Java.util.zip A class that creates and reads a ZIP file

Write a class that creates and reads a ZIP file with java.util.zip

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Recently used a lot of recursive calls! Have a short summary!

/**


Testzip.java


coding by Serol Luo.


rollingpig@163.com


2003/07/03


http://www.chinaunix.net/forum/viewforum.php?f=26


Reprint Please keep this information


*/


import java.util.*;


import java.util.zip.*;


import java.io.*;


class Testzip


{


public void Zip (String zipfilename,string inputfile) throws exception{


Zip (zipfilename,new File (inputfile));


}


public void Zip (String zipfilename,file inputfile) throws exception{


zipoutputstream out=new Zipoutputstream (New FileOutputStream (Zipfilename));


Zip (Out,inputfile, "");


System.out.println ("Zip done");


Out.close ();


}


public void Unzip (String zipfilename,string outputdirectory) throws exception{


zipinputstream in=new Zipinputstream (New FileInputStream (Zipfilename));


ZipEntry Z;


while ((Z=in.getnextentry ())!= null)


{


System.out.println ("unziping" +z.getname ());


if (z.isdirectory ())


{


String name=z.getname ();


name=name.substring (0,name.length ()-1);


file F=new file (outputdirectory+file.separator+name);


F.mkdir ();


System.out.println ("mkdir" +outputdirectory+file.separator+name);


}


else{


file F=new file (Outputdirectory+file.separator+z.getname ());


F.createnewfile ();


FileOutputStream out=new FileOutputStream (f);


int b;


while ((B=in.read ())!=-1)


Out.write (b);


Out.close ();


}


}


In.close ();


}


public void Zip (Zipoutputstream out,file f,string base) throws exception{


System.out.println ("Zipping" +f.getname ());


if (f.isdirectory ())


{


file[] Fl=f.listfiles ();


Out.putnextentry (New ZipEntry (base+ "/"));


base=base.length () ==0? ": base+"/";


for (int i=0;i<fl.length; i++)


{


Zip (Out,fl[i],base+fl[i].getname ());


}


}


Else


{


Out.putnextentry (new ZipEntry (base));


FileInputStream in=new FileInputStream (f);


int b;


while ((B=in.read ())!=-1)


Out.write (b);


In.close ();


}


}


public static void Main (string[] args)


{


try{


testzip t=new testzip ();


t.zip ("C:\\test.zip", "c:\\test");


t.unzip ("C:\\test.zip", "C:\\test2");


}


catch (Exception e) {e.printstacktrace (System.out);}


}


}