Click here to Skip to main content
Click here to Skip to main content

Zip and Unzip from a C# program using J# runtime

, 25 Apr 2004
Rate this:
Please Sign up or sign in to vote.
Zip and Unzip from a C# program using java.util.zip

Introduction

There are a lot of libraries to work with zip files. I found a very easy way to work with zip files from a C# program. The Microsoft .Net Framework 1.1 comes with new language: J#. Let's look at it a little. For sure, Java is a parent of it; if so, java.util.zip is somewhere here! I spent a few minutes and found it in vjslib.dll. Let's do the work. Start a new C# project and select Windows Application. Our goal is something like that:

All we need to do is: add reference to our project:

Now, we can use it:

// Output stream 
java.io.FileOutputStream fos = new java.io.FileOutputStream(zipFileName); 

// Tie to zip stream 
java.util.zip.ZipOutputStream zos = new java.util.zip.ZipOutputStream(fos); 

// Stream with source file 
java.io.FileInputStream fis = new java.io.FileInputStream(sourceFile); 

// It's our entry in zip 
java.util.zip.ZipEntry ze = new java.util.zip.ZipEntry(sourceFile); 

zos.putNextEntry(ze); 
sbyte[] buffer = new sbyte[1024]; 
int len; 

// Read and write until done 
while((len = fis.read(buffer)) >= 0) 
{ 
    zos.write(buffer, 0, len); 
}
 
// Close everything 
zos.closeEntry(); 
fis.close(); 
zos.close(); 
fos.close(); 

Conclusion

That's all! Demo application is included.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Share

About the Author

Valeri Makarov
Software Developer
Russian Federation Russian Federation
Over 12 years of experience as a Software Developer/Engineer, development and production support applications for MS DOS, MS Windows.
Certified C Programmer
Certified C++ Programmer
Certified Visual FoxPro Programmer
Certified C# Programmer

Comments and Discussions

 
GeneralRe: Able to zip directories and their contents Pinmemberobinna_eke30-May-06 1:29 
GeneralRe: Able to zip directories and their contents Pinmembersanjayg1233-Mar-07 21:59 
GeneralZipping folders and their subdirectories Pinsussnicholaskey12-Aug-05 17:39 
GeneralRe: Zipping folders and their subdirectories Pinmembernicholaskeytholeong12-Aug-05 17:42 
GeneralThank You PinmemberSeth O'Neal6-May-05 7:37 
GeneralThere is a bug in those classes PinstaffNishant S9-May-04 3:56 
GeneralRe: There is a bug in those classes PinmemberValeri9-May-04 4:28 
GeneralRe: There is a bug in those classes PinstaffNishant S9-May-04 4:30 
Valeri wrote:
Poor program from http://msdn.microsoft.com/msdnmag/issues/03/06/ZipCompression/ sometimes dead when adding file!
 
It's not the program really, but the classes it uses. The java.util.zip classes don't work properly. In fact I just found some more info that even the date/time is not stored properly.
 
Nish
 

Now with my own blog - void Nish(char* szBlog);
 
My MVP tips, tricks and essays web site - www.voidnish.com
 

Request - Could everyone who have in the past, posted on my personal forum on CP, be kind enough to delete all your posts please? I intend to start a personal non-technical blog there, now that it is RSSd and would very much like to empty the forum before I do so - because the posts that are there as of now are mostly test posts and posts that were made before we all knew it was a blog Smile | :)


GeneralRe: There is a bug in those classes Pinmembercmhasan29-Nov-04 5:25 
GeneralThis actually has a problem. Pinmemberudaan20033-May-04 5:46 
GeneralRe: This actually has a problem. PinmemberValeri3-May-04 7:02 
GeneralRe: This actually has a problem. Pinmemberudaan20034-May-04 5:58 
GeneralRe: This actually has a problem. PinmemberValeri4-May-04 7:00 
GeneralThis has been covered in a fair bit of detail in another article... PinmemberDuncanma25-Apr-04 22:22 
GeneralRe: This has been covered in a fair bit of detail in another article... PinmemberValeri25-Apr-04 22:45 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.

| Advertise | Privacy | Mobile
Web01 | 2.8.140827.1 | Last Updated 26 Apr 2004
Article Copyright 2004 by Valeri Makarov
Everything else Copyright © CodeProject, 1999-2014
Terms of Service
Layout: fixed | fluid