile.close();
     }
     catch (IOException ioe)
     {
     ioe.printStackTrace();
     }

   }



}