I tried this already:

FileOutputStream filOpStrm = new FileOutputStream(zipFileName,true)

The file is overwritten anyhow.



>>I'm modifying the code in the Zip method here http://www.codeproject.com/KB/cs/unzipC_usingJ_.aspx
>>
>>This code creates the ZIP file:
>>

FileOutputStream filOpStrm = new FileOutputStream(zipFileName);

>>
>>If the file already exists, I want to add to it. How do I get a reference to the
>>file without recreating it?
>

FileOutputStream filOpStrm = new FileOutputStream(zipFileName,true)

>But that looks like you'd be concatenating ZIP files and I don't think it will work.
>
>HTH,Viv