Listing the Contents of a ZIP File 

 
 try {
     ZipFile zf = new ZipFile(filename);
      
       for (Enumeration entries = zf.entries();
         entries.hasMoreElements();) {
           //The next three lines should be in one 
             //line
           process(
             ((ZipEntry)entries.nextElement())
               .getName());
       }
 
 } catch (IOException e) {
 }