java关于神奇Zip压缩文件

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package com;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

/**
*
* @author ly(关于Zip压缩文件)
*
*/
public class Sample {
public void zip(String zipname,File file){
  try {
   ZipOutputStream out=new ZipOutputStream(new FileOutputStream(zipname));
      myzip(out, file,"");
      System.out.println("文件压缩中...");
      out.close();
  } catch (FileNotFoundException e) {
   e.printStackTrace();
  } catch (IOException e) {
   e.printStackTrace();
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
}

private void myzip(ZipOutputStream out, File f, String base) throws Exception {
            if(f.isDirectory()){
            File [] f1=f.listFiles();
     out.putNextEntry(new ZipEntry(base+"/"));
     for(int i=0;i<f1.length;i++){
     myzip(out, f1[i], base+f1[i]);
     }
            }
            else{
    out.putNextEntry(new ZipEntry(base));
       FileInputStream in=new FileInputStream(f);
       int j;
       System.out.println(base);
       while((j=in.read())!=-1){
       out.write(j);
       }
       in.close();
            }
}

public static void main(String args[]) {
          Sample s=new Sample();
          s.zip("d:/b.zip", new File("d:/a"));
          System.out.println("文件压缩完成");
}
}