JAVA对文件压缩和解压缩的实现

很实用的功能，JAVA对文件进行操作，压缩和解压缩

1.对文件进行压缩

    String[] filenames =new String[]{"c:\\qqq.txt","c:\\www.txt"};
    //new String[]{"c:\\aaa.txt", "c:\\bbb.java"}; 
         
        byte[] buf = new byte[1024]; 
         
        try { 
            String outFilename = "c:\\XXX.zip"; 
            ZipOutputStream out =
    new ZipOutputStream(new FileOutputStream(outFilename)); 
         
            for (int i=0; i<filenames.length; i++) { 
                FileInputStream in = new FileInputStream(filenames[i]); 
         
                out.putNextEntry(new ZipEntry(filenames[i])); 
         
                int len; 
                while ((len = in.read(buf)) > 0) { 
                    out.write(buf, 0, len); 
                } 
         
                out.closeEntry(); 
                in.close(); 
            } 
         
            out.close(); 
        } catch (IOException e) { 
        }

2.下面介绍如何解压缩

    try { 
              String inFilename = "c:\\XXX.zip"); 
              ZipInputStream in =
    new ZipInputStream(new FileInputStream(inFilename)); 
           
    
              ZipFile zf = new ZipFile("c:\\XXX.zip"); 
           
                for (Enumeration entries =
    zf.entries(); entries.hasMoreElements();) 
              { 
                  String zipEntryName =
    ((ZipEntry)entries.nextElement()).getName(); 
    
               ZipEntry entry = in.getNextEntry(); 
            
    
               String outFilename = zipEntryName; 
               OutputStream out = new FileOutputStream(outFilename); 
            
               byte[] buf = new byte[1024]; 
               int len; 
               while ((len = in.read(buf)) > 0) { 
                   out.write(buf, 0, len); 
               } 
            
               // Close the streams 
               out.close(); 
              } 
               
               
              in.close(); 
          } catch (IOException e) { 
          }