Как разархивировать ZIP?

import java.io.*;
import java.util.*;
import java.util.zip.*;
 
public class zipu {
   static final int BUFFER = 2048;
   public static void main (String argv[]) {
      try {
         final int BUFFER = 2048;
         BufferedOutputStream dest = null;
         FileInputStream fis = new FileInputStream(argv[0]);
         CheckedInputStream checksum = new CheckedInputStream(fis, new Adler32());
         ZipInputStream zis = new ZipInputStream(new BufferedInputStream(checksum));
         ZipEntry entry;
         while((entry = zis.getNextEntry()) != null) {
            System.out.println('Extracting: ' +entry);
            int count;
            byte data[] = new byte[BUFFER];
            // write the files to the disk
            FileOutputStream fos = new FileOutputStream(entry.getName());
            dest = new BufferedOutputStream(fos, BUFFER);
            while ((count = zis.read(data, 0, BUFFER)) != -1) {
               dest.write(data, 0, count);
            }
            dest.flush();
            dest.close();
         }
         zis.close();
         System.out.println('Checksum: '+checksum.getChecksum().getValue());
      } catch(Exception e) {
         e.printStackTrace();
      }
  }
}

URL url = new URL ('jar:[url]http://www.server2.com/path2/applet.jar!/dir/aaa.properties');[/url]
 JarURLConnection jarConnection = (JarURLConnection)url.openConnection();
props.load(jarConnection.getJarFile().getInputStream(jarConnection.getJarEntry()));