Zipping files in a folder using java.util.zip

Question

hi guys,
does any body has the java code for
zipping files in a folder
hi guys,
actually i want to zip no of files in a folder .the folder can also have sub folder
and after zipping when i extract the files manually i should
maintain the same folder structure
does any body has the code
please reply me soon its a bit urgent

Answer 1

hi smeee
i tried running ur code but its not working
here the command
java c:\abc\ zzz.zip
its saying
no files or directories even though there's the
directory present
what's the solution Hi,
Oops that was because of the error check added at the last moment..
Anyway, You need to use the following command to run it :
java ZipUtility c:\abc c:\zzz.zip
Please use the following corrected code:
     Class to zip file(s).
     Requires jdk1.3.1.
     To run use the following command:
     java ZipUtility <directory or file to be zipped> <name of zip file to be created>
     Please specify absolute path names as its parameters while running this program.
import java.util.zip.*;
import java.io.*;
public class ZipUtility {
     ZipOutputStream cpZipOutputStream = null;
     String strSource = "";
     String strTarget = "";
     String strSubstring = "";
     public static void main(String args[]) {
          if(     args == null || args.length < 2) {
               System.out.println("Usage: java ZipUtility <directory or file to be zipped> <name of zip file to be created>");
               return;
          ZipUtility udZipUtility = new ZipUtility();
          udZipUtility.strSource = args[0];
          udZipUtility.strTarget = args[1];
          udZipUtility.zip();
     private void zip(){
                    try
                         File cpFile = new File (strSource);
                         if (!cpFile.isFile() && !cpFile.isDirectory() ) {
                              System.out.println("\nSource file/directory Not Found!");
                              return;
                         if  (cpFile.isDirectory()) {
                              strSubstring = strSource;;
                         } else {
                              strSubstring = "";
                         cpZipOutputStream = new ZipOutputStream(new FileOutputStream(strTarget));
                         cpZipOutputStream.setLevel(9);
                         zipFiles( cpFile);
                         cpZipOutputStream.finish();
                         cpZipOutputStream.close();
                         System.out.println("\n Finished creating zip file " + strTarget + " from source " + strSource);
                    }catch (Exception e){
                         e.printStackTrace();
     private void  zipFiles(File cpFile) {
               if (cpFile.isDirectory()) {
                    File [] fList = cpFile.listFiles() ;
                    for (int i=0; i< fList.length; i++){
                         zipFiles(fList) ;
               } else {
                    try {
                         String strAbsPath = cpFile.getAbsolutePath();
                         String strZipEntryName ="";
                         if (!strSubstring.equals("") ){
                              strZipEntryName = strAbsPath.substring(strSource.length()+1, strAbsPath.length());
                         } else {
                              strZipEntryName = cpFile.getName();
                         byte[] b = new byte[ (int)(cpFile.length()) ];
                         FileInputStream cpFileInputStream = new FileInputStream (cpFile) ;
                         int i = cpFileInputStream.read(b, 0, (int)cpFile.length());
                         ZipEntry cpZipEntry = new ZipEntry(strZipEntryName);
                         cpZipOutputStream.putNextEntry(cpZipEntry );
                         cpZipOutputStream.write(b, 0, (int)cpFile.length());
                         cpZipOutputStream.closeEntry() ;
                    } catch (Exception e) {
                         e.printStackTrace();